<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - On kernel 4.1.0 with HD Graphics 5500, GPU hangs at boot time before Xorg started" href="https://bugs.freedesktop.org/show_bug.cgi?id=91152#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - On kernel 4.1.0 with HD Graphics 5500, GPU hangs at boot time before Xorg started" href="https://bugs.freedesktop.org/show_bug.cgi?id=91152">bug 91152</a> from <a class="email" href="mailto:sami.liedes@iki.fi" title="Sami Liedes <sami.liedes@iki.fi>"> Sami Liedes</a> <pre>Created <a href="attachment.cgi?id=116828" name="attach_116828" title="/sys/class/drm/card0/error with i915.enable_execlists=0; bzip2 compressed">attachment 116828</a> <a href="attachment.cgi?id=116828&action=edit" title="/sys/class/drm/card0/error with i915.enable_execlists=0; bzip2 compressed">[details]</a> /sys/class/drm/card0/error with i915.enable_execlists=0; bzip2 compressed With i915.enable_execlists=0, I get a single "[drm] stuck on render ring"/GPU hang at boot. With intel_iommu=igfx_off, I see no GPU hangs and Xorg starts. enable_execlists=0 case: [ 7.723370] [drm] stuck on render ring [ 7.724052] [drm] GPU HANG: ecode 8:0:0x00dfffff, reason: Ring hung, action: reset [ 7.724081] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [ 7.724113] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 7.724145] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [ 7.724177] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [ 7.724209] [drm] GPU crash dump saved to /sys/class/drm/card0/error [ 7.725348] drm/i915: Resetting chip after gpu hang Contents of /sys/class/drm/card0/error with enable_execlists=0 attached.</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>