<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Intel card (Coffeelake) short freezes (hang) after upgrade to kernel 5.3.4" href="https://bugs.freedesktop.org/show_bug.cgi?id=111919#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Intel card (Coffeelake) short freezes (hang) after upgrade to kernel 5.3.4" href="https://bugs.freedesktop.org/show_bug.cgi?id=111919">bug 111919</a> from <a class="email" href="mailto:freedesktop.org@ochotnicky.com" title="Stanislav Ochotnicky <freedesktop.org@ochotnicky.com>"> Stanislav Ochotnicky</a> <pre>Created <a href="attachment.cgi?id=145727" name="attach_145727" title="/sys/class/drm/card0/error output with i915.dmc_firmware_path=/dev/null">attachment 145727</a> <a href="attachment.cgi?id=145727&action=edit" title="/sys/class/drm/card0/error output with i915.dmc_firmware_path=/dev/null">[details]</a> /sys/class/drm/card0/error output with i915.dmc_firmware_path=/dev/null I have managed to reproduce again - even after upgrading kernel to 5.3.5 and adding i915.dmc_firmware_path=/dev/null kernel command line option. Attaching new output of /sys/class/drm/card0/error I haven't yet found an exact reproducer, but will try to dig. My current two leads/ideas are: * Related to suspend/resume (i.e. I don't remember seeing hang after fresh boot, only after suspend/resume cycle) * Related to IOMMU/2nd video card being assigned to a VM Both of the above might be wild goose chases at this point though.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>