On 20 May 2025 10:47:28 -0700, Peter wrote in message
<20250520174736.736F9227CE4@???>:

> Now a clue of serious breakage.
>

> From:    Arnt Karlsen <arnt@???>
> Date:    Mon, 19 May 2025 20:56:16 +0200
> > xrandr -q  --verbose  

>
> With mainboard video alone; Radeon card not installed.
>
> ~# xrandr -q --verbose
> Can't open display

..if it "Can't open display", ^d to log out of that
ssh session and ssh back in with ssh -X or ssh -Y.


> X can't find graphical video. Ouch!
>
> Also noted. With Radeon installed, the BIOS appears to allow
> choosing the mainboard video but the selection fails to stick. After
> reboot the Radeon card is selected again.

..yup, is what most people want when it all works ok.

..to get there, try a boot banning the radeon driver,
using e.g. vesa. vga or fbdev driver.

> Regarding kernel gfxmode and gfxpayload.
>
> > ..weird, it should manage VGA.
>
> I failed to explain properly. Should have said behaviour is the same
> with and without "set gfxmode"; and the same with and without "set
> gfxpayload".
>
> I should fix mainboard video before the Radeon addition.

..good plan, would allow an hardware display on each video card without
having to debug Debians ideas on poetterized ssh "security" forcing the
use of ssh -Y.

> Appears the BIOS update image is not available from a server now.
> Might look for a BIOS reset jumper on the mainboard. Tomorrow or
> later.
>
> Other ideas welcome of course.
>

> Thanks!                          ... P.

>
>


--
..med vennlig hilsen = with Kind Regards from Arnt Karlsen
...with a number of polar bear hunters in his ancestry...
Scenarios always come in sets of three:
best case, worst case, and just in case.