Kernel Bug Tracker – Bug 12904
hard lockup when connecting some external monitors unless acpi_osi="!Windows 2006" - Sony Vaio SR290
Last modified: 2010-09-28 22:02:41 UTC
Latest working kernel version: none
Earliest failing kernel version: 2.6.26
Distribution: Debian (unstable)
Hardware Environment: Sony Vaio SR290 with Mobile 4 Series Chipset Integrated Graphics (PCI ids: 8086:2a42 and 8086:2a43)
Software Environment: 64-bit Debian unstable
This laptop locks up when certain external display devices are attached after boot. Only overhead projectors seem to cause the lockup. I can attach external LCD monitors at any time and use (e.g.) xrandr without problem. Likewise, if the projector is attached before turning the laptop on, the display will be mirrored and it will work fine. In this case, unplugging the projector will cause the lockup.
Steps to reproduce:
This problem occurs in X or at the console, with or without the i915 module loaded. It occurs at the console with the framebuffer enabled or with vga=normal. In the latter case, the cursor continues to blink, but the system doesn't respond to keystrokes. Alt+SysRq doesn't work in any of these cases.
Created attachment 20610 [details]
Created attachment 20611 [details]
Created attachment 20612 [details]
dmesg output after starting X (without plugging any external monitors)
On Fri, 20 Mar 2009 11:43:19 -0700 (PDT) email@example.com wrote:
> Summary: hard lockup on Sony Vaio SR when connecting some
> external monitors
> Product: Platform Specific/Hardware
> Version: 2.5
> KernelVersion: 2.6.29-rc6
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: x86-64
> AssignedTo: firstname.lastname@example.org
> ReportedBy: email@example.com
> Latest working kernel version: none
> Earliest failing kernel version: 2.6.26
> Distribution: Debian (unstable)
> Hardware Environment: Sony Vaio SR290 with Mobile 4 Series Chipset Integrated
> Graphics (PCI ids: 8086:2a42 and 8086:2a43)
> Software Environment: 64-bit Debian unstable
> Problem Description:
> This laptop locks up when certain external display devices are attached after
> boot. Only overhead projectors seem to cause the lockup. I can attach
> external LCD monitors at any time and use (e.g.) xrandr without problem.
> Likewise, if the projector is attached before turning the laptop on, the
> display will be mirrored and it will work fine. In this case, unplugging the
> projector will cause the lockup.
> Steps to reproduce:
> This problem occurs in X or at the console, with or without the i915 module
> loaded. It occurs at the console with the framebuffer enabled or with
> vga=normal. In the latter case, the cursor continues to blink, but the system
> doesn't respond to keystrokes. Alt+SysRq doesn't work in any of these cases.
Gee, I'm struggling to work out which kernel subsystem might be involved
here. If anything I suppose it is ACPI.
Boot with acpi=off and see if its repeatable, if it is then see if booting with irqpoll has any effect (I suspect it wont)
With both options, the problem seems to go away. I can plug and unplug the projector without lockups, and even use xrandr in X to play with resolutions and turn the outputs on and off. The system seems to mostly freeze up (though the mouse pointer is still responsive) for several seconds with each xrandr command, but after a bit of flashing, the command always works. I'll attach the dmesg output in case it is useful.
irqpoll alone has no effect.
The system does not finish booting with acpi=off alone. It seems to have trouble talking to the hard drive, and eventually sits waiting for the root filesystem to appear in /dev/mapper. If I plug in a projector at this point, the console still echoes my keystrokes, so I guess it is working.
Created attachment 20620 [details]
dmesg 2.6.29-rc6 with acpi=off irqpoll
boot w/o acpi=off, make sure ACPI video driver is loaded,
look for file /proc/acpi/video/*/DOS, and run echo 1 > DOS before connecting external display devices, is the problem still reproducible in this case?
Will you please confirm whether the hard lockup still occurs in console mode if the external monitor is hot-plugged? (Please don't load the i915 module driver). If still lockup, how about the lockup if the acpi video driver is not loaded?
Will you please also attach the output of acpidump, lspci -vxxx?
Zhang: Yes, the problem is still reproducible in that case.
ykzhao: My previous combinations of tests (comment #6) were all conducted first at the console, without the i915 driver. With "acpi=off irqpoll", the console test worked, so I loaded the i915 module and found that it still worked in X. Without these kernel options, the lockup occurs at the console without the i915 module and even without the acpi video module.
