Bug 189861

Summary: CPU Frequency way below hardware limits after resume (i7-6560U, Dell XPS 13 9350)
Product: Power Management Reporter: Victor Trac (victor.trac)
Component: intel_pstateAssignee: Chen Yu (yu.c.chen)
Status: CLOSED PATCH_ALREADY_AVAILABLE    
Severity: normal CC: bwat47, dsmythies, frangio.1, olaf.the.lost.viking+kernel, pachoramos1, rui.zhang, tengel, victor.trac
Priority: P1    
Hardware: All   
OS: Linux   
See Also: https://bugzilla.kernel.org/show_bug.cgi?id=90041
Kernel Version: 4.9.0-1-drm-intel-nightly (2016-12-02) Subsystem:
Regression: No Bisected commit-id:
Attachments: dmesg output
[Updated] Disable tstate after resumed

Description Victor Trac 2016-12-08 16:52:43 UTC
After a resume, my CPU on my i7-6560U gets so throttled that it becomes almost unusable, ranging from 90mhz to ~300mhz, which is below the lower limit:

$ sudo cpupower frequency-info
analyzing CPU 0:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: 400 MHz - 3.20 GHz
  available cpufreq governors: performance powersave
  current policy: frequency should be within 400 MHz and 3.20 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
  current CPU frequency: 265 MHz (asserted by call to hardware)
  boost state support:
    Supported: yes
    Active: yes

I found this thread: https://bbs.archlinux.org/viewtopic.php?id=199922, which suggested using "wrmsr -a 0x19a 0x0". This seems to fix it temporarily, but soon immediately it starts happening again:

$ while true; do sudo wrmsr -a 0x19a 0x0 && sleep 1 && sudo rdmsr -a 0x19a; sleep 1; done
1c
1c
1c
1c
1e
1e
1e
1e
1a
1a
1a
1a
1c
1c
1c
1c
1e
1e
1e
1e
1a
1a
1a
1a
1c
1c
1c
1c
18
18
18
18
0
0
0
0
0
0

If I run the wrmsr in a tight loop like "$ while true; do sudo wrmsr -a 0x19a 0x0 && sleep .1; done", then my system is ususable. 

I've also noticed that if I go to my BIOS and disable Speedstep, the problem goes away entirely. However, my CPU is then limited to a max of 2.2Ghz instead of the Turbo speed of 3.1Ghz.

There doesn't seem to be anything interesting or related in my dmesg output. My kernel boot params look like this:
$ cat arch-drm-nightly.conf 
title Arch Linux Intel DRM Nightly
linux /vmlinuz-linux-drm-intel-nightly
initrd /intel-ucode.img
initrd /initramfs-linux-drm-intel-nightly.img
options rd.luks.uuid=8b6f7696-53e9-405e-aab6-11d58279e278 rd.luks.options=discard rd.lvm.lv=lvm/root rd.lvm.lv=lvm/swap resume=UUID=1134ceaa-868d-467a-ae77-ce50cea4ee0c root=UUID=74e33803-e02a-4bef-846e-90877bd51dce rw net.ifnames=0 

I'm on the latest Dell 1.4.10 BIOS. Also, FWIW, I was previously running a drm-intel-nightly that I built in early November, which IIRC, may not have had this problem, but all previous drm-intel-nightly kernels did show this problem. For the 2-3 week period that I ran the early November nightly, I don't recall seeing this issue, but perahps it was just luck.
Comment 1 OlafLostViking 2016-12-08 17:34:18 UTC
I experience the same problem (900MHz) with a Dell Latitude E6430 with BIOS A18.

$  sudo dmidecode | grep -A3 "BIOS Information"
BIOS Information
        Vendor: Dell Inc.
        Version: A18
        Release Date: 01/18/2016

$ sudo cpupower frequency-info
analyzing CPU 0:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: 1.20 GHz - 3.70 GHz
  available cpufreq governors: performance powersave
  current policy: frequency should be within 1.20 GHz and 3.70 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
  current CPU frequency: 900 MHz (asserted by call to hardware)
  boost state support:
    Supported: yes
    Active: yes
    3500 MHz max turbo 4 active cores
    3500 MHz max turbo 3 active cores
    3600 MHz max turbo 2 active cores
    3700 MHz max turbo 1 active cores
Comment 2 OlafLostViking 2016-12-08 17:34:51 UTC
Sorry:

$ uname -a
Linux taris 4.8.11-1-ARCH #1 SMP PREEMPT Sun Nov 27 09:26:14 CET 2016 x86_64 GNU/Linux
Comment 3 Zhang Rui 2016-12-12 03:48:31 UTC
please check if this debug patch helps or not
https://patchwork.kernel.org/patch/9428081/
Comment 4 Chen Yu 2016-12-12 03:58:24 UTC
(In reply to Zhang Rui from comment #3)
> please check if this debug patch helps or not
> https://patchwork.kernel.org/patch/9428081/

Yes. it seems to be a common issue in Dell's product.
Comment 5 Chen Yu 2016-12-12 04:00:19 UTC
please refer to latest patch at 
https://bugzilla.kernel.org/attachment.cgi?id=246371
which is verified to work at
https://bugzilla.kernel.org/show_bug.cgi?id=90041
Comment 6 Victor Trac 2017-01-04 20:25:58 UTC
Created attachment 250271 [details]
dmesg output

@Chen:

I installed the patch from https://bugzilla.kernel.org/show_bug.cgi?id=90041 onto drm-intel-nightly from 2017-01-03:

uname -a:
Linux callisto 4.10.0-1-drm-intel-nightly #24 SMP PREEMPT Tue Jan 3 21:06:22 CST 2017 x86_64 GNU/Linux

