<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [SNB, IVB] Page flips hang indefinitely, apparently waiting for mmio writes that never happen" href="https://bugs.freedesktop.org/show_bug.cgi?id=75502#c20">Comment # 20</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [SNB, IVB] Page flips hang indefinitely, apparently waiting for mmio writes that never happen" href="https://bugs.freedesktop.org/show_bug.cgi?id=75502">bug 75502</a> from <a class="email" href="mailto:simon@farnz.org.uk" title="Simon Farnsworth <simon@farnz.org.uk>"> Simon Farnsworth</a> <pre>It doesn't print after the freeze. I can see that dmesg covers me back to boot time on the system, but "dmesg | grep -i busy" shows nothing, even with your patch in place. Xorg is logging lots of pairs of [ 6527.065] (WW) intel(0): Page flip failed: Device or resource busy [ 6527.068] (WW) intel(0): flip queue failed: Device or resource busy # cat /sys/kernel/debug/dri/0/i915_gem_pageflip Flip queued on pipe A (plane A) Flip queued on frame 364351, now 541203 Stall check enabled, 1 prepares Old framebuffer gtt_offset 0x02f44000 New framebuffer gtt_offset 0x0093c000 MMIO update completed? 0 No flip due on pipe B (plane B) is obviously stuck.</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> </ul> </body> </html>