[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
I am now running saucy and the bug is still seen there current policy: frequency should be within 600 MHz and 700 MHz. The governor ondemand may decide which speed to use within this range. I will try a mainline kernel when I get time, but all the other mainline kernels I have tried in the past have this issue, and the upstream bug nobody seems to care about fixing either, so im pretty sure it will still be there. Linux smeg 3.11.0-11-generic #17-Ubuntu SMP Tue Oct 1 19:42:04 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Tags added: saucy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Tags added: latest-bios-2jkt49aus ** Tags added: needs-upstream-testing ** Tags added: regression-potential ** Tags removed: regression-potential ** Tags added: regression-release -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Anton Piatek, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-v3.12 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Triaged = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Tried the last solution, doesn't work for me. root@LineaAlba:/etc# cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpuf...@vger.kernel.org, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 800 MHz - 1.60 GHz available frequency steps: 1.60 GHz, 1.40 GHz, 1.30 GHz, 1.20 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 800 MHz and 800 MHz. The governor performance may decide which speed to use within this range. current CPU frequency is 800 MHz (asserted by call to hardware). cpufreq stats: 1.60 GHz:6,61%, 1.40 GHz:0,00%, 1.30 GHz:15,98%, 1.20 GHz:0,00%, 1.10 GHz:0,00%, 1000 MHz:0,00%, 900 MHz:0,00%, 800 MHz:77,40% (15) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
I'm happy to report that processor.ignore_ppc=1 seems to have fixed the problem. The output now looks like: cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpuf...@vger.kernel.org, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 800 MHz - 1.60 GHz available frequency steps: 1.60 GHz, 1.40 GHz, 1.30 GHz, 1.20 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 800 MHz and 1.60 GHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 800 MHz (asserted by call to hardware). cpufreq stats: 1.60 GHz:88,52%, 1.40 GHz:0,06%, 1.30 GHz:0,07%, 1.20 GHz:0,06%, 1.10 GHz:0,08%, 1000 MHz:0,09%, 900 MHz:0,06%, 800 MHz:11,06% (529) BTW this is a Samsung NC20 with the latest BIOS. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Had a similar problem with intel atom (2 cores, 1,6GHz) in ubuntu 12.04: governor was ondemand, speed was always 800MHz (the lowest speed, and it felt way more slow than twice as slow) Upgraded to 12.10, the problem persisted. Installed package cpufreqd (which was not present), and then the same governor ondemand, keeps speed at 1.60Ghz, and I can work. Want some data? Please ask -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Changed in: linux Status: In Progress = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Maybe it related to this bug https://bugzilla.kernel.org/show_bug.cgi?id=43284 I have same problem on my HP Compaq 6715b. ** Bug watch added: Linux Kernel Bug Tracker #43284 http://bugzilla.kernel.org/show_bug.cgi?id=43284 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Changed in: linux Status: Incomplete = In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
The plot thickens... I turned of the computer for a few minutes this morning (it is normally always on), and when it came back up the CPU now shows a full speed range. Either it is something that a cold start reset in the bios, or perhaps something related to thermal protection trying to lock the max speed. I had actually rebooted the box a few minutes before powering it off, and it was still running with a scaled back cpu speed, so it really doesn't look like it is related to the version of my kernel nor any packages. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
acpidump for low cpu speed attached, it was generated from the ubuntu 3.2.0-23 kernel $cat /proc/version_signature Ubuntu 3.2.0-23.36-generic 3.2.14 ** Attachment added: acpidump_lowfreq.log.gz https://bugs.launchpad.net/linux/+bug/962947/+attachment/3104464/+files/acpidump_lowfreq.log.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Attachment added: acpidump-3.0.0-17-generic.log https://bugs.launchpad.net/linux/+bug/962947/+attachment/3104506/+files/acpidump-3.0.0-17-generic.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Attachment added: acpidump-3.2.0-22-generic.log https://bugs.launchpad.net/linux/+bug/962947/+attachment/3104507/+files/acpidump-3.2.0-22-generic.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Attachment added: acpidump-3.4.0-030400rc4-generic.log https://bugs.launchpad.net/linux/+bug/962947/+attachment/3104508/+files/acpidump-3.4.0-030400rc4-generic.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
