Re: KMScon vs. AMD Radeon

[pelzflorian (Florian Pelz)]

On Mon, Apr 22, 2019 at 01:48:52PM +0200, pelzflorian (Florian Pelz) wrote:
> As before, when I do not specify modprobe.blacklist=radeon, the
> display gets stuck with
> 
> [   8.679377] fb0: switching to radeondrmfb from EFI VGA
> 
> Before, I could add modprobe.blacklist=radeon to boot to a console.
> 

When I boot the Debian 9.8.0 live ISO, I get a working fbdev with
these messages in /var/log/Xorg.0.log

[    11.795] (**) FBDEV(2): claimed PCI slot address@hidden:0:0
[…]
[    11.795] (II) FBDEV(0): hardware: EFI VGA (video memory: 1984kB)

These messages are missing on Guix (instead, I get
[    45.884] (EE) Screen 0 deleted because of no matching config section.
where Debian has successfully found a screen.


Before these messages, I see on Guix:

[    43.781] (--) PCI:*(address@hidden:0:0) 1002:6613:1043:0541 rev 0, Mem @ 
0xe0000000/268435456, 0xf7e00000/262144, I/O @ 0x0000e000/256, BIOS @ 
0x????????/131072

On Debian, I see:

[    11.702] (--) PCI:*(0:1:0:0) 1002:6613:1043:0541 rev 0, Mem @ 
0xe0000000/268435456, 0xf7e00000/262144, I/O @ 0x0000e000/256, BIOS @ 
0x????????/131072


I wonder, where does this difference in the PCI message come from?