<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Kernel DRM/i915 init sends eDP panel into self-test loop" href="https://bugs.freedesktop.org/show_bug.cgi?id=94338#c15">Comment # 15</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Kernel DRM/i915 init sends eDP panel into self-test loop" href="https://bugs.freedesktop.org/show_bug.cgi?id=94338">bug 94338</a> from <a class="email" href="mailto:infernix@infernix.net" title="infernix@infernix.net">infernix@infernix.net</a> <pre>I did a git bisect on linus' master tree and found this commit to be the cause of the selftest: > commit 4b7ab5fca1976a53d59ef1558ddb06ba69fab356 > Author: Animesh Manna <<a href="mailto:animesh.manna@intel.com">animesh.manna@intel.com</a>> > Date: Wed Aug 26 01:36:05 2015 +0530 > > drm/i915/skl: Added a check for the hardware status of csr fw before loading. Before this commit, the panel goes black/blank/off at kernel boot + i915/drm init; after it, the panel enters the red/green/blue selftest loop. > <vsyrjala> infernix: weird. can you remove all dmc firmware files from /lib/firmware/i915 and try again with nightly? With patch v2 reverted and on current drm nightly (a838d7e77d17a65bc949f59d32d87ba5b9770816) with *only* the following in /lib/firmware/i915: -rw-r--r-- 1 root root 109636 Feb 24 09:58 skl_guc_ver1_1059.bin lrwxrwxrwx 1 root root 21 Feb 24 09:58 skl_guc_ver1.bin -> skl_guc_ver1_1059.bin -rw-r--r-- 1 root root 128320 Feb 24 09:58 skl_guc_ver4_3.bin lrwxrwxrwx 1 root root 18 Feb 24 09:58 skl_guc_ver4.bin -> skl_guc_ver4_3.bin I still get the self-test pattern, despite this: [ 5.245675] i915 0000:00:02.0: Direct firmware load for i915/skl_dmc_ver1.bin failed with error -2 [ 5.245679] i915 0000:00:02.0: Failed to load DMC firmware [<a href="https://01.org/linuxgraphics/intel-linux-graphics-firmwares">https://01.org/linuxgraphics/intel-linux-graphics-firmwares</a>], disabling runtime power management.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>