The interesting thing on Nvidia GS 8400GS rev.2 may be:
[ 20.107995] nouveau 0000:03:00.0: DRM: GPU lockup - switching to software fbcon
[ 20.180130] nouveau 0000:03:00.0: [drm] fb0: nouveaudrmfb frame buffer device
[ 