<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [v4.13 ARCH] GPU HANG: DMAR: DRHD: handling fault status reg 3 (arch reverted the use of intel_iommu=igfx_off)" href="https://bugs.freedesktop.org/show_bug.cgi?id=103076#c46">Comment # 46</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [v4.13 ARCH] GPU HANG: DMAR: DRHD: handling fault status reg 3 (arch reverted the use of intel_iommu=igfx_off)" href="https://bugs.freedesktop.org/show_bug.cgi?id=103076">bug 103076</a> from <a class="email" href="mailto:carstenmattner@gmail.com" title="Carsten Mattner <carstenmattner@gmail.com>"> Carsten Mattner</a> <pre>(In reply to Carsten Mattner from <a href="show_bug.cgi?id=103076#c45">comment #45</a>) > (In reply to Carsten Mattner from <a href="show_bug.cgi?id=103076#c44">comment #44</a>) > > (In reply to Carsten Mattner from <a href="show_bug.cgi?id=103076#c43">comment #43</a>) > > > (In reply to Carsten Mattner from <a href="show_bug.cgi?id=103076#c42">comment #42</a>) > > > > With 4.13.2 entering Xorg and leaving results in a failed atomic flip which > > > > then 2/3 of the time makes it impossible to restart the kernel cleanly. > > > > > > > > This doesn't happen if a Wayland compositor is used and exited. > > > > > > It's this atomic error: "flip_done timed out" when you exit Xorg. > > > > > > There have been other updates in Arch Linux and if I try hard I can > > > reproduce it on 4.9.61 as well now. > > > > Adding video=SVIDEO-1:d to the kernel cmdline seems to fix the flip_done > > hang. > > Ivan, coming back to your suggestion and explicitly enabling semaphores and > disabling framebuffer compression, rc6 sleep mode and (I don't know what it > is) psr, in addition to video=SVIDEO-1:d seems to be working better than the > other tests so far on 4.13.12. > > Still testing this: > > video=SVIDEO-1:d plymouth.enable=0 i915.semaphores=1 i915.enable_rc6=0 > i915.enable_psr=0 intel_iommu=igfx_off > > I don't think plymouth.enable=0 is needed on Arch Linux since I think it's a > Red Hat graphical boot system, isn't it? I mean it doesn't hurt and is > ignored, but I had to ask. It took almost 19 hours, but I was able to provoke the RCS0 hang. The flags seem to certainly hide the regression(s) well enough that one might possibly get a work day's worth of use of intel-drm, if one follows a strict reboot once or twice a day routine.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>