Kernels >= 6.3 disable video output

[Steven J Abner]

On Fri, May 9 2025 at 01:11:17 PM +0000, Alex Deucher 
<alexdeucher at gmail.com> wrote:
> What display(s) are you using and how are they connected?  Can you 
> bisect?

Not sure the question, but it's a tv thru HDMI.

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
DisplayPort-0 disconnected primary (normal left inverted right x axis y 
axis)
HDMI-A-0 connected 1920x1080+0+0 (normal left inverted right x axis y 
axis) 575mm x 323mm
   1920x1080 60.00*+ 60.00 50.00 59.94 30.00 25.00 24.00 29.97 23.98

And hopefully to verify, 3 OSs run fine: Ubuntu/Elementary 5.4, PearlOS 
5.15, and LFS 5.15 thru 6.2.16. 6.3 and above has 70% fail rate with 
firmware built in to kernel, no fail if no firmware. Mainline 6.8 was 
on PearlOS.
Steve