Most recent kernel where this bug did *NOT* occur: 2.6.20 Distribution: FC7 Hardware Environment: IMB ThinkPad T42/Pentium-M 1.7 GHz Software Environment: FC7/ custom compiled kernel Problem Description: I have built all the cpufreq governors into the kernel. The ondemand governor works exactly how its supposed to, but when I use the conservative governor, it NEVER changes the CPU out of the lowest speed (for me, 600MHz). Even at full load, it stays at lowest speed. Steps to reproduce: Use 2.6.21 w/ conservative governor and Centrino speedstep?
Could you: 1. not use the centrino speedstep module and use the ACPI based one instead[1] 2. my partner has this laptop (well the T42p) and she has no problems. We did run into issues where occasionally no governor, even userspace, could change speed (same happened on my T40p) and that was linked to the BIOS forcing the laptop to a particular speed. Disable the cpu performance bits under your BIOS and see what happens[2] Cheers Alex [1] look at Myth 9 on page 9 of https://ols2006.108.redhat.com/2007/Reprints/brown_1-Reprint.pdf [2] http://www.thinkwiki.org/wiki/Talk:How_to_make_use_of_Dynamic_Frequency_Scaling#CPUfreq_.22stuck.22
I am using the kernel acpi module I believe, and I didn't even know there was centrino speedstep module. I'll attach my kernel config if it'll help. I now have 2.6.22.5 (compiled myself & running on fedora7). The 'conservative' governor still doesn't work right. However I don't consider it a huge problem because the 'ondemand' governor works fine. (I do believe that conservative is slightly better with power consumption but I may just be imagining that.) Anyway, heres the dmesg with cpufreq.debug=7. I rebooted, the default 'ondemand' governor loaded. i started glxgears, it jumped to the full 1.7GHz. I switched to 'conservative' governor and ran glxgears and it stayed at 600MHz. >Time: acpi_pm clocksource has been installed. Switched to high resolution mode on CPU 0 Clocksource tsc unstable (delta = -490676515 ns) floppy0: no floppy controllers found Intel(R) PRO/1000 Network Driver - version 7.3.20-k2 Copyright (c) 1999-2006 Intel Corporation. ACPI: PCI Interrupt 0000:02:01.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11 e1000: 0000:02:01.0: e1000_probe: (PCI:33MHz:32-bit) 00:11:25:80:30:41 e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection st: Version 20070203, fixed bufsize 32768, s/g segs 256 osst :I: Tape driver with OnStream support version 0.99.4 osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $ SCSI Media Changer driver v0.25 ata_piix 0000:00:1f.1: version 2.11 PCI: Enabling device 0000:00:1f.1 (0005 -> 0007) ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11 ACPI: PCI Interrupt 0000:00:1f.1[A] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1f.1 to 64 scsi0 : ata_piix scsi1 : ata_piix ata1: PATA max UDMA/100 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x00011860 irq 14 ata2: PATA max UDMA/100 cmd 0x00010170 ctl 0x00010376 bmdma 0x00011868 irq 15 ata1.00: ATA-6: HTS726060M9AT00, MH4OA6GA, max UDMA/100 ata1.00: 117210240 sectors, multi 16: LBA ata1.00: configured for UDMA/100 ata2.00: ATAPI: HL-DT-STCD-RW/DVD DRIVE GCC-4242N, 0201, max UDMA/33 ata2.00: configured for UDMA/33 scsi 0:0:0:0: Direct-Access ATA HTS726060M9AT00 MH4O PQ: 0 ANSI: 5 sd 0:0:0:0: [sda] 117210240 512-byte hardware sectors (60012 