http://bugzilla.kernel.org/show_bug.cgi?id=13278
Summary: Suspend to ram corrupts laptop fan
Product: ACPI
Version: 2.5
Kernel Version: 2.6.29.3 Stable
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Fan
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Latest working kernel version: N/A
Distribution: Gentoo
Hardware Environment: Toshiba Satellite L300-214
Software Environment:
GCC version 4.1.2 (Gentoo 4.1.2 p1.0.2)
Binutils 2.18-r3
Grub (GNU GRUB 0.97)
Architecture: x86_64
Grub Kernel additional boot flags: acpi_osi="Linux"
Kernel ACPI compiled modules:
ACPI_TOSHIBA (Toshiba Laptop Extras)
Selected values from /proc/acpi:
# grep . thermal_zone/*/* | head -n11; echo; grep . fan/*/*
thermal_zone/THRM/cooling_mode:0 - Active; 1 - Passive
thermal_zone/THRM/polling_frequency:<polling disabled>
thermal_zone/THRM/state:state: ok
thermal_zone/THRM/temperature:temperature: 48 C
thermal_zone/THRM/trip_points:critical (S5): 110 C
thermal_zone/THRM/trip_points:passive: 110 C: tc1=2 tc2=5
tsp=300 devices=CPU0 CPU1
thermal_zone/THRM/trip_points:active[0]: 70 C: devices= FAN
status: on
Problem Description:
After resuming from suspend to ram (previously suspending through 'echo mem >
/sys/power/state') the system's fan doesn't turn on or does rotate but very
slowly and doesn't speed up with the temperature increase. I've tried to wait
and observed the temperature from 'sensors', I reached 70-75C which made me
turn off the laptop quickly to cool it down.
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