Skip to content

Resume fail with drm.edid_firmware

Brief summary of the problem:

My external monitor has an invalid EDID. So I use drm.edid_firmware kernel parameter to fix this. But under a heavy memory pressure (Like 95% of the memory is full), I'm unable to resume the machine correctly. It's just a black screen. Backlight is off too. I can use sysrq key to reboot the machine and nothing else.

When I remove the drm.edid_firmware parameter, it just works fine. Even with the memory 100% full.

Also, I can override the EDID via /sys/kernel/debug/dri/0/HDMI-A-1/edid_override (without drm.edid_firmware) and it seems to resume without any issue too.

Hardware description:

  • CPU: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
  • GPU: 03:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile Series] [1002:15d8] (rev c2)
  • System Memory: 8.0 GiB (7.1 GB usable)
  • Display(s): Internal: 1920x1080, External: 1200x1920
  • Type of Display Connection: Internal: card0-eDP-1, External: card0-HDMI-A-1

System information:

  • Distro name and Version: Fedora Linux 36 (Workstation Edition)
  • Kernel version: Linux fedora 5.18.5-200.fc36.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Jun 16 14:51:11 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
  • Custom kernel: N/A
  • AMD official driver version: N/A

How to reproduce the issue:

  • Add drm.edid_firmware=HDMI-A-1:edid/1200x1920.bin to your kernel parameters
  • Reboot of course
  • Fill the memory up to 95%
  • Suspend
  • Try to resume