[Bugme-new] [Bug 11331] New: Fan speed setting reset after suspend to disk/ram on Thinkpad X31
bugme-daemon at bugzilla.kernel.org
bugme-daemon at bugzilla.kernel.org
Thu Aug 14 06:45:44 PDT 2008
http://bugzilla.kernel.org/show_bug.cgi?id=11331
Summary: Fan speed setting reset after suspend to disk/ram on
Thinkpad X31
Product: ACPI
Version: 2.5
KernelVersion: 2.6.26-1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Sleep-Wake
AssignedTo: acpi_power-sleep-wake at kernel-bugs.osdl.org
ReportedBy: richih.mailinglist at gmail.com
Distribution: Debian unstable
Hardware Environment: Thinkpad X31
Software Environment: Debian unstable
Problem Description:
After waking the system from suspend to disk/ram, the fan speed is reset to the
default value. As I understand things, the value should be cached and re-set to
what I last set it to.
Steps to reproduce:
# echo "options thinkpad_acpi fan_control=1" >> /etc/modprobe.d/options
# shutdown -r now
# echo level 7 >! /proc/acpi/ibm/fan #fan will spin on fastest level, you will
hear this
# cat /proc/acpi/ibm/fan
status: enabled
speed: 4107
level: 7
commands: level <level> (<level> is 0-7, auto, disengaged, full-speed)
commands: enable, disable
commands: watchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))
commands: speed <speed> (<speed> is 0-65535)
# s2ram || s2disk
press Fn-F4 or power button to wake system
# cat /proc/acpi/ibm/fan
status: enabled
speed: 0
level: auto
commands: level <level> (<level> is 0-7, auto, disengaged, full-speed)
commands: enable, disable
commands: watchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))
commands: speed <speed> (<speed> is 0-65535)
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