https://bugs.freedesktop.org/show_bug.cgi?id=56139
--- Comment #51 from Alexandre Demers <alexandre.f.demers at gmail.com> --- (In reply to comment #50) > (In reply to comment #49) > > What if the problem is not from this code, but underneath? I'll try to > > suspend and resume without having Xorg running. Would that help in any way? > > If the commit you bisected is actually the culprit, this is an issue with > the memory controller and the displays on the GPU. When we reprogram the > memory controller we need to stop all the GPU memory clients. We used to > disable the display controllers but this caused additional flicker on boot > up and caused hangs on some cards. So we switched to the current method > which was recommended by the hardware team. This avoids the flicker by just > stopping the MC interface in the displays but leaving them enabled and also > fixes hangs related to this on a number of chips. Unfortunately, it seems > to cause other problems in certain causes. Since I had just installed kernel 3.9.0-rc2, I tried a suspend and resume cycle. As expected, it end up frozen (I saw some text from the console, Xorg/Gnome tried to display something, couldn't, reset, couldn't, reset and froze). I then rebooted and limited the runlevel to 2 (no Xorg in the way). >From the command line, I launched a pm-suspend. Once I woke up my computer, everything was responsive as expected. Does it help in anyway? -- You are receiving this mail because: You are the assignee for the bug. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20130311/b3f04470/attachment.html>
