<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [amdgpu] "No EDID firmware found on connector" when display forced on and EDID file provided" href="https://bugs.freedesktop.org/show_bug.cgi?id=107414#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [amdgpu] "No EDID firmware found on connector" when display forced on and EDID file provided" href="https://bugs.freedesktop.org/show_bug.cgi?id=107414">bug 107414</a> from <a class="email" href="mailto:tpearson@raptorengineering.com" title="Timothy Pearson <tpearson@raptorengineering.com>"> Timothy Pearson</a> <pre>I'm also seeing this on 4.20 with amdgpu. In my case though it also triggers a problem with amdgpu, a problem that would not be hit if the options were honored correctly: [ 7.843957] [drm] Display Core initialized with v3.1.68! [ 7.844448] [drm] forcing DP-3 connector on [ 11.785325] [drm:emulated_link_detect [amdgpu]] *ERROR* Failed to read EDID [ 11.785372] [drm] forcing DP-4 connector on [ 11.805994] [drm] Got external EDID base block and 1 extension from "edid/edid.bin" for connector "DP-4" [ 11.822809] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 11.822825] [drm] Driver supports precise vblank timestamp query. [ 11.849368] [drm] UVD and UVD ENC initialized successfully. [ 11.950326] [drm] VCE initialized successfully. [ 11.950636] [drm:amdgpu_dm_connector_mode_valid [amdgpu]] *ERROR* No EDID firmware found on connector: DP-3 ,forcing to OFF! [ 11.950731] [drm:amdgpu_dm_connector_mode_valid [amdgpu]] *ERROR* No EDID firmware found on connector: DP-3 ,forcing to OFF! [ 11.950782] ------------[ cut here ]------------ [ 11.950802] kernel BUG at mm/slub.c:294 Kernel command line: amdgpu.dc=1 drm_kms_helper.edid_firmware=DP-3:edid/edid.bin drm_kms_helper.edid_firmware=DP-4:edid/edid.bin video=DP-3:1920x1080D video=DP-4:1920x1080D This is for a video broadcast system that "features" output sinks being connected and disconnected quite frequently; this should be handled seamlessly but Linux is not honoring the options here.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>