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 0:0:0:0: [sda] 117210240 512-byte hardware sectors (60012 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 > sd 0:0:0:0: [sda] Attached SCSI disk sd 0:0:0:0: Attached scsi generic sg0 type 0 scsi 1:0:0:0: CD-ROM HL-DT-ST RW/DVD GCC-4242N 0201 PQ: 0 ANSI: 5 sr0: scsi3-mmc drive: 24x/24x writer cd/rw xa/form2 cdda tray Uniform CD-ROM driver Revision: 3.20 sr 1:0:0:0: Attached scsi CD-ROM sr0 sr 1:0:0:0: Attached scsi generic sg1 type 5 Yenta: CardBus bridge found at 0000:02:00.0 [1014:0552] Yenta: Using INTVAL to route CSC interrupts to PCI Yenta: Routing CardBus interrupts to PCI Yenta TI: socket 0000:02:00.0, mfunc 0x01d21b22, devctl 0x64 Yenta: ISA IRQ mask 0x04f8, PCI irq 11 Socket status: 30000086 pcmcia: parent PCI bridge I/O window: 0x4000 - 0x8fff pcmcia: parent PCI bridge Memory window: 0xc0200000 - 0xcfffffff pcmcia: parent PCI bridge Memory window: 0xe8000000 - 0xefffffff Yenta: CardBus bridge found at 0000:02:00.1 [1014:0552] Yenta: Using INTVAL to route CSC interrupts to PCI Yenta: Routing CardBus interrupts to PCI Yenta TI: socket 0000:02:00.1, mfunc 0x01d21b22, devctl 0x64 Yenta: ISA IRQ mask 0x04f8, PCI irq 11 Socket status: 30000086 pcmcia: parent PCI bridge I/O window: 0x4000 - 0x8fff pcmcia: parent PCI bridge Memory window: 0xc0200000 - 0xcfffffff pcmcia: parent PCI bridge Memory window: 0xe8000000 - 0xefffffff ACPI: PCI Interrupt Link [LNKH] enabled at IRQ 11 ACPI: PCI Interrupt 0000:00:1d.7[D] -> Link [LNKH] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1d.7 to 64 ehci_hcd 0000:00:1d.7: EHCI Host Controller ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 ehci_hcd 0000:00:1d.7: debug port 1 PCI: cache line size of 32 is not supported by device 0000:00:1d.7 ehci_hcd 0000:00:1d.7: irq 11, io mem 0xc0000000 ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 usb usb1: configuration #1 chosen from 1 choice hub 1-0:1.0: USB hub found hub 1-0:1.0: 6 ports detected ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver USB Universal Host Controller Interface driver v3.0 ACPI: PCI Interrupt 0000:00:1d.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1d.0 to 64 uhci_hcd 0000:00:1d.0: UHCI Host Controller uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2 uhci_hcd 0000:00:1d.0: irq 11, io base 0x00001800 usb usb2: configuration #1 chosen from 1 choice hub 2-0:1.0: USB hub found hub 2-0:1.0: 2 ports detected ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11 ACPI: PCI Interrupt 0000:00:1d.1[B] -> Link [LNKD] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1d.1 to 64 uhci_hcd 0000:00:1d.1: UHCI Host Controller uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3 uhci_hcd 0000:00:1d.1: irq 11, io base 0x00001820 usb usb3: configuration #1 chosen from 1 choice hub 3-0:1.0: USB hub found hub 3-0:1.0: 2 ports detected ACPI: PCI Interrupt 0000:00:1d.2[C] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1d.2 to 64 uhci_hcd 0000:00:1d.2: UHCI Host Controller uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4 uhci_hcd 0000:00:1d.2: irq 11, io base 0x00001840 usb usb4: configuration #1 chosen from 1 choice hub 4-0:1.0: USB hub found hub 4-0:1.0: 2 ports detected Initializing USB Mass Storage driver... usb 3-2: new low speed USB device using uhci_hcd and address 2 usb 3-2: configuration #1 chosen from 1 choice usbcore: registered new interface driver