Everything seemed to work fine until I put my machine to sleep and tried to resume.  I had a ton of errors in my dmesg output and my usb-c dock no longer worked properly. DisplayPort over usb-c worked fine, but usb devices connected to my dock no longer worked. See attachment.  (The last few lines about the usb HID devices came up when I plugged my USB keyboard/mouse adapter directly into my laptop instead of via the usb-c dock).
Comment 7 Chen Yu 2017-04-28 07:23:04 UTC
(In reply to Victor Trac from comment #6)
> Created attachment 250271 [details]
> dmesg output
> 
> @Chen:
> 
> I installed the patch from https://bugzilla.kernel.org/show_bug.cgi?id=90041
> onto drm-intel-nightly from 2017-01-03:
> 
> uname -a:
> Linux callisto 4.10.0-1-drm-intel-nightly #24 SMP PREEMPT Tue Jan 3 21:06:22
> CST 2017 x86_64 GNU/Linux
> 
> Everything seemed to work fine until I put my machine to sleep and tried to
> resume.  I had a ton of errors in my dmesg output and my usb-c dock no
> longer worked properly. DisplayPort over usb-c worked fine, but usb devices
> connected to my dock no longer worked. See attachment.  (The last few lines
> about the usb HID devices came up when I plugged my USB keyboard/mouse
> adapter directly into my laptop instead of via the usb-c dock).

This seems to be a usb related issue.

But anyway the lastest patch for the cpu throttling fix is at
https://patchwork.kernel.org/patch/9629003/
would you please help take a try on latest upstream kernel?
Comment 8 Chen Yu 2017-05-26 03:27:32 UTC
@Victor
Comment 9 Victor Trac 2017-05-29 15:54:45 UTC
@Chen The latest upstream intel-drm kernel fails patching:

patching file drivers/acpi/processor_throttling.c
Hunk #2 FAILED at 65.
1 out of 6 hunks FAILED -- saving rejects to file drivers/acpi/processor_throttling.c.rej


$ cat ./src/drm-intel/drivers/acpi/processor_throttling.c.rej
--- drivers/acpi/processor_throttling.c
+++ drivers/acpi/processor_throttling.c
@@ -65,6 +66,8 @@ struct acpi_processor_throttling_arg {
 static int acpi_processor_get_throttling(struct acpi_processor *pr);
 int acpi_processor_set_throttling(struct acpi_processor *pr,
 						int state, bool force);
+static void throttling_msr_reevaluate(int cpu);
+static void acpi_throttling_init_ops(void);
 
 static int acpi_processor_update_tsd_coord(void)
 {
Comment 10 Chen Yu 2017-08-14 04:33:24 UTC
Created attachment 257911 [details]
[Updated] Disable tstate after resumed

Please help check if this patch works for you.
Comment 11 Doug Smythies 2017-08-21 21:42:27 UTC
@Chen : I believe that pending changes to the intel-pstate CPU frequency scaling driver, proposed by Rafael, I think for kernel 4.14-rc1, will eliminate the ongoing troubles with Clock Modulation and the driver.

I'm saying that the issue will no longer exist, and that the intel_pstate CPU frequency scaling driver will respond "properly" to Clock Modulation events. Of course, I'll check when kernel 4.14-rc1 becomes available, or before if I can apply all the patches.

For reference see the patch set related to:

[PATCH 0/2] cpufreq: intel_pstate: Eliminate the PID controller
2017.07.24 03:22 (or 10:22 UTC, I think)

https://marc.info/?l=linux-pm&m=150093486908759&w=2
https://marc.info/?l=linux-pm&m=150093484308751&w=2
https://marc.info/?l=linux-pm&m=150093486808758&w=2
Comment 12 Chen Yu 2017-09-04 08:04:31 UTC
(In reply to Doug Smythies from comment #11)
> @Chen : I believe that pending changes to the intel-pstate CPU frequency
> scaling driver, proposed by Rafael, I think for kernel 4.14-rc1, will
> eliminate the ongoing troubles with Clock Modulation and the driver.
> 
> I'm saying that the issue will no longer exist, and that the intel_pstate
> CPU frequency scaling driver will respond "properly" to Clock Modulation
> events. Of course, I'll check when kernel 4.14-rc1 becomes available, or
> before if I can apply all the patches.
> 
> For reference see the patch set related to:
> 
> [PATCH 0/2] cpufreq: intel_pstate: Eliminate the PID controller
> 2017.07.24 03:22 (or 10:22 UTC, I think)
> 
> https://marc.info/?l=linux-pm&m=150093486908759&w=2
> https://marc.info/?l=linux-pm&m=150093484308751&w=2
> https://marc.info/?l=linux-pm&m=150093486808758&w=2

Hi Doug,
According to our discussion in the mailing list, I agree that Victor's issue should be fixed either by Rafael's patch or by this series:

https://patchwork.kernel.org/patch/9922469/
https://patchwork.kernel.org/patch/9922475/
Comment 13 Brandon Watkins 2017-12-12 02:14:16 UTC
What kernel is this supposed to be included in? I'm on an xps 9360 and still see the cpu stuck at min frequency after resume on 4.14.4...
Comment 14 Chen Yu 2017-12-12 02:54:49 UTC
(In reply to Brandon Watkins from comment #13)
> What kernel is this supposed to be included in? I'm on an xps 9360 and still
> see the cpu stuck at min frequency after resume on 4.14.4...
The patch was dropped...
Humm, I have a xps 9360 in hand, could you please provide the dmidecode log on your platform?
Comment 15 Brandon Watkins 2017-12-12 02:59:07 UTC
dmidecode is below. Unfortunately I'm not able to re-create it reliably, it seems to happen at random on resuming from suspend. All had seemed well for the past few days with kernel 4.14, but earlier today I resumed my machine, noticed everything had slowed to a crawl and cpupower frequency-info showed the frequency stuck between 300-400mhz (below the 400mhz limit). After rebooting, I've tried suspending/resuming multiple times and haven't been able to trigger it again (so far)


DMIdecode:


# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Table at 0x000E0000.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
	Vendor: Dell Inc.
	Version: 2.3.1
	Release Date: 10/03/2017
	Address: 0xF0000
	Runtime Size: 64 kB
	ROM Size: 16384 kB
	Characteristics:
		PCI is supported
		PNP is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		EDD is supported
		Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
		5.25"/1.2 MB floppy services are supported (int 13h)
		3.5"/720 kB floppy services are supported (int 13h)
		3.5"/2.88 MB floppy services are supported (int 13h)
		Print screen service is supported (int 5h)
		8042 keyboard services are supported (int 9h)
		Serial services are supported (int 14h)
		Printer services are supported (int 17h)
		ACPI is supported
		USB legacy is supported
		Smart battery is supported
		BIOS boot specification is supported
		Function key-initiated network boot is supported
		Targeted content distribution is supported
		UEFI is supported
	BIOS Revision: 2.3

Handle 0x0001, DMI type 1, 27 bytes
System Information
	Manufacturer: Dell Inc.
	Product Name: XPS 13 9360
	Version: Not Specified
	Serial Number: 2RHFWF2
	UUID: 4C4C4544-0052-4810-8046-B2C04F574632
	Wake-up Type: Power Switch
	SKU Number: 075B
	Family: XPS

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
	Manufacturer: Dell Inc.
	Product Name: 0JGD96
	Version: A00
	Serial Number: /2RHFWF2/CN129637270042/
	Asset Tag: Not Specified
	Features:
		Board is a hosting board
		Board is replaceable
	Location In Chassis: Not Specified
	Chassis Handle: 0x0003
	Type: Motherboard
	Contained Object Handles: 0

Handle 0x0003, DMI type 3, 22 bytes
Chassis Information
	Manufacturer: Dell Inc.
	Type: Laptop
	Lock: Not Present
	Version: Not Specified
	Serial Number: 2RHFWF2
	Asset Tag: Not Specified
	Boot-up State: Safe
	Power Supply State: Safe
	Thermal State: Safe
	Security Status: None
	OEM Information: 0x00000000
	Height: Unspecified
	Number Of Power Cords: 1
	Contained Elements: 0
	SKU Number: Laptop

Handle 0x0004, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JUSB1
	Internal Connector Type: None
	External Reference Designator: USB1
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0005, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JUSB2
	Internal Connector Type: None
	External Reference Designator: USB2
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0006, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JSD1
	Internal Connector Type: None
	External Reference Designator: Cardreader
	External Connector Type: Other
	Port Type: None

Handle 0x0007, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JHP1
	Internal Connector Type: None
	External Reference Designator: Audio Jack
	External Connector Type: Mini Jack (headphones)
	Port Type: Audio Port

Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JTypeC
	Internal Connector Type: None
	External Reference Designator: USB3
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JeDP1 - eDP
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JNGFF1 - WLAN/BT/Wigig CONN
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x000B, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JNGFF2 - HDD
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JKBTP1 - Keyboard
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Keyboard Port

Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JFAN1 - CPU FAN
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x000E, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JSPK1 - Speaker
	Internal Connector Type: Mini Jack (headphones)
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Audio Port

Handle 0x000F, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JXDP1 - CPU XDP Port
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0010, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JAPS1 - Automatic Power
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0011, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JLPDE1 - 80 PORT
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0012, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JDEG1 - Debug PORT
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0013, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: JRTC1 - RTC
	Internal Connector Type: None
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0014, DMI type 9, 17 bytes
System Slot Information
	Designation: J6B2
	Type: x16 PCI Express
	Current Usage: Available
	Length: Long
	ID: 0
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:01.0

Handle 0x0015, DMI type 9, 17 bytes
System Slot Information
	Designation: J6B1
	Type: x1 PCI Express
	Current Usage: Available
	Length: Short
	ID: 1
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:1c.3

Handle 0x0016, DMI type 9, 17 bytes
System Slot Information
	Designation: J6D1
	Type: x1 PCI Express
	Current Usage: Available
	Length: Short
	ID: 2
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:1c.4

Handle 0x0017, DMI type 9, 17 bytes
System Slot Information
	Designation: J7B1
	Type: x1 PCI Express
	Current Usage: Available
	Length: Short
	ID: 3
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:1c.5

Handle 0x0018, DMI type 9, 17 bytes
System Slot Information
	Designation: J8B4
	Type: x1 PCI Express
	Current Usage: In Use
	Length: Short
	ID: 4
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:1c.6

Handle 0x0019, DMI type 9, 17 bytes
System Slot Information
	Designation: J8D1
	Type: x1 PCI Express
	Current Usage: In Use
	Length: Short
	ID: 5
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:1c.7

Handle 0x001A, DMI type 9, 17 bytes
System Slot Information
	Designation: J8D2
	Type: x1 PCI Express
	Current Usage: Available
	Length: Short
	ID: 6
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:1d.0

Handle 0x001B, DMI type 9, 17 bytes
System Slot Information
	Designation: J8B3
	Type: 32-bit PCI
	Current Usage: Available
	Length: Short
	ID: 7
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:1e.0

Handle 0x001C, DMI type 10, 6 bytes
On Board Device Information
	Type: Video
	Status: Enabled
	Description: "Intel HD Graphics"

Handle 0x001D, DMI type 11, 5 bytes
OEM Strings
	String 1: Dell System
	String 2: 1[075B]
	String 3: 3[1.0]
	String 4: 12[www.dell.com]
	String 5: 14[1]
	String 6: 15[0]
	String 7: 27[6015446750]

Handle 0x001E, DMI type 12, 5 bytes
System Configuration Options
	Option 1: Default string

Handle 0x001F, DMI type 15, 35 bytes
System Event Log
	Area Length: 4 bytes
	Header Start Offset: 0x0000
	Header Length: 2 bytes
	Data Start Offset: 0x0002
	Access Method: Indexed I/O, one 16-bit index port, one 8-bit data port
	Access Address: Index 0x046A, Data 0x046C
	Status: Invalid, Not Full
	Change Token: 0x00000000
	Header Format: No Header
	Supported Log Type Descriptors: 6
	Descriptor 1: End of log
	Data Format 1: OEM-specific
	Descriptor 2: End of log
	Data Format 2: OEM-specific
	Descriptor 3: End of log
	Data Format 3: OEM-specific
	Descriptor 4: End of log
	Data Format 4: OEM-specific
	Descriptor 5: End of log
	Data Format 5: OEM-specific
	Descriptor 6: End of log
	Data Format 6: OEM-specific