Created attachment 20738 [details]
Created attachment 20739 [details]
please apply this patch, set CONFIG_DRM_I915 and rebuild your kernel.
make sure the ACPI video driver is loaded, is the problem fixed this time?
(In reply to comment #13)
> please apply this patch, set CONFIG_DRM_I915 and rebuild your kernel.
Hah, this patch.
Sorry, that patch doesn't help. With the ACPI video module loaded, I tried plugging in the projector with and without the i915 module, using the framebuffer and vga=normal. In all cases, the lockup still occurred.
I also noticed that, even thought the ACPI video module was loaded, /proc/acpi/video/ did not exist. I will attach dmesg in case it gives you some hints.
Created attachment 20760 [details]
dmesg with acpi patch
Here is dmesg with this patch applied:
With this patch, /proc/acpi/video no longer appears
hah, you must make sure ACPI video driver is loaded AFTER i915 driver.
so please reload the acpi video driver manually after boot and make sure /proc/acpi/video/ exists before connecting the external display.
I can't find a way to do that. It seems that i915 depends on the video module. If I try to manually insmod i915, it complains about an unknown symbol: acpi_video_register
modprobe, of course, helpfully loads 'video' to resolve the dependency when I ask it to load i915.
please try latest intel Xorg gfx driver and attach the output of /var/log/Xorg.0.log here with the projector plugged in.
Created attachment 20925 [details]
kernel: 2.6.29-rc6 (without the acpi patch referenced above) KMS off
libdrm: git tag libdrm-2.4.6
intel X driver: git HEAD (7e516b)
please try the latest git kernel, and set both CONFIG_ACPI_VIDEO=y, CONFIG_DRM_I915=Y and CONFIG_DRM_I915_KMS=y.
does the problem still exist?
Yes, the problem still occurs with kernel 2.6.30-rc5 and Intel X driver 2.7.0. It locks up in X with or without KMS enabled, and even at the console without the i915 module loaded (the ACPI video module is loaded, though).
please attach the output of "grep . /sys/firmware/acpi/interrups/*"
Created attachment 21543 [details]
grep . /sys/firmware/acpi/interrupts/*
grep . /sys/firmware/acpi/interrupts/*
after a fresh reboot of 2.6.30-rc5
what if you boot with acpi_osi="!Windows 2006"?
Created attachment 21555 [details]
grep . /sys/firmware/acpi/interrupts/* with acpi_osi="!Windows 2006"
Here's the interrupts info with that kernel option. I don't have a projector to attach at the moment to see if the machine locks up, but I can try that tomorrow.
Aha! That seems to have helped. No more lockups! I was able to connect a projector in the console, and in X, and fiddle with xrandr repeatedly. I'll attach dmesg. Let me know if you need any other information.
Created attachment 21560 [details]
dmesg with acpi_osi="!Windows 2006"
I guess the lockup is caused by an SMI call.
this is the EC AML query method that I think is invoked when plugging the projector,
Method (_Q28, 0, NotSerialized)
P8XH (0x00, 0x28)
If (_OSI ("Windows 2006"))
If (LEqual (\_SB.PCI0.PEGP.VGA.ATID, 0xFFFF))
Notify (\_SB.PCI0.GFX0, 0x81)
Store (0x8F, I_AL)
Store (0xA0, I_AH)
Store (0x00, I_BL)
Store (0x11, I_BH)
PHDD (0xE2, I20B)
Notify (\_SB.PCI0.LPCB.SNC, 0x91)
If the laptop is running on Windows Vista and the external ATI graphics card is not used, a SMI is invoked.
But if it's not Vista, an event is sent to the sony platform device \_SB.PCI0.LPCB.SNC
this is a problem because it's hard to know why Linux reboots when invoking the SMI.
In order to confirm my conclusion, please apply the customized DSDT attached below, which I comment the SMI call in _Q28.
Created attachment 21580 [details]
customized DSDT: don't invoke SMI when connecting projector
note that you don't need the acpi_osi="!Windows 2006" any more after applying the custom DSDT.
That worked. I used the custom DSDT, removed the acpi_osi kernel parameter, and the lockups are gone. Thanks for all your help!