usb-storage USB Mass Storage support registered. usbcore: registered new interface driver libusual PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12 serio: i8042 KBD port at 0x60,0x64 irq 1 serio: i8042 AUX port at 0x60,0x64 irq 12 mice: PS/2 mouse device common for all mice input: AT Translated Set 2 keyboard as /class/input/input3 input: PC Speaker as /class/input/input4 Synaptics Touchpad, model: 1, fw: 5.9, id: 0x2c6ab1, caps: 0x884793/0x0 serio: Synaptics pass-through port at isa0060/serio1/input0 input: SynPS/2 Synaptics TouchPad as /class/input/input5 i2c /dev entries driver ACPI: PCI Interrupt 0000:00:1f.3[B] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11 md: linear personality registered for level -1 md: raid0 personality registered for level 0 md: raid1 personality registered for level 1 md: raid10 personality registered for level 10 raid6: int32x1 505 MB/s raid6: int32x2 620 MB/s raid6: int32x4 526 MB/s raid6: int32x8 558 MB/s raid6: mmxx1 1442 MB/s raid6: mmxx2 1831 MB/s raid6: sse1x1 1236 MB/s raid6: sse1x2 1965 MB/s raid6: sse2x1 2102 MB/s raid6: sse2x2 2463 MB/s raid6: using algorithm sse2x2 (2463 MB/s) md: raid6 personality registered for level 6 md: raid5 personality registered for level 5 md: raid4 personality registered for level 4 raid5: automatically using best checksumming function: pIII_sse pIII_sse : 4496.000 MB/sec raid5: using function: pIII_sse (4496.000 MB/sec) md: multipath personality registered for level -4 md: faulty personality registered for level -5 device-mapper: ioctl: 4.11.0-ioctl (2006-10-12) initialised: dm-devel@redhat.com device-mapper: multipath: version 1.0.5 loaded device-mapper: multipath round-robin: version 1.0.0 loaded device-mapper: multipath emc: version 0.0.3 loaded usbcore: registered new interface driver hiddev input: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM) as /class/input/input6 input: USB HID v1.10 Mouse [Microsoft Microsoft 3-Button Mouse with IntelliEye(TM)] on usb-0000:00:1d.1-2 usbcore: registered new interface driver usbhid drivers/hid/usbhid/hid-core.c: v2.6:USB HID core driver Advanced Linux Sound Architecture Driver Version 1.0.14 (Thu May 31 09:03:25 2007 UTC). ACPI: PCI Interrupt 0000:00:1f.5[B] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1f.5 to 64 intel8x0_measure_ac97_clock: measured 55512 usecs intel8x0: clocking to 48000 ALSA device list: #0: Intel 82801DB-ICH4 with AD1981B at irq 11 TCP cubic registered Initializing XFRM netlink socket NET: Registered protocol family 1 NET: Registered protocol family 10 lo: Disabled Privacy Extensions IPv6 over IPv4 tunneling driver sit0: Disabled Privacy Extensions NET: Registered protocol family 17 NET: Registered protocol family 15 acpi-cpufreq: acpi_cpufreq_init acpi-cpufreq: acpi_cpufreq_early_init cpufreq-core: trying to register driver acpi-cpufreq cpufreq-core: adding CPU 0 acpi-cpufreq: acpi_cpufreq_cpu_init acpi-cpufreq: HARDWARE addr space freq-table: table entry 0: 1700000 kHz, 0 index freq-table: table entry 1: 1400000 kHz, 1 index freq-table: table entry 2: 1200000 kHz, 2 index freq-table: table entry 3: 1000000 kHz, 3 index freq-table: table entry 4: 800000 kHz, 4 index freq-table: table entry 5: 600000 kHz, 5 index acpi-cpufreq: get_cur_freq_on_cpu (0) acpi-cpufreq: get_cur_val = 100667688 acpi-cpufreq: cur freq = 1700000 acpi-cpufreq: CPU0 - ACPI performance management