On Mon, Dec 26, 2011 at 01:43:37AM +0100, Kai Krakow wrote: > Hello! > > I found my system freeze mostly during starting up X and KDE. Sometimes it > works for some minutes, sometimes it freezes immediatly. When the freeze > happens, everything is dead (even the reset button does not work, I need to > power cycle). > > I was using libdrm-2.4.27 before, system freeze showed some colorful lines > running down at the left side of the screen after turning black, then some > blue flicker in the top 10% of the the screen. System no longer reacts, > network is dead too. > > Now, using libdrm-2.4.29, the system freeze shows other effects: Screen does > not turn black but starts to flicker and occassionally moves some > centimeters to the right (wrapping the right-most part to the left) for a > very short time, then jumping back with some distortions. The rest is the > same: Complete freeze, even reset button stops working. > > Before finding out about the libdrm difference, I tried other intel xorg > driver versions to no avail, I tried with SNA support and without. No > difference. I'm now back to intel xorg driver 2.17.0. > > I read about the semaphores feature, turned it off: No change. Sometimes the > system even freezes before displaying the framebuffer splash. > > I didn't have such issues with early 3.2 rcs (afair), and not with 3.1 > kernels. After some digging through google I've found you enabled RC6 in > 3.2. I disabled it now, and my system runs wonderfully. > > Do you need any specs? I'd be happy to send these. The system is a Z68 Pro > board with Sandybridge i5-2500K processor, 8 GB of RAM and UEFI firmware. > Looks like RC6 is not ready for roll-out, at least on some mainboards. > > Regards, > Kai Can you please try this kernel: git://people.freedesktop.org/~bwidawsk/drm-intel context-support You probably need to manually enable rc6. We were given some hint that we may not be setting up contexts properly. The above branch should create a default context (amongst other stuff which won't happen in this case). Thanks. Ben