Handle 0x0020, DMI type 21, 7 bytes
Built-in Pointing Device
	Type: Touch Pad
	Interface: Bus Mouse
	Buttons: 2

Handle 0x0025, DMI type 25, 9 bytes
	System Power Controls
	Next Scheduled Power-on: *-* 00:00:00

Handle 0x0026, DMI type 32, 20 bytes
System Boot Information
	Status: No errors detected

Handle 0x0027, DMI type 34, 11 bytes
Management Device
	Description: LM78-1
	Type: LM78
	Address: 0x00000000
	Address Type: I/O Port

Handle 0x0029, DMI type 36, 16 bytes
Management Device Threshold Data
	Lower Non-critical Threshold: 1
	Upper Non-critical Threshold: 2
	Lower Critical Threshold: 3
	Upper Critical Threshold: 4
	Lower Non-recoverable Threshold: 5
	Upper Non-recoverable Threshold: 6

Handle 0x002B, DMI type 36, 16 bytes
Management Device Threshold Data
	Lower Non-critical Threshold: 1
	Upper Non-critical Threshold: 2
	Lower Critical Threshold: 3
	Upper Critical Threshold: 4
	Lower Non-recoverable Threshold: 5
	Upper Non-recoverable Threshold: 6

Handle 0x002D, DMI type 36, 16 bytes
Management Device Threshold Data

Handle 0x0033, DMI type 41, 11 bytes
Onboard Device
	Reference Designation:  Onboard IGD
	Type: Video
	Status: Enabled
	Type Instance: 1
	Bus Address: 0000:00:02.0

Handle 0x0034, DMI type 41, 11 bytes
Onboard Device
	Reference Designation:  Onboard LAN
	Type: Ethernet
	Status: Enabled
	Type Instance: 1
	Bus Address: 0000:00:19.0

Handle 0x0035, DMI type 41, 11 bytes
Onboard Device
	Reference Designation:  Onboard 1394
	Type: Other
	Status: Enabled
	Type Instance: 1
	Bus Address: 0000:03:1c.2

Handle 0x0036, DMI type 248, 9 bytes
OEM-specific Type
	Header and Data:
		F8 09 36 00 00 00 00 00 01
	Strings:
		BDF_RV_0520

Handle 0x0037, DMI type 255, 8 bytes
OEM-specific Type
	Header and Data:
		FF 08 37 00 01 02 00 00
	Strings:
		_SIDDHaU7MqPiVIV
		075B
		_SIDAvf90w7wKZiZ
		DELL

Handle 0x0038, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 8 GB
	Error Information Handle: Not Provided
	Number Of Devices: 2

Handle 0x0039, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x0038
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 4096 MB
	Form Factor: Row Of Chips
	Set: None
	Locator: System Board Memory
	Bank Locator: Not Specified
	Type: LPDDR3
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 1867 MHz
	Manufacturer: Micron
	Serial Number: Not Specified
	Asset Tag: Not Specified
	Part Number: MT52L512M32D2PF-10
	Rank: 2
	Configured Clock Speed: 1867 MHz
	Minimum Voltage: 1.25 V
	Maximum Voltage: 1.25 V
	Configured Voltage: 1.2 V

Handle 0x003A, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x0038
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 4096 MB
	Form Factor: Row Of Chips
	Set: None
	Locator: System Board Memory
	Bank Locator: Not Specified
	Type: LPDDR3
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 1867 MHz
	Manufacturer: Micron
	Serial Number: Not Specified
	Asset Tag: Not Specified
	Part Number: MT52L512M32D2PF-10
	Rank: 2
	Configured Clock Speed: 1867 MHz
	Minimum Voltage: 1.25 V
	Maximum Voltage: 1.25 V
	Configured Voltage: 1.2 V

Handle 0x003B, DMI type 19, 31 bytes
Memory Array Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x001FFFFFFFF
	Range Size: 8 GB
	Physical Array Handle: 0x0038
	Partition Width: 2

Handle 0x003C, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L1 Cache
	Configuration: Enabled, Not Socketed, Level 1
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 128 kB
	Maximum Size: 128 kB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Parity
	System Type: Unified
	Associativity: 8-way Set-associative

Handle 0x003D, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L2 Cache
	Configuration: Enabled, Not Socketed, Level 2
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 512 kB
	Maximum Size: 512 kB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Unified
	Associativity: 4-way Set-associative

Handle 0x003E, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L3 Cache
	Configuration: Enabled, Not Socketed, Level 3
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 3072 kB
	Maximum Size: 3072 kB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Multi-bit ECC
	System Type: Unified
	Associativity: 12-way Set-associative

Handle 0x003F, DMI type 4, 48 bytes
Processor Information
	Socket Designation: U3E1
	Type: Central Processor
	Family: Core i5
	Manufacturer: Intel(R) Corporation
	ID: E9 06 08 00 FF FB EB BF
	Signature: Type 0, Family 6, Model 142, Stepping 9
	Flags:
		FPU (Floating-point unit on-chip)
		VME (Virtual mode extension)
		DE (Debugging extension)
		PSE (Page size extension)
		TSC (Time stamp counter)
		MSR (Model specific registers)
		PAE (Physical address extension)
		MCE (Machine check exception)
		CX8 (CMPXCHG8 instruction supported)
		APIC (On-chip APIC hardware supported)
		SEP (Fast system call)
		MTRR (Memory type range registers)
		PGE (Page global enable)
		MCA (Machine check architecture)
		CMOV (Conditional move instruction supported)
		PAT (Page attribute table)
		PSE-36 (36-bit page size extension)
		CLFSH (CLFLUSH instruction supported)
		DS (Debug store)
		ACPI (ACPI supported)
		MMX (MMX technology supported)
		FXSR (FXSAVE and FXSTOR instructions supported)
		SSE (Streaming SIMD extensions)
		SSE2 (Streaming SIMD extensions 2)
		SS (Self-snoop)
		HTT (Multi-threading)
		TM (Thermal monitor supported)
		PBE (Pending break enabled)
	Version: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz
	Voltage: 0.8 V
	External Clock: 100 MHz
	Max Speed: 2500 MHz
	Current Speed: 2400 MHz
	Status: Populated, Enabled
	Upgrade: Other
	L1 Cache Handle: 0x003C
	L2 Cache Handle: 0x003D
	L3 Cache Handle: 0x003E
	Serial Number: To Be Filled By O.E.M.
	Asset Tag: To Be Filled By O.E.M.
	Part Number: To Be Filled By O.E.M.
	Core Count: 2
	Core Enabled: 2
	Thread Count: 4
	Characteristics:
		64-bit capable
		Multi-Core
		Hardware Thread
		Execute Protection
		Enhanced Virtualization
		Power/Performance Control