activated. acpi-cpufreq: *P0: 1700 MHz, 21000 mW, 500 uS acpi-cpufreq: P1: 1400 MHz, 17500 mW, 500 uS acpi-cpufreq: P2: 1200 MHz, 15000 mW, 500 uS acpi-cpufreq: P3: 1000 MHz, 12500 mW, 500 uS acpi-cpufreq: P4: 800 MHz, 10000 mW, 500 uS acpi-cpufreq: P5: 600 MHz, 7500 mW, 500 uS freq-table: setting show_table for cpu 0 to f7dc6b00 cpufreq-core: setting new policy for CPU 0: 600000 - 1700000 kHz acpi-cpufreq: acpi_cpufreq_verify freq-table: request for verification of policy (600000 - 1700000 kHz) for cpu 0 freq-table: verification lead to (600000 - 1700000 kHz) for cpu 0 acpi-cpufreq: acpi_cpufreq_verify freq-table: request for verification of policy (600000 - 1700000 kHz) for cpu 0 freq-table: verification lead to (600000 - 1700000 kHz) for cpu 0 cpufreq-core: new min and max freqs are 600000 - 1700000 kHz cpufreq-core: governor switch cpufreq-core: __cpufreq_governor for CPU 0, event 1 performance: setting to 1700000 kHz because of event 1 cpufreq-core: target for CPU 0: 1700000 kHz, relation 1 acpi-cpufreq: acpi_cpufreq_target 1700000 (0) freq-table: request for target 1700000 kHz (relation: 1) for cpu 0 freq-table: target is 0 (1700000 kHz, 0) acpi-cpufreq: Called after resume, resetting to P0 cpufreq-core: notification 0 of frequency transition to 1700000 kHz userspace: saving cpu_cur_freq of cpu 0 to be 1700000 kHz cpufreq-core: saving 6798664 as reference value for loops_per_jiffy;freq is 1700000 kHz cpufreq-core: notification 1 of frequency transition to 1700000 kHz userspace: saving cpu_cur_freq of cpu 0 to be 1700000 kHz cpufreq-core: governor: change or update limits cpufreq-core: __cpufreq_governor for CPU 0, event 3 performance: setting to 1700000 kHz because of event 3 cpufreq-core: target for CPU 0: 1700000 kHz, relation 1 acpi-cpufreq: acpi_cpufreq_target 1700000 (0) freq-table: request for target 1700000 kHz (relation: 1) for cpu 0 freq-table: target is 0 (1700000 kHz, 0) acpi-cpufreq: Already at target state (P0) cpufreq-core: initialization complete cpufreq-core: driver acpi-cpufreq up and running cpufreq-core: trying to register driver centrino Using IPI Shortcut mode Freeing unused kernel memory: 224k freed kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. IBM TrackPoint firmware: 0x0e, buttons: 3/3 input: TPPS/2 IBM TrackPoint as /class/input/input7 Linux agpgart interface v0.102 (c) Dave Jones agpgart: Detected an Intel 855PM Chipset. agpgart: AGP aperture is 256M @ 0xd0000000 ieee80211_crypt: registered algorithm 'NULL' ieee80211: 802.11 data/management/control stack, 1.2.18 ieee80211: Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com> ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.2.2dmq ipw2200: Copyright(c) 2003-2006 Intel Corporation ACPI: PCI Interrupt 0000:02:02.0[A] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11 ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection NET: Registered protocol family 23 nsc_ircc: Unknown parameter `PNP0511' parport_pc 00:0a: reported by Plug and Play ACPI parport0: PC-style at 0x3bc, irq 7 [PCSPP,TRISTATE] ipw2200: Detected geography ZZM (11 802.11bg channels, 0 802.11a channels) EXT3 FS on sda5, internal journal kjournald starting. Commit interval 5 seconds EXT3 FS on sda3, internal journal EXT3-fs: mounted filesystem with ordered data mode. Adding 779112k swap on /dev/sda6. Priority:-1 extents:1 across:779112k IA-32 Microcode Update Driver: v1.14a <tigran@aivazian.fsnet.co.uk> ip6_tables: (C) 2000-2006 Netfilter Core Team ip_tables: (C) 2000-2006 Netfilter Core Team Netfilter messages via NETLINK v0.30. nf_conntrack version 0.5.0 (7168 buckets, 57344 max) ADDRCONF(NETDEV_UP): eth1: link is not ready ADDRCONF(NETDEV_UP): eth1: link is not ready ACPI: PCI Interrupt 0000:01:00.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11 [drm] Initialized drm 1.1.0 20060810 [drm] Initialized radeon 1.27.0 20060524 on minor 0 agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0. agpgart: Putting AGP V2 device at 0000:00:00.0 into 1x mode agpgart: Putting AGP V2 device at 0000:01:00.0 into 1x mode [drm] Setting GART location based on new memory map [drm] Loading R300 Microcode [drm] writeback test succeeded in 2 usecs cpufreq-core: setting new policy for CPU 0: 600000 - 1700000 kHz acpi-cpufreq: acpi_cpufreq_verify freq-table: request for verification of policy (600000 - 1700000 kHz) for cpu 0 freq-table: verification lead to (600000 - 1700000 kHz) for cpu 0 acpi-cpufreq: acpi_cpufreq_verify freq-table: request for verification of policy (600000 - 1700000 kHz) for cpu 0 freq-table: verification lead to (600000 - 1700000 kHz) for cpu 0 cpufreq-core: new min and max freqs are 600000 - 1700000 kHz cpufreq-core: governor switch cpufreq-core: __cpufreq_governor for CPU 0, event 2 cpufreq-core: __cpufreq_governor for CPU 0, event 1 cpufreq-core: governor: change or update limits cpufreq-core: __cpufreq_governor for CPU 0, event 3 cpufreq-core: target for CPU 0: 1651428 kHz, relation 0 acpi-cpufreq: acpi_cpufreq_target 1651428 (0) freq-table: request for target 1651428 kHz (relation: 0) for cpu 0 freq-table: target is 0 (1700000 kHz, 0) acpi-cpufreq: Already at target state (P0) cpufreq-core: target for CPU 0: 825714 kHz, relation 0 acpi-cpufreq: acpi_cpufreq_target 825714 (0) freq-table: request for target 825714 kHz (relation: 0) for cpu 0 freq-table: target is 3 (1000000 kHz, 3) cpufreq-core: notification 0 of frequency transition to 1000000 kHz printk: 22 messages suppressed. cpufreq-core: target for CPU 0: 48571 kHz, relation 0 ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready printk: 8 messages suppressed. cpufreq-core: target for CPU 0: 1700000 kHz, relation 1 acpi-cpufreq: acpi_cpufreq_target 1700000 (0) eth0: no IPv6 routers present cpufreq-core: setting new policy for CPU 0: 600000 - 1700000 kHz acpi-cpufreq: acpi_cpufreq_verify freq-table: request for verification of policy (600000 - 1700000 kHz) for cpu 0 freq-table: verification lead to (600000 - 1700000 kHz) for cpu 0 acpi-cpufreq: acpi_cpufreq_verify freq-table: request for verification of policy (600000 - 1700000 kHz) for cpu 0 freq-table: verification lead to (600000 - 1700000 kHz) for cpu 0 cpufreq-core: new min and max freqs are 600000 - 1700000 kHz cpufreq-core: governor switch cpufreq-core: __cpufreq_governor for CPU 0, event 2 cpufreq-core: __cpufreq_governor for CPU 0, event 1 cpufreq-core: governor: change or update limits cpufreq-core: __cpufreq_governor for CPU 0, event 3 Thanks
Created attachment 12666 [details] My kernel config for 2.6.22.5
is this still a problem with the latest stable kernel? BTW, it is unclear (to me) why the conservative governor exists when ondemand works. Maybe the fix is to delete it...
bug closed. please re-open it if the problem still exists in the latest upstream kernel.