On 20 June 2014 02:09, Daniel Vetter <daniel@xxxxxxxx> wrote: > On Wed, Jun 18, 2014 at 12:14:55PM -0400, Theodore Ts'o wrote: >> Is this a known problem? >> >> On my T540p, occasionally the display will go black and then be >> completely locked. One time when this happened, the display started >> glitching and tearing (like what you might see if an analog display had >> a loose connector and it was being wiggled) when the system locked up, >> but the at least 75% of the time when the bug manifests, the screen goes >> black instead. >> >> This appears to only happen when the system is running on battery --- it >> doesn't seem to manifest if I'm plugged into the AC mains. And I've >> been typing an e-mail message when the system locks up, so I don't think >> it's related to DPMS or the screen saver kicking in. >> >> I can try to bisect this regression (3.15 didn't have this problem), but >> I thought I would ask first if this was a known problem. I don't know >> for certain that it's an i915 bug, but the symptoms do somewhat point in >> that direction, especially the display glitches. > > Doesn't ring a bell, but can you please boot with drm.debug=0xe and attach > dmesg here so we know what kind of hardware you have? Also any dying > breadths over netconsole or similar? Can't hurt to check that before doing > the bisect. > t540p are haswell. Dave. _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