Handle 0x0040, DMI type 20, 35 bytes
Memory Device Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x000FFFFFFFF
	Range Size: 4 GB
	Physical Device Handle: 0x0039
	Memory Array Mapped Address Handle: 0x003B
	Partition Row Position: 1
	Interleave Position: 1
	Interleaved Data Depth: 1

Handle 0x0041, DMI type 20, 35 bytes
Memory Device Mapped Address
	Starting Address: 0x00100000000
	Ending Address: 0x001FFFFFFFF
	Range Size: 4 GB
	Physical Device Handle: 0x003A
	Memory Array Mapped Address Handle: 0x003B
	Partition Row Position: 1
	Interleave Position: 2
	Interleaved Data Depth: 1

Handle 0x0300, DMI type 126, 22 bytes
Inactive

Handle 0x1600, DMI type 22, 26 bytes
Portable Battery
	Location: Sys. Battery Bay
	Manufacturer: SMP
	Manufacture Date: 11/04/2016
	Serial Number: 0737
	Name: DELL TP1GT61
	Design Capacity: 59990 mWh
	Design Voltage: 7600 mV
	SBDS Version: 1.0
	Maximum Error: 2%
	SBDS Chemistry: LiP
	OEM-specific Information: 0x00000801

Handle 0x1B00, DMI type 27, 15 bytes
Cooling Device
	Temperature Probe Handle: 0x1C00
	Type: Chip Fan
	Status: OK
	OEM-specific Information: 0x0000DD00
	Nominal Speed: 6000 rpm
	Description: CPU Fan

Handle 0x1C00, DMI type 28, 22 bytes
Temperature Probe
	Description: CPU Probe
	Location: Motherboard
	Status: OK
	Maximum Value: 127.0 deg C
	Minimum Value: -127.0 deg C
	Resolution: 1.000 deg C
	Tolerance: Unknown
	Accuracy: Unknown
	OEM-specific Information: 0x0000DC00
	Nominal Value: 10.0 deg C

Handle 0x1C01, DMI type 28, 22 bytes
Temperature Probe
	Description: True Ambient
	Location: Motherboard
	Status: OK
	Maximum Value: 127.0 deg C
	Minimum Value: -127.0 deg C
	Resolution: 1.000 deg C
	Tolerance: Unknown
	Accuracy: Unknown
	OEM-specific Information: 0x0000DC01
	Nominal Value: 10.0 deg C

Handle 0x1C02, DMI type 28, 22 bytes
Temperature Probe
	Description: Memory Module
	Location: Motherboard
	Status: OK
	Maximum Value: 127.0 deg C
	Minimum Value: -127.0 deg C
	Resolution: 1.000 deg C
	Tolerance: Unknown
	Accuracy: Unknown
	OEM-specific Information: 0x0000DC02
	Nominal Value: 10.0 deg C

Handle 0x1C03, DMI type 28, 22 bytes
Temperature Probe
	Description: Other Probe
	Location: Processor
	Status: OK
	Maximum Value: 127.0 deg C
	Minimum Value: -127.0 deg C
	Resolution: 1.000 deg C
	Tolerance: Unknown
	Accuracy: Unknown
	OEM-specific Information: 0x0000DC03
	Nominal Value: 10.0 deg C

Handle 0xB100, DMI type 177, 12 bytes
OEM-specific Type
	Header and Data:
		B1 0C 00 B1 1A 00 00 00 00 00 00 00

Handle 0xB200, DMI type 178, 88 bytes
OEM-specific Type
	Header and Data:
		B2 58 00 B2 3D 00 0C 00 3C 00 0A 00 3B 00 0B 00
		0A 01 12 00 52 00 20 00 41 00 24 00 42 00 18 00
		58 00 14 00 57 00 13 00 10 00 FF 00 11 00 FF 00
		12 00 FF 00 13 00 FF 00 14 00 FF 00 1E 00 FF 00
		1F 00 FF 00 20 00 FF 00 21 00 FF 00 22 00 FF 00
		50 01 26 00 44 00 16 00
	Strings:
		                                    

Handle 0xD000, DMI type 208, 16 bytes
OEM-specific Type
	Header and Data:
		D0 10 00 D0 03 0A FE 00 5B 07 01 02 00 00 00 00
	Strings:
		20170207
		20170209

Handle 0xD800, DMI type 216, 9 bytes
OEM-specific Type
	Header and Data:
		D8 09 00 D8 01 02 01 88 00
	Strings:
		"Intel Corp."
		"1052"

Handle 0xD900, DMI type 217, 8 bytes
OEM-specific Type
	Header and Data:
		D9 08 00 D9 01 02 01 03
	Strings:
		US-101
		Proprietary

