* Uli Armbruster <uli.armbruster@xxxxxxxxxxxxxx> [10.11.2011 14:53]: > * Taylor Hedberg <tmhedberg@xxxxxxxxx> [10.11.2011 13:50]: > > Uli Armbruster, Thu 2011-11-10 @ 07:45:11+0100: > > > I can confirm this behavior, however I'm not sure if it's software > > > related. I have the impression that this happens here only if the > > > laptop is cold (e.g. because I carried it around outside in the cold > > > german autumn). But Taylor's describtion fits perfectly to the > > > behavior I have, so maybe it really is caused by the kernel. > > > > > > I have a 01:00.0 VGA compatible controller: ATI Technologies Inc RV350 > > > [Mobility Radeon 9600 M10] and use the radeon driver. > > > > Does the problem disappear if you downgrade the kernel? It certainly > > does for me. That would tell you whether it's hardware or software issue > > on your machine. > > I'll try to look into it. I also have the linux-rt kernel installed, which is still version 3.0.7. I'll tell you if it happens as well with this kernel. Ok here on my laptop it's definitely hardware-based, the backlight doesn't work in the first moment, when the laptop is cold. I just booted my cold laptop into 3.0.7 linux-rt and it happened there as well.
