Public bug reported:
Binary package hint: gnome-power-manager
Distro:
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"
Package:
gnome-power-manager
Version:
2.21.92-0ubuntu1
Problem:
My laptop computer (Clevo D400S / Intel P4 1.8GHz / SiS 650 Chipset) has
strange behaviour in Ubuntu 7.10 and 8.04 when suspending. I have
experienced lockups on some resumes usually 1 of 3 and narrowed the
behaviour by extensive testing and here is how I can reproduce it:
1. I startup the book on battery;
2. I suspend after loaded to desktop;
3. Then when suspended I plug in the AC;
4. I resume it;
5. Everything goes fine;
6. And here if I unplug the AC my book locksup;
There is no output in /var/log/syslog or kernlog, and the suspend log
goes normal.
I have tested this with the stock 7.10 kernel, as well as with Debian's
2.6.24 kernel and same story repeats.
What I discovered is that if I kill gnome-power-manager after step 5 and
before step 6 - there is no lockup and
system continues to function properly. If I restart it after killing it -
everything continues to work properly. I decided that I will try to upgrade to
8.04 and see if this has been fixed - and indeed there was no such problem with
2.6.24 , but gnome-power-manager didn't measure battery at all only #acpi did.
Then I started 8.04 with the 2.6.22 kernel and gnome-power-manager measured
everything fine but the initial problem reappeared.
Now I am not totally sure that the bug is in gnome-power-manager or in
the connection between that and the acpi system or in the kernel itself.
But it looks like the rest of the system works fine if gnome-power-
manager doesnt interfere too much with it (8.04 + 2.6.24). I hope it is
an isolated problemon my machine - I will just execute a script to kill
and restart g-p-m on resume but if it is a bug it needs to be fixed imo.
** Affects: gnome-power-manager (Ubuntu)
Importance: Undecided
Status: New
--
Lockup on cable unplugged
https://bugs.launchpad.net/bugs/198144
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