Handle 0xDA00, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 00 DA B2 00 04 FF 1F B6 40 1E 00 1E 00 00
		00 22 00 22 00 01 00 23 00 23 00 00 00 28 00 28
		00 00 00 29 00 29 00 01 00 2A 00 2A 00 02 00 2B
		00 2B 00 FF FF 2C 00 2C 00 FF FF 42 00 42 00 01
		00 43 00 43 00 00 00 50 00 50 00 01 00 5C 00 5C
		00 01 00 5D 00 5D 00 00 00 7D 00 7D 00 FF FF 93
		00 93 00 01 00 94 00 94 00 00 00 9B 00 9B 00 01
		00 9C 00 9C 00 00 00 9F 00 9F 00 00 00 A0 00 A0
		00 01 00 A1 00 A1 00 00 00 A3 00 A3 00 01 00 D1
		00 D1 00 01 00 D2 00 D2 00 00 00 EA 00 EA 00 00
		00 EB 00 EB 00 01 00 EC 00 EC 00 02 00 ED 00 ED
		00 00 00 F0 00 F0 00 01 00 09 01 09 01 00 00 0E
		01 0E 01 01 00 0F 01 0F 01 00 00 1B 01 1B 01 00
		00 1C 01 1C 01 01 00 2B 01 2B 01 01 00 2C 01 2C
		01 00 00 2D 01 2D 01 01 00 2E 01 2E 01 00 00 35
		01 35 01 FF 00 FF FF FF FF 00 00

Handle 0xDA01, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 01 DA B2 00 04 FF 1F B6 40 38 01 38 01 01
		00 39 01 39 01 02 00 40 01 40 01 00 00 41 01 41
		01 01 00 44 01 44 01 00 00 45 01 45 01 01 00 4A
		01 4A 01 00 00 4B 01 4B 01 01 00 4C 01 4C 01 01
		00 4D 01 4D 01 00 00 52 01 52 01 01 00 53 01 53
		01 00 00 75 01 75 01 02 00 76 01 76 01 01 00 7F
		01 7F 01 00 00 80 01 80 01 01 00 81 01 81 01 00
		00 82 01 82 01 01 00 89 01 89 01 00 00 8A 01 8A
		01 01 00 9B 01 9B 01 00 00 9C 01 9C 01 01 00 CE
		01 CE 01 02 00 DE 01 DE 01 00 00 DF 01 DF 01 01
		00 E1 01 E1 01 00 00 E8 01 E8 01 00 00 E9 01 E9
		01 01 00 EA 01 EA 01 00 00 EB 01 EB 01 01 00 02
		02 02 02 00 00 03 02 03 02 01 00 04 02 04 02 00
		00 05 02 05 02 01 00 2D 02 2D 02 01 00 2E 02 2E
		02 00 00 32 02 32 02 02 00 33 02 33 02 01 00 35
		02 35 02 01 00 FF FF FF FF 00 00

Handle 0xDA02, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 02 DA B2 00 04 FF 1F B6 40 36 02 36 02 00
		00 4A 02 4A 02 01 00 4B 02 4B 02 01 00 4C 02 4C
		02 00 00 64 02 64 02 01 00 65 02 65 02 00 00 66
		02 66 02 01 00 67 02 67 02 00 00 68 02 68 02 01
		00 69 02 69 02 00 00 6C 02 6C 02 01 00 6D 02 6D
		02 00 00 6E 02 6E 02 00 00 85 02 85 02 01 00 86
		02 86 02 00 00 94 02 94 02 01 00 95 02 95 02 00
		00 A3 02 A3 02 01 00 A4 02 A4 02 00 00 A7 02 A7
		02 01 00 A8 02 A8 02 00 00 B9 02 B9 02 01 00 BA
		02 BA 02 00 00 BD 02 BD 02 01 00 BE 02 BE 02 00
		00 CD 02 CD 02 01 00 D8 02 D8 02 FF FF D9 02 D9
		02 FF FF DA 02 DA 02 FF FF DB 02 DB 02 FF FF DC
		02 DC 02 FF FF DD 02 DD 02 FF FF DE 02 DE 02 FF
		FF DF 02 DF 02 FF FF E3 02 E3 02 01 00 E4 02 E4
		02 00 00 E5 02 E5 02 01 00 EB 02 EB 02 06 00 ED
		02 ED 02 01 00 FF FF FF FF 00 00

Handle 0xDA03, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 03 DA B2 00 04 FF 1F B6 40 EE 02 EE 02 00
		00 F6 02 F6 02 08 00 12 03 12 03 03 00 13 03 13
		03 01 00 14 03 14 03 00 00 15 03 15 03 01 00 16
		03 16 03 00 00 17 03 17 03 01 00 18 03 18 03 00
		00 19 03 19 03 01 00 1A 03 1A 03 00 00 1B 03 1B
		03 01 00 1C 03 1C 03 00 00 1D 03 1D 03 01 00 1E
		03 1E 03 00 00 1F 03 1F 03 01 00 20 03 20 03 00
		00 25 03 25 03 01 00 26 03 26 03 01 00 29 03 29
		03 01 00 2A 03 2A 03 00 00 2B 03 2B 03 01 00 2C
		03 2C 03 00 00 38 03 38 03 01 00 39 03 39 03 01
		00 41 03 41 03 03 00 42 03 42 03 04 00 43 03 43
		03 05 00 46 03 46 03 01 00 47 03 47 03 02 00 48
		03 48 03 05 00 49 03 49 03 FF FF 4A 03 4A 03 FF
		FF 4D 03 4D 03 01 00 4E 03 4E 03 00 00 4F 03 4F
		03 01 00 50 03 50 03 00 00 57 03 57 03 00 00 58
		03 58 03 01 00 FF FF FF FF 00 00

Handle 0xDA04, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 04 DA B2 00 04 FF 1F B6 40 5B 03 5B 03 01
		00 5C 03 5C 03 00 00 5D 03 5D 03 01 00 5E 03 5E
		03 00 00 5F 03 5F 03 01 00 60 03 60 03 00 00 61
		03 61 03 01 00 62 03 62 03 00 00 66 03 66 03 00
		00 67 03 67 03 01 00 69 03 69 03 00 00 6A 03 6A
		03 01 00 6B 03 6B 03 02 00 6C 03 6C 03 00 00 6D
		03 6D 03 01 00 6E 03 6E 03 FF FF 74 03 74 03 00
		00 75 03 75 03 01 00 76 03 76 03 01 00 77 03 77
		03 00 00 78 03 78 03 01 00 79 03 79 03 00 00 A2
		03 A2 03 01 00 A3 03 A3 03 00 00 BE 03 BE 03 FF
		FF C1 03 C1 03 02 00 C2 03 C2 03 03 00 C3 03 C3
		03 04 00 C5 03 C5 03 01 00 C6 03 C6 03 00 00 C7
		03 C7 03 01 00 C8 03 C8 03 02 00 C9 03 C9 03 01
		00 CA 03 CA 03 00 00 CB 03 CB 03 FF FF D3 03 D3
		03 FF FF D4 03 D4 03 01 00 D5 03 D5 03 00 00 D6
		03 D6 03 01 00 FF FF FF FF 00 00

