Kernels >= 6.3 disable video output

[Alex Deucher]

+ Harry

On Thu, May 15, 2025 at 12:11 PM Steven J Abner <pheonix.sja at att.net> wrote:
>
> On Mon, May 12 2025 at 08:10:40 PM +0000, Alex Deucher
> <alexdeucher at gmail.com> wrote:
> > See:
> > https://docs.kernel.org/admin-guide/bug-bisect.html
> > ... identify the exact commit which broke caused your issue.
>
>  One heck of a journey! But tested the solution on the first broken
> kernel 6.3. Too chicken to force revert attempts of 6.12 and 6.6 since
> I really didn't understand why revert spewed out 'nah-ah' for a one
> liner. 6.3 passed simple test of no blackouts for 8 in a row boots.
>  Firstly let me qualify the revert, cause it's how i got it to work:
> git show c76e483cd9163138e8fc44d829c986819f072d4f | patch --fuzz=999
> -p1 -R
>  It seems simple enough of code which appears to set 8 bits of color
> for rgb as maximum, but with struct changes and me having a
> 'historical' processor :) didn't want to have a non-expert speak that
> this is the full solution.
>  Also note that I didn't 100% follow the bug-bisect guide as mine was
> apparently a unique situation where it had to first learn to connect to
> the internet and I don't use intrd images among other oddities. Also
> did this from last working kernel (6.2.16) to verify it was the last.
> PS had to patch amdgpu Makefile to allow the 6.2 series to compile with
> new gcc (-Wno-error).
>  If need other info or need me to test actual patched 'upstream'
> kernel, I'm here.
> Thank you!
> Steve
>
>