Again, let me know if you need additional information or you want me to test anything else before this fix is committed.
Linux claims Vista compatibility to the BIOS for a number of reasons,
but we are getting burnt by that on this Sony.
Unless we can figure out what Vista is doing for this platform,
I think we have to disable Vista compatibility vis DMI for this system.
I too see a similar problem - I have opened a bug in Launchpad, below is a brief overview of the details.
Based on the above comments it seems like there is a partial fix for this - do we know if/when this will be rolled into the kernel?
Attaching an external monitor causes a complete lock-up - no response to pings, keyboard/mouse, etc.
Booting with a monitor connected shows no lock-up, however I get critical battery warnings (when the battery is full).
Model: Vaio VGN-NS10J
OS: Ubuntu 8.10
Kernel: Linux newton 2.6.27-14-generic #1 SMP Fri Jun 5 10:22:01 UTC 2009 x86_64 GNU/Linux
Additional details can be found in Launchpad - please let me know if you require any more details.
Just to confirm - adding acpi_osi="!Windows 2006" fixes the problem for me also.
please attach your acpidump as well.
Created attachment 21968 [details]
sudo acpidump > acpi_dump
This is the output of acpidump having booted with the acpi_osi="!Windows 2006" bootarg.
right, this is the same problem. hard lockup in SMM.
please attach your dmidecode output,
let's disable the Vista compatibility for these two laptops in Linux.
Created attachment 21997 [details]
sudo dmidecode > dmi_decode
This is the output of dmidecode having booted with the acpi_osi="!Windows 2006"
Created attachment 22000 [details]
DMI patch: disable Vista compatibility
please remove acpi_osi="!Windows 2006", apply this patch and see if it helps.
To what file do I apply this patch?
you just need to
1. enter the root directory of the Linux kernel source
2. copy the patch to this directory
3. run "patch -p1 < patch"
patch in comment #40 applied to acpi-test
shipped in linux-2.6.31-rc1
Created attachment 26195 [details]
fix string matching Sony SR290 laptop
I'm sorry I never tested the fix released with 2.6.31, but it seems that the patch doesn't quite detect my laptop model. This patch indicates the necessary change, which you should be able to verify from my earlier 'dmidecode' attachment.
I have the same problem. Kernel option 'acpi_osi="!Windows 2006' and 'acpi=off irqpoll' in my case are not actions. With kernel 2.6.31 I get a kernel panic, and kernel 2.6.33 boot goes normally, but hangs when connect an external display as well and remains. Also hanging can be seen in singlemode. after connecting/disconnecting the external display. Laptop Sony Vaio VGN-NS50B. What information about the system I have yet to add?
please verify if the problem still exists in the latest vanilla kernel (with boot option acpi_osi="!Windows 2006").
BTW, the links above don't work, please make a double check.
Sorry for the link. BB-code not working.
Vanilla kernel is now making. Post the links again.
lspci -v http://paste.ubuntu.com/434352/
lspci -vxxx http://paste.ubuntu.com/434353/
Maked vanilla kernel 6.2.34. Kernel option 'acpi_osi = "! Windows 2006"' does not have work for me. When connecting / disconnecting an external display kernel hangs.
dmesg for kernel 2.6.34 with kernel option acpi_osi = "!Windows 2006" http://paste.ubuntu.com/434894/
What information is needed from me?
Created attachment 26416 [details]
patch: disable vista compatibility for Sony VGN-NS50B_L
this seems to be an grub2 bug http://savannah.gnu.org/bugs/?27641
Please try the patch attached without the acpi_osi="!Windows 2006" boot option.
Yes. That's correct.
Please tell me if you need more information or you want me to test anything
Thank you very much!
did you test the patch?
is the problem fixed by the patch in comment #50?
Yes. I applied a patch from comment #50 and rebuild the kernel. It works. Hot connecting/disconnecting an external display without problems.
Adds a link to a new dmesg
Len, please apply the patch in comment #50.
Please don't forget the small string change in comment #45. Thanks!
patch has been sent to ACPI mail list. :)
Author: Nik A. Melchior <firstname.lastname@example.org>
Date: Mon Jun 21 12:47:05 2010 +0800
ACPI video: fix string mismatch for Sony SR290 laptop
shipped in v2.6.35-rc2-19-g096486e