Handle 0xDA05, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 05 DA B2 00 04 FF 1F B6 40 D7 03 D7 03 00
		00 F6 03 F6 03 01 00 F7 03 F7 03 00 00 FE 03 FE
		03 01 00 FF 03 FF 03 00 00 01 04 01 04 01 00 02
		04 02 04 00 00 03 04 03 04 01 00 04 04 04 04 00
		00 1E 04 1E 04 01 00 1F 04 1F 04 00 00 20 04 20
		04 FF FF 2B 04 2B 04 FF FF 31 04 31 04 FF FF 32
		04 32 04 01 00 33 04 33 04 00 00 36 04 36 04 01
		00 37 04 37 04 00 00 38 04 38 04 01 00 39 04 39
		04 00 00 3A 04 3A 04 01 00 3B 04 3B 04 00 00 3C
		04 3C 04 01 00 3D 04 3D 04 00 00 40 04 40 04 01
		00 41 04 41 04 00 00 42 04 42 04 01 00 43 04 43
		04 00 00 44 04 44 04 01 00 45 04 45 04 00 00 46
		04 46 04 01 00 47 04 47 04 00 00 61 04 61 04 01
		00 62 04 62 04 00 00 7D 04 7D 04 01 00 7E 04 7E
		04 00 00 7F 04 7F 04 02 00 80 04 80 04 01 00 81
		04 81 04 00 00 FF FF FF FF 00 00

Handle 0xDA06, DMI type 218, 143 bytes
OEM-specific Type
	Header and Data:
		DA 8F 06 DA B2 00 04 FF 1F B6 40 85 04 85 04 01
		00 86 04 86 04 00 00 8C 04 8C 04 01 00 8D 04 8D
		04 00 00 96 04 96 04 01 00 97 04 97 04 00 00 9E
		04 9E 04 01 00 9F 04 9F 04 00 00 A0 04 A0 04 01
		00 A1 04 A1 04 00 00 A2 04 A2 04 01 00 A3 04 A3
		04 00 00 E6 04 E6 04 01 00 E7 04 E7 04 00 00 4A
		40 4A 40 01 00 4B 40 4B 40 00 00 0C 80 0C 80 00
		00 0D 80 0D 80 00 00 0E 80 0E 80 01 00 0F 80 0F
		80 FF FF 04 A0 04 A0 01 00 FF FF FF FF 00 00

Handle 0xDC00, DMI type 220, 22 bytes
OEM-specific Type
	Header and Data:
		DC 16 00 DC 00 F1 00 00 02 F1 00 00 00 00 00 00
		00 00 00 00 00 00

Handle 0xDC01, DMI type 220, 22 bytes
OEM-specific Type
	Header and Data:
		DC 16 01 DC 10 F1 00 00 12 F1 00 00 00 00 00 00
		00 00 00 00 00 00

Handle 0xDC02, DMI type 220, 22 bytes
OEM-specific Type
	Header and Data:
		DC 16 02 DC 20 F1 00 00 22 F1 00 00 00 00 00 00
		00 00 00 00 00 00

Handle 0xDC03, DMI type 220, 22 bytes
OEM-specific Type
	Header and Data:
		DC 16 03 DC 30 F1 00 00 32 F1 00 00 00 00 00 00
		00 00 00 00 00 00

Handle 0xDD00, DMI type 221, 19 bytes
OEM-specific Type
	Header and Data:
		DD 13 00 DD 02 01 00 00 F6 01 F6 00 00 00 00 00
		00 00 00

Handle 0xDE00, DMI type 222, 16 bytes
OEM-specific Type
	Header and Data:
		DE 10 00 DE 01 04 00 00 17 12 07 20 41 01 00 00

Handle 0xF025, DMI type 218, 77 bytes
OEM-specific Type
	Header and Data:
		DA 4D 25 F0 B2 00 04 FF 1F B6 40 00 F1 00 F1 01
		00 02 F1 02 F1 01 00 10 F1 10 F1 01 00 12 F1 12
		F1 01 00 20 F1 20 F1 01 00 22 F1 22 F1 01 00 30
		F1 30 F1 01 00 32 F1 32 F1 01 00 00 F6 00 F6 01
		00 01 F6 01 F6 01 00 FF FF FF FF 00 00

Handle 0xF026, DMI type 130, 20 bytes
OEM-specific Type
	Header and Data:
		82 14 26 F0 24 41 4D 54 00 00 00 00 00 A5 AF 02
		C0 00 00 00

Handle 0xF027, DMI type 131, 64 bytes
OEM-specific Type
	Header and Data:
		83 40 27 F0 31 00 00 00 0B 00 00 00 00 00 0A 00
		F8 00 58 9D 00 00 00 00 01 00 00 00 07 00 0B 00
		EB 0C 00 00 00 00 00 00 FE 00 FF FF 00 00 00 00
		00 00 00 00 22 00 00 00 76 50 72 6F 00 00 00 00

Handle 0xF028, DMI type 205, 26 bytes
OEM-specific Type
	Header and Data:
		CD 1A 28 F0 03 01 00 02 02 01 00 00 02 00 00 00
		00 5E 00 03 00 00 05 00 00 00
	Strings:
		Reference Code - CPU
		uCode Version
		TXT ACM version

Handle 0xF029, DMI type 205, 26 bytes
OEM-specific Type
	Header and Data:
		CD 1A 29 F0 03 01 00 02 02 01 00 00 02 00 0B 00
		00 0A 00 03 04 0B 07 00 EB 0C
	Strings:
		Reference Code - ME 11.0
		MEBx version
		ME Firmware Version
		Corporate SKU

