* [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore
@ 2012-10-13 1:56 bugzilla-daemon
2012-10-13 1:57 ` [Bug 48721] " bugzilla-daemon
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: bugzilla-daemon @ 2012-10-13 1:56 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=48721
Summary: acpi_cpufreq can't change CPU clock anymore
Product: Power Management
Version: 2.5
Kernel Version: 3.6.1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: cpufreq
AssignedTo: cpufreq@vger.kernel.org
ReportedBy: mavoga@gmail.com
Regression: Yes
Created an attachment (id=83121)
--> (https://bugzilla.kernel.org/attachment.cgi?id=83121)
3.5.5 kernel: output of 'grep -r . /sys/devices/system/cpu/ 2>/dev/null'
On my laptop (a Clevo W150HRM with an i7 2720QM CPU) I'm currently running
Debian wheezy/sid with latest aptosid (3.6-1.slh.3) amd64 kernel: after
switching from 3.5.5 to 3.6 kernel I noticed the idle temperatures suddenly
increased by ~10°C with no apparent activity on the system.
The temperature increase, together with sysfs scaling_cur_freq and
cpuinfo_cur_freq values seem to support my suspect of a cpufreq bug: the
ondemand governor doesn't seem able to modulate the CPU clock anymore. While
the scaling_cur_freq value varies depending on system load just as expected,
the cpuinfo_cur_freq value remains stuck at (or over because of turbo boost)
the maximum CPU frequency, just like the performance governor was set.
I could get the same frequency readings with cpufreq-info, turbostat and i7z:
the CPU frequency never decreases under 2.2GHz.
Furthermore, no cpufreq-set setting seems able to lower the idle frequency in
any way, even by changing governor, and a test 3.6.1 vanilla kernel I compiled
for testing purposes showed the same behavior.
As soon as I reboot to a 3.5.5 kernel cpuinfo_cur_freq begin to follow
scaling_cur_freq just as expected, and the idle temps decrease back by over
10°C.
--
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug 48721] acpi_cpufreq can't change CPU clock anymore 2012-10-13 1:56 [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore bugzilla-daemon @ 2012-10-13 1:57 ` bugzilla-daemon 2012-10-13 2:03 ` bugzilla-daemon ` (5 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: bugzilla-daemon @ 2012-10-13 1:57 UTC (permalink / raw) To: cpufreq https://bugzilla.kernel.org/show_bug.cgi?id=48721 --- Comment #1 from Maurizio Avogadro <mavoga@gmail.com> 2012-10-13 01:57:21 --- Created an attachment (id=83131) --> (https://bugzilla.kernel.org/attachment.cgi?id=83131) 3.6.1 kernel: output of 'grep -r . /sys/devices/system/cpu/ 2>/dev/null' -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 48721] acpi_cpufreq can't change CPU clock anymore 2012-10-13 1:56 [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore bugzilla-daemon 2012-10-13 1:57 ` [Bug 48721] " bugzilla-daemon @ 2012-10-13 2:03 ` bugzilla-daemon 2012-10-13 2:03 ` bugzilla-daemon ` (4 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: bugzilla-daemon @ 2012-10-13 2:03 UTC (permalink / raw) To: cpufreq https://bugzilla.kernel.org/show_bug.cgi?id=48721 Maurizio Avogadro <mavoga@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #83121|application/octet-stream |text/plain mime type| | -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 48721] acpi_cpufreq can't change CPU clock anymore 2012-10-13 1:56 [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore bugzilla-daemon 2012-10-13 1:57 ` [Bug 48721] " bugzilla-daemon 2012-10-13 2:03 ` bugzilla-daemon @ 2012-10-13 2:03 ` bugzilla-daemon 2012-10-13 2:08 ` bugzilla-daemon ` (3 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: bugzilla-daemon @ 2012-10-13 2:03 UTC (permalink / raw) To: cpufreq https://bugzilla.kernel.org/show_bug.cgi?id=48721 Maurizio Avogadro <mavoga@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #83131|application/octet-stream |text/plain mime type| | -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 48721] acpi_cpufreq can't change CPU clock anymore 2012-10-13 1:56 [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore bugzilla-daemon ` (2 preceding siblings ...) 