<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - System hangs randomly with error message: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle" href="https://bugs.freedesktop.org/show_bug.cgi?id=75394#c126">Comment # 126</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - System hangs randomly with error message: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle" href="https://bugs.freedesktop.org/show_bug.cgi?id=75394">bug 75394</a> from <a class="email" href="mailto:caizp2008@gmail.com" title="caizp <caizp2008@gmail.com>"> caizp</a> <pre>hi ，I think I had already solved, have been tested for 3 days, not hanging to death, the same test before will be out within 15 minutes.I also use the function of DRI, performance is little. I added /etc/X11/xorg.conf.d/20-intel.conf Section "Device" Identifier "Intel Graphics" Driver "intel" Option "DRI" "True" Option "TearFree" "true" #Option "AccelMethod" "sna" Option "VSync" "False" Option "PageFlip" "False" Option "RelaxedFencing" "False" Option "SwapbuffersWait" "False" EndSection and my kernel cmd parameters: Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.13.0-49-generic root=UUID=7ea7f693-5856-4b3d-9271-55a9061950e1 ro mem=2G i915.semaphores=1 intel_idle.max_cstate=1 i915.enable_rc6=0 But Dmesg info when there also with { [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle } again , but the system did not hang dead, I don't know why, which friends with same problem can try that again.</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>