[Nouveau] Problem with kernel 5.10-rc5

[Mark Hounschell]

I am not subscribed to this mailing list so please CC me directly for 
any response.

I'm running an older "NVIDIA Corporation G70 [GeForce 7800 GT] (rev a1)" 
card in a newer BIOSTAR B550GTA MB. Kernel 5.10-rc5 does not work. I get 
no virtual consoles or X screen.

I have not tried any other RC versions. Only rc5. Kernel 5.9.10 works 
fine. I am running a SuSE Leap-15.2 system.

I have another machine with an NVIDIA Corporation GT218 [GeForce 210] 
(rev a2) that works just fine with 5.10-rc5.


On the broken machine the screen goes blank, the leds on the front turn 
orange as if the PC was turned off.

My dmesg seems to show the cause:

[    5.825702] fb0: switching to nouveaufb from VESA VGA
[    6.242991] nouveau 0000:14:00.0: vgaarb: deactivate vga console
[    6.243066] nouveau 0000:14:00.0: NVIDIA G70 (047200a1)
[    6.443671] nouveau 0000:14:00.0: bios: version 05.70.02.13.7b
[    6.443948] nouveau 0000:14:00.0: fb: 256 MiB GDDR3
[    6.498039] nouveau 0000:14:00.0: DRM: VRAM: 250 MiB
[    6.498041] nouveau 0000:14:00.0: DRM: GART: 512 MiB
[    6.498044] nouveau 0000:14:00.0: DRM: TMDS table version 1.1
[    6.498046] nouveau 0000:14:00.0: DRM: DCB version 3.0
[    6.498049] nouveau 0000:14:00.0: DRM: DCB outp 00: 01000300 00000028
[    6.498051] nouveau 0000:14:00.0: DRM: DCB outp 01: 03000302 00000000
[    6.498053] nouveau 0000:14:00.0: DRM: DCB outp 02: 04011310 00000028
[    6.498055] nouveau 0000:14:00.0: DRM: DCB outp 03: 04011312 00000000
[    6.498057] nouveau 0000:14:00.0: DRM: DCB outp 04: 020223f1 0040c080
[    6.498060] nouveau 0000:14:00.0: DRM: DCB conn 00: 1030
[    6.498062] nouveau 0000:14:00.0: DRM: DCB conn 01: 2130
[    6.498064] nouveau 0000:14:00.0: DRM: DCB conn 02: 0210
[    6.498065] nouveau 0000:14:00.0: DRM: DCB conn 03: 0211
[    6.498067] nouveau 0000:14:00.0: DRM: DCB conn 04: 0213
[    6.502949] nouveau 0000:14:00.0: DRM: Setting dpms mode 3 on TV 
encoder (output 4)
[    6.585845] nouveau 0000:14:00.0: DRM: failed to map fb: -28
[    6.585949] [drm] Initialized nouveau 1.3.1 20120801 for 0000:14:00.0 
on minor 0

If I can do anything else please let me know.

Regards
Mark