2012-10-13 2:03 ` bugzilla-daemon @ 2012-10-13 2:08 ` bugzilla-daemon 2012-10-13 2:29 ` bugzilla-daemon ` (2 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: bugzilla-daemon @ 2012-10-13 2:08 UTC (permalink / raw) To: cpufreq https://bugzilla.kernel.org/show_bug.cgi?id=48721 Maurizio Avogadro <mavoga@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Kernel Version|3.6.1 |3.6.0+ -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 48721] acpi_cpufreq can't change CPU clock anymore 2012-10-13 1:56 [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore bugzilla-daemon ` (3 preceding siblings ...) 2012-10-13 2:08 ` bugzilla-daemon @ 2012-10-13 2:29 ` bugzilla-daemon 2012-10-13 7:17 ` bugzilla-daemon 2012-10-14 12:12 ` bugzilla-daemon 6 siblings, 0 replies; 8+ messages in thread From: bugzilla-daemon @ 2012-10-13 2:29 UTC (permalink / raw) To: cpufreq https://bugzilla.kernel.org/show_bug.cgi?id=48721 --- Comment #2 from Maurizio Avogadro <mavoga@gmail.com> 2012-10-13 02:29:44 --- Created an attachment (id=83151) --> (https://bugzilla.kernel.org/attachment.cgi?id=83151) 3.6.1 kernel config -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 48721] acpi_cpufreq can't change CPU clock anymore 2012-10-13 1:56 [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore bugzilla-daemon ` (4 preceding siblings ...) 2012-10-13 2:29 ` bugzilla-daemon @ 2012-10-13 7:17 ` bugzilla-daemon 2012-10-14 12:12 ` bugzilla-daemon 6 siblings, 0 replies; 8+ messages in thread From: bugzilla-daemon @ 2012-10-13 7:17 UTC (permalink / raw) To: cpufreq https://bugzilla.kernel.org/show_bug.cgi?id=48721 onorua <onorua@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |onorua@gmail.com --- Comment #3 from onorua <onorua@gmail.com> 2012-10-13 07:17:29 --- I confirm the same bahavior on 3.6.2 as well. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 48721] acpi_cpufreq can't change CPU clock anymore 2012-10-13 1:56 [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore bugzilla-daemon ` (5 preceding siblings ...) 2012-10-13 7:17 ` bugzilla-daemon @ 2012-10-14 12:12 ` bugzilla-daemon 6 siblings, 0 replies; 8+ messages in thread From: bugzilla-daemon @ 2012-10-14 12:12 UTC (permalink / raw) To: cpufreq https://bugzilla.kernel.org/show_bug.cgi?id=48721 Alan <alan@lxorguk.ukuu.org.uk> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |alan@lxorguk.ukuu.org.uk Component|cpufreq |Power-Processor AssignedTo|cpufreq@vger.kernel.org |acpi_power-processor@kernel | |-bugs.osdl.org Product|Power Management |ACPI -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2012-10-14 12:12 UTC | newest] Thread overview: 8+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2012-10-13 1:56 [Bug 48721] New: acpi_cpufreq can't change CPU clock anymore bugzilla-daemon 2012-10-13 1:57 ` [Bug 48721] " bugzilla-daemon 2012-10-13 2:03 ` bugzilla-daemon 2012-10-13 2:03 ` bugzilla-daemon 2012-10-13 2:08 ` bugzilla-daemon 2012-10-13 2:29 ` bugzilla-daemon 2012-10-13 7:17 ` bugzilla-daemon 2012-10-14 12:12 ` bugzilla-daemon
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).