* [Bug 19262] CPU0 locked at slower speed, regardless of governor
2010-09-28 19:08 [Bug 19262] New: CPU0 locked at slower speed, regardless of governor bugzilla-daemon
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From: bugzilla-daemon @ 2010-09-28 19:10 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
--- Comment #1 from Jason Lynch <aexoden@gmail.com> 2010-09-28 19:10:22 ---
Created an attachment (id=31742)
--> (https://bugzilla.kernel.org/attachment.cgi?id=31742)
sysfs information
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From: bugzilla-daemon @ 2010-09-28 19:11 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
--- Comment #2 from Jason Lynch <aexoden@gmail.com> 2010-09-28 19:11:26 ---
Created an attachment (id=31752)
--> (https://bugzilla.kernel.org/attachment.cgi?id=31752)
dmesg with cpufreq.debug=7
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From: bugzilla-daemon @ 2010-09-28 19:11 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
Jason Lynch <aexoden@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #31732|application/octet-stream |text/plain
mime type| |
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From: bugzilla-daemon @ 2010-09-30 1:30 UTC (permalink / raw)
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https://bugzilla.kernel.org/show_bug.cgi?id=19262
Jason Lynch <aexoden@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #31742|application/octet-stream |text/plain
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2010-09-28 19:08 [Bug 19262] New: CPU0 locked at slower speed, regardless of governor bugzilla-daemon
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From: bugzilla-daemon @ 2010-09-30 1:30 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
Jason Lynch <aexoden@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #31752|application/octet-stream |text/plain
mime type| |
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2010-09-28 19:08 [Bug 19262] New: CPU0 locked at slower speed, regardless of governor bugzilla-daemon
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From: bugzilla-daemon @ 2010-09-30 8:51 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
Thomas Renninger <trenn@suse.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |cpufreq@vger.kernel.org,
| |trenn@suse.de
AssignedTo|cpufreq@vger.kernel.org |trenn@suse.de
--- Comment #3 from Thomas Renninger <trenn@suse.de> 2010-09-30 08:51:40 ---
Looks like the passive temperature threshold is exceeded for CPU0.
Hm, typically there is one thermal sensor/device connected to all CPUs, but if
this is related to the problem, CPU0 would have its own thermal device.
Can you provide:
for x in /proc/acpi/thermal_zone/*/*;do
echo $x
cat $x
echo
done
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^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug 19262] CPU0 locked at slower speed, regardless of governor
2010-09-28 19:08 [Bug 19262] New: CPU0 locked at slower speed, regardless of governor bugzilla-daemon
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From: bugzilla-daemon @ 2010-09-30 9:46 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
--- Comment #4 from Jason Lynch <aexoden@gmail.com> 2010-09-30 09:46:37 ---
Here is the requested information:
/proc/acpi/thermal_zone/THRM/cooling_mode
0 - Active; 1 - Passive
/proc/acpi/thermal_zone/THRM/polling_frequency
<polling disabled>
/proc/acpi/thermal_zone/THRM/state
state: ok
/proc/acpi/thermal_zone/THRM/temperature
temperature: 20 C
/proc/acpi/thermal_zone/THRM/trip_points
critical (S5): 255 C
passive: 0 C: tc1=4 tc2=3 tsp=60 devices=CPU0
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^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug 19262] CPU0 locked at slower speed, regardless of governor
2010-09-28 19:08 [Bug 19262] New: CPU0 locked at slower speed, regardless of governor bugzilla-daemon
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From: bugzilla-daemon @ 2010-09-30 12:35 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
Thomas Renninger <trenn@suse.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|cpufreq |Power-Thermal
AssignedTo|trenn@suse.de |acpi_power-thermal@kernel-b
| |ugs.osdl.org
Product|Power Management |ACPI
--- Comment #5 from Thomas Renninger <trenn@suse.de> 2010-09-30 12:35:45 ---
... and this is the bug, probably BIOS related:
/proc/acpi/thermal_zone/THRM/trip_points
passive: 0 C: tc1=4 tc2=3 tsp=60 devices=CPU0
Please also attach dmesg and acpidump output.
The param to workaround this issue is:
thermal.psv = 50
to e.g. let the CPU get throttled at 50 C.
There already is a blacklist in drivers/acpi/thermal.c:
static struct dmi_system_id thermal_dmi_table[] __initdata = {
...
{
.callback = thermal_psv,
.ident = "AOpen i915GMm-HFS",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
},
},
Also attach dmidecode, if we do not find a generic kernel workaround/fix the
BIOS can get blacklisted to not use the passive trip point by default.
Reassigning to ACPI component -> this is an acpi problem.
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From: bugzilla-daemon @ 2010-09-30 21:23 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
--- Comment #6 from Jason Lynch <aexoden@gmail.com> 2010-09-30 21:23:06 ---
Created an attachment (id=32122)
--> (https://bugzilla.kernel.org/attachment.cgi?id=32122)
acpidump
I had previously attached dmesg. If there's something I missed, or if I didn't
do the acpidump correctly (just ran acpidump with no parameters), let me know.
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2010-10-01 15:12 ` [Bug 19262] CPU0 locked at slower speed, regardless of governor on IP35 Pro(Intel P35-ICH9R) bugzilla-daemon
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From: bugzilla-daemon @ 2010-09-30 21:24 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
--- Comment #7 from Jason Lynch <aexoden@gmail.com> 2010-09-30 21:24:29 ---
Created an attachment (id=32132)
--> (https://bugzilla.kernel.org/attachment.cgi?id=32132)
dmidecode
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From: bugzilla-daemon @ 2010-10-01 15:12 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
Thomas Renninger <trenn@suse.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |DOCUMENTED
Summary|CPU0 locked at slower |CPU0 locked at slower
|speed, regardless of |speed, regardless of
|governor |governor on IP35 Pro(Intel
| |P35-ICH9R)
--- Comment #8 from Thomas Renninger <trenn@suse.de> 2010-10-01 15:12:07 ---
Best is you go with the mentioned boot param workaround.
There is something rather fishy with the implementation of the thermal trip
points. There are some iasl errors/warnings which point to thermal/temp:
DSDT.dsl 5685: Store (GAHC (Arg0, Arg1), Local4)
Warning 1093 - ^ Called method may not always return a value
DSDT.dsl 5723: Method (GAHC, 2, NotSerialized)
Warning 1088 - ^ Not all control paths return a value (GAHC)
DSDT.dsl 5798: Store (GAHS (0x00), Local6)
Error 4061 - Called method returns no value ^
The code there does not make much sense to me:
- Passive cooling device only CPU0
- Quite some storing of the same things:
GAHC():
Store (0x01, DTAP)
Stall (0x7F)
Store (0x6C, DTAP)
Stall (0x7F)
Store (DTAP, Local5)
Stall (0x7F)
Store (DTAP, Local6)
Stall (0x7F)
Store (DTAP, Local7)
-> Ok, there is IO behind, still this cannot make much sense...
The temperature should also be 20C fixed, because of
Method (GAHS, 1, NotSerialized)
{
}
_TMP():
Store (GAHS (0x00), Local6)
And (Local6, 0x01, Local6)
If (LEqual (Local6, 0x01)) {..}
etc., etc....
The thermal ACPI stuff is really totally messed up on this system, best is to
use thermal.psv=-1 (afaik) to disable passive cooling.
-> Closing resolved documented, not much that can be done from OS side.
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From: bugzilla-daemon @ 2010-10-01 15:15 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
--- Comment #9 from Thomas Renninger <trenn@suse.de> 2010-10-01 15:15:52 ---
Eh, you might want to write a tiny a patch to blacklist this machine to not use
passive cooling automatically as described in comment #5 and send it to the
acpi list. You can read out needed info from dmidecode.
If you do this, please let me know and the bug can be set fixed.
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From: bugzilla-daemon @ 2010-10-19 0:55 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
Zhang Rui <rui.zhang@intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rui.zhang@intel.com
--- Comment #10 from Zhang Rui <rui.zhang@intel.com> 2010-10-19 00:54:57 ---
As the _TMP returns fixed value, I suggest Jason to either update the BIOS to
see if the situation is improved, or disable the ACPI thermal driver because it
will never work with this BIOS.
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From: bugzilla-daemon @ 2010-12-09 21:02 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=19262
Len Brown <lenb@kernel.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |CLOSED
CC| |lenb@kernel.org
Component|Power-Thermal |BIOS
AssignedTo|acpi_power-thermal@kernel-b |acpi_bios@kernel-bugs.osdl.
|ugs.osdl.org |org
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