Handle 0xF02A, DMI type 205, 75 bytes
OEM-specific Type
	Header and Data:
		CD 4B 2A F0 0A 01 00 02 02 01 00 00 02 03 FF FF
		FF FF FF 04 00 FF FF FF 21 00 05 00 FF FF FF 21
		00 06 00 FF FF FF FF FF 07 00 3E 00 00 00 00 08
		00 34 00 00 00 00 09 00 0B 00 00 00 00 0A 00 3E
		00 00 00 00 0B 00 34 00 00 00 00
	Strings:
		Reference Code - SKL PCH
		PCH-CRID Status
		Disabled
		PCH-CRID Original Value
		PCH-CRID New Value
		OPROM - RST - RAID
		SKL PCH H Bx Hsio Version
		SKL PCH H Dx Hsio Version
		KBL PCH H Ax Hsio Version
		SKL PCH LP Bx Hsio Version
		SKL PCH LP Cx Hsio Version

Handle 0xF02B, DMI type 205, 54 bytes
OEM-specific Type
	Header and Data:
		CD 36 2B F0 07 01 00 02 02 01 00 00 02 00 02 02
		01 00 00 03 00 02 02 01 00 00 04 05 FF FF FF FF
		FF 06 00 FF FF FF 02 00 07 00 FF FF FF 02 00 08
		00 FF FF FF FF FF
	Strings:
		Reference Code - SA - System Agent
		Reference Code - MRC
		SA - PCIe Version
		SA-CRID Status
		Disabled
		SA-CRID Original Value
		SA-CRID New Value
		OPROM - VBIOS

Handle 0xF02C, DMI type 205, 103 bytes
OEM-specific Type
	Header and Data:
		CD 67 2C F0 0E 01 00 00 00 00 FF 00 02 00 FF FF
		FF FF FF 03 04 FF FF FF FF FF 05 06 FF FF FF FF
		FF 07 08 FF FF FF FF FF 09 00 00 00 00 00 00 0A
		00 FF FF FF FF FF 0B 00 FF FF 00 00 00 0C 00 00
		09 00 67 10 0D 00 02 00 00 00 00 0E 00 FF FF FF
		FF FF 0F 00 FF FF FF FF FF 10 11 01 03 03 01 00
		12 00 00 07 03 00 00
	Strings:
		Lan Phy Version
		Sensor Firmware Version
		Debug Mode Status
		Disabled
		Performance Mode Status
		Disabled
		Debug Use USB(Disabled:Serial)
		Disabled
		ICC Overclocking Version
		UNDI Version
		EC FW Version
		GOP Version
		BIOS Guard Version
		Base EC FW Version
		EC-EC Protocol Version
		Royal Park Version
		BP1.3.3.0_RP01
		Platform Version

Handle 0xF039, DMI type 136, 6 bytes
OEM-specific Type
	Header and Data:
		88 06 39 F0 00 00

Handle 0xF03A, DMI type 14, 20 bytes
Group Associations
	Name: Firmware Version Info
	Items: 5
		0xF028 (<OUT OF SPEC>)
		0xF029 (<OUT OF SPEC>)
		0xF02A (<OUT OF SPEC>)
		0xF02B (<OUT OF SPEC>)
		0xF02C (<OUT OF SPEC>)

Handle 0xF03C, DMI type 13, 22 bytes
BIOS Language Information
	Language Description Format: Long
	Installable Languages: 2
		en|US|iso8859-1
		<BAD INDEX>
	Currently Installed Language: en|US|iso8859-1

Handle 0xF03D, DMI type 14, 8 bytes
Group Associations
	Name: $MEI
	Items: 1
		0x0000 (<OUT OF SPEC>)

Handle 0xF03E, DMI type 203, 81 bytes
OEM-specific Type
	Header and Data:
		CB 51 3E F0 01 03 01 45 02 00 A0 06 81 10 80 30
		00 00 00 00 40 08 00 01 1F 00 00 C9 0B C0 47 02
		FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
		FF FF FF FF FF FF FF FF 03 00 00 00 80 00 00 00
		00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
		00
	Strings:
		MEI1
		MEI2
		MEI3

Handle 0xF04F, DMI type 127, 4 bytes
End Of Table
Comment 16 Victor Trac 2017-12-12 03:01:31 UTC
(In reply to Brandon Watkins from comment #13)
> What kernel is this supposed to be included in? I'm on an xps 9360 and still
> see the cpu stuck at min frequency after resume on 4.14.4...

Brandon - I ended up tracking down the issue to trying to charge my phone over usb-c after a resume. See comments here:  https://bugzilla.kernel.org/show_bug.cgi?id=90041#c61

Are you, by chance, only seeing the low frequency issue when trying to charge a device via usb-c?  

Also, I've since gotten rid of my XPS 13 and have moved on to a X1 Carbon. All of my strange hardware issues have disappeared.
Comment 17 Brandon Watkins 2017-12-12 03:11:56 UTC
at the time I experienced this I had no devices of any sort plugged into the laptop (I was on batter and I had closed the lid with nothing plugged into it, and a few moments later opened it still with nothing plugged in)
Comment 18 Brandon Watkins 2017-12-28 11:58:30 UTC
I've seen this happen a few more times (but I've never been able to re-create it intentionally).

The only commonality I've seen is that whenever it's happened I was resuming from sleep on battery.

It usually sees to happen if the laptop was asleep (on battery) for  a long period of time (e.g. overnight).

I've verified that when it happens, rdmsr -a 0x19a outputs:

CPU 0: 1c
CPU 1: 1c
CPU 2: 1c
CPU 3: 1c

If I then run wrmsr -a 0x19a 0x0, it changes to:

CPU 0: 0
CPU 1: 0
CPU 2: 0
CPU 3: 0


In my case this does fix it (and the issue does not recur until a subsequent suspend/resume)

I've also found that just suspending and resuming again will usually fix it as well (again until a subsequent suspend/resume triggers it

I tried updating to the latest bios (2.4.2 from November 2017) but it didn't make any difference