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Frequent boot to black screen (Phoenix1)

Brief summary of the problem:

This issue started about 2-3 weeks ago I believe around the time that Ubuntu updated Noble to linux kernel 6.8 and linux firmware packages from kernel 6.5.

The issue is that on boot the (internal laptop and external displays if connected) are black but backlight is lit. I am able to boot into recovery mode without issue since the graphics drivers are not loaded in that case (only amd framebuffer driver and userspace mesa llvmpipe). Cold boot from OFF seems to be the most common case for this issue and it happens about 50-75% of the time from there.

I will also note that on the boot to black screen I never see any plymouth bootlogos or messages. The screen remains black after grub (with only backlight level changing). When I get a successful boot I see the plymouth bootlogos and messages and then get dropped to sddm login screen. plymouth failing to display to me indicates an issue with the DRM/KMS subsystem (plymouth uses KMS to display graphics on earlyboot which is what is failing to happen here).

Linking back to my message earlier #1256 (closed) and the related ubuntu launchpad bug I filed https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2063143

Hardware description:

  • CPU: Ryzen 5 7640U
  • GPU: AMD 760M
  • System Memory: 16GB DDR5
  • Display(s): 2556x1504 (internal), any (external)
  • Type of Display Connection: eDP (internal), HDMI (external), DP (external)

System information:

  • Distro name and Version: Ubuntu Noble 24.04
  • Kernel version: 6.8.0-31-generic #31-Ubuntu SMP PREEMPT_DYNAMIC Sat Apr 20 00:40:06 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
  • Custom kernel: N/A
  • AMD official driver version: N/A
  • BIOS: version 3.03 and 3.05 (latest new release)

How to reproduce the issue:

Attempt to boot AMD Framework 13 from cold using linux kernel 6.8 and accompanying linux firmware and get black screen 50-75% of the time.

Attached files:

journalctl of a bad and good boot:

Black screen on boot: https://launchpadlibrarian.net/725987752/preboot.txt Note that after an extended period of time I attempt to shut down the system by short pressing the power button but am unable to do so and end up force powering off.

Successful boot to login manager: https://launchpadlibrarian.net/725988838/cuttent_boot.txt