I have just attached 3 more acpi dumps. It appears that after updating a large number of packages yesterday, all 4 kernels I have installed run at 700mhz today. 3.2.0-22 3.2.0-23 3.0.0 3.4.0 mainline all run at 700mhz. I am not sure the kernel itself can be the problem here Attached is my dpkg log, hopefully someone can help me find another package which might influence the cpu scaling behaviour. ** Attachment added: dpkg.log https://bugs.launchpad.net/linux/+bug/962947/+attachment/3104509/+files/dpkg.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Changed in: linux Status: Confirmed = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Attachment added: acpidump log https://bugs.launchpad.net/linux/+bug/962947/+attachment/3095310/+files/acpidump.log.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Strangely, I accidentally booted a 3.2 kernel this morning and it is working at full speed. The machine is a desktop, so it is always on AC power. anton@smeg:~$cat /proc/version_signature Ubuntu 3.2.0-22.35-generic 3.2.14 anton@smeg:~$cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpuf...@vger.kernel.org, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 1.60 GHz - 1.87 GHz available frequency steps: 1.87 GHz, 1.60 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1.60 GHz and 1.87 GHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 1.87 GHz. cpufreq stats: 1.87 GHz:62.86%, 1.60 GHz:37.14% (658) analyzing CPU 1: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.0 us. hardware limits: 1.60 GHz - 1.87 GHz available frequency steps: 1.87 GHz, 1.60 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1.60 GHz and 1.87 GHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 1.87 GHz. cpufreq stats: 1.87 GHz:54.78%, 1.60 GHz:45.22% (540) I am beginning to think that the BIOS or hardware is at fault. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Can you supply the ACPI dump when it gets stuck in a lower CPU frequency state too? It does seem curious, but the faster CPU configuration does not supply the _PSS in the tables, which is what was originally limiting the CPU speed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
@Anton, I'm finding this one hard to understand, the ACPI tables in your
machine have the _PSS defined as:
Name (_PSS, Package (0x02)
{
Package (0x06)
{
0x02BC, // 700 MHz
0x7918,
0x000A,
0x000A,
0x0728,
0x0728
},
Package (0x06)
{
0x0258, // 600 Mhz
0x332C,
0x000A,
0x000A,
0x061D,
0x061D
}
})
So this explains the earlier limit of 600 or 700 Mhz CPU frequency.
However, I don't understand why the 3.0.x kernel is now picking up
faster settings for _PSS. Are you comparing the machine when running
on AC or battery? Can you attach the ACPI tables to this bug now that
you have higher CPU frequencies so I can just sanity check this.
do:
sudo apt-get install acpidump
sudo acpidump acpidump.log
Thanks
--
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CPU scaled back to very slow speed, cannot increase speed
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[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Reverting back to a Ubuntu 3.0 kernel works fine! $cat /proc/version_signature Ubuntu 3.0.0-17.30-generic 3.0.22 $cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpuf...@vger.kernel.org, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 1.60 GHz - 1.87 GHz available frequency steps: 1.87 GHz, 1.60 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1.60 GHz and 1.87 GHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 1.87 GHz. cpufreq stats: 1.87 GHz:75.13%, 1.60 GHz:24.87% (4778) analyzing CPU 1: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.0 us. hardware limits: 1.60 GHz - 1.87 GHz available frequency steps: 1.87 GHz, 1.60 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1.60 GHz and 1.87 GHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 1.60 GHz. cpufreq stats: 1.87 GHz:72.79%, 1.60 GHz:27.21% (4691) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Changed in: linux Status: Unknown = Confirmed ** Changed in: linux Importance: Unknown = Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Bug watch added: Linux Kernel Bug Tracker #43091 http://bugzilla.kernel.org/show_bug.cgi?id=43091 ** Also affects: linux via http://bugzilla.kernel.org/show_bug.cgi?id=43091 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Bug still exists in mainline 3.4.rc2 kernel anton@smeg:~$uname -a Linux smeg.hursley.ibm.com 3.4.0-030400rc2-generic #201204072235 SMP Sun Apr 8 02:36:11 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux anton@smeg:~$cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009Report errors and bugs to cpuf...@vger.kernel.org, please.analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 600 MHz - 700 MHz available frequency steps: 700 MHz, 600 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 600 MHz and 700 MHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 600 MHz. cpufreq stats: 700 MHz:45.14%, 600 MHz:54.86% (343) ** Tags removed: needs-upstream-testing ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report at bugzilla.kernel.org [1]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug. If you are comfortable with opening a bug upstream, It would be great if you can report back the upstream bug number in this bug report. That will allow us to link this bug to the upstream report. [1] https://wiki.ubuntu.com/Bugs/Upstream/kernel ** Changed in: linux (Ubuntu) Status: Incomplete = Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
I've got the same problem on a Intel Core2 E6300 (http://ark.intel.com/products/27248/Intel-Core2-Duo-Processor-E6300 -%282M-Cache-1_86-GHz-1066-MHz-FSB%29). It's clocks are also limited to 600 and 700 Mhz. System is Ubuntu 11.10 with it's most recent kernel, all other symptoms also match this bug report. I would be happy if a solution came up, thanks for help. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.4kernel[1] (Not a kernel in the daily directory). Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag(Only that one tag, please leave the other tags). This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as Confirmed. Thanks in advance. http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-rc1-precise/ ** Tags added: needs-upstream-testing ** Changed in: linux (Ubuntu) Status: Confirmed = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Still exists in the latest kernel -21.34: $apt-cache policy linux-image-`uname -r` linux-image-3.2.0-21-generic: Installed: 3.2.0-21.34 ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed ** Tags removed: kernel-request-3.2.0-20.33 ** Tags added: bot-stop-nagging -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Changed in: linux (Ubuntu) Status: Incomplete = New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Thank you for taking the time to file a bug report on this issue. However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request. We have noted that there is a newer version of the development kernel than the one you last tested when this issue was found. Please test again with the newer kernel and indicate in the bug if this issue still exists or not. You can update to the latest development kernel by simply running the following commands in a terminal window: sudo apt-get update sudo apt-get dist-upgrade If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released. If you want this bot to quit automatically requesting kernel tests, add a tag named: bot-stop-nagging. Thank you for your help, we really do appreciate it. ** Changed in: linux (Ubuntu) Status: New = Confirmed ** Changed in: linux (Ubuntu) Status: Confirmed = Incomplete ** Tags added: kernel-request-3.2.0-20.33 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Colin: Re #3, that seems to have made no difference. With the grub flag set, the cpu still has the same speed. $cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpuf...@vger.kernel.org, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 600 MHz - 700 MHz available frequency steps: 700 MHz, 600 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 600 MHz and 700 MHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 700 MHz. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
Assuming I actually got the correct upstream kernel, it doesn't seem to have solved the problem: Let me know if there is another kernel you want me to try, or any other info to gather. Note that I can't run this kernel generally as dkms doesn't work so I don't get my nvidia modules. anton@smeg:~$cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpuf...@vger.kernel.org, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 600 MHz - 700 MHz available frequency steps: 700 MHz, 600 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 600 MHz and 700 MHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 700 MHz. cpufreq stats: 700 MHz:28.70%, 600 MHz:71.30% (650) analyzing CPU 1: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.0 us. hardware limits: 600 MHz - 700 MHz available frequency steps: 700 MHz, 600 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 600 MHz and 700 MHz. The governor ondemand may decide which speed to use within this range. current CPU frequency is 600 MHz. cpufreq stats: 700 MHz:18.00%, 600 MHz:82.00% (219) anton@smeg:~$uname -a Linux smeg.hursley.ibm.com 3.3.0-030300rc7-generic #201203101735 SMP Sat Mar 10 22:36:28 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux ** Tags removed: needs-upstream-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
I wonder if this is to do with a faulty BIOS frequency limit. To check this out can you try the following: Edit /etc/default/grub (you need to do this using root privilege) and change GRUB_CMDLINE_LINUX_DEFAULT=quiet splash to GRUB_CMDLINE_LINUX_DEFAULT=quiet splash processor.ignore_ppc=1 and then run: sudo update-grub and reboot. Maybe this will work around the issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
** Changed in: linux (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 962947] Re: CPU scaled back to very slow speed, cannot increase speed
This seems to be an issue with the devfreq governors. If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results. Thanks in advance. ** Changed in: linux (Ubuntu) Importance: Undecided = Medium ** Tags added: needs-upstream-testing ** Changed in: linux (Ubuntu) Status: Confirmed = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/962947 Title: CPU scaled back to very slow speed, cannot increase speed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/962947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
