Package: pm-utils
Version: 0.99.2-3
Severity: normal
Tags: patch
I am using the convervative cpufreq governor for CPU frequency scaling in a
Core 2 Duo laptop. pm-suspend does not correctly restore the cpufreq governor
after suspend/resume.
The scaling governor is not independent for each core in multicore systems.
The hibernate-cpufreq function in /usr/lib/pm-utils/sleep.d/94cpufreq
sets the governor to performance after saving the previous governor to
/var/run/pm-suspend. When the governor for the first core is set to
performance second cpu core is affected. We end up with
export cpu0_governor_STATE=conservative
export cpu1_governor_STATE=performance
in /var/run/pm-suspend. As a result of this the thaw_cpufreq function does not
correctly restore the governor(s) to conservative. The following patch fixes
the problem.
--- 94cpufreq 2007-11-24 03:35:58.000000000 +0200
+++ 94cpufreq-patched 2007-11-24 03:35:52.000000000 +0200
@@ -11,6 +11,8 @@
[ -f $x/cpufreq/scaling_governor ] || continue
savestate ${x}_governor $(cat $x/cpufreq/scaling_governor)
+ done
+ for x in $(ls -1) ; do
sh -c "echo performance > $x/cpufreq/scaling_governor"
>/dev/null 2>&1
done
popd >/dev/null 2>&1
-- System Information:
Debian Release: lenny/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.22-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=el_GR.UTF-8, LC_CTYPE=el_GR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages pm-utils depends on:
ii powermgmt-base 1.29 Common utils and configs for power
Versions of packages pm-utils recommends:
ii hal 0.5.10-2 Hardware Abstraction Layer
ii radeontool 1.5-5 utility to control ATI Radeon back
pn uswsusp <none> (no description available)
ii vbetool 0.7-1.1 run real-mode video BIOS code to a
-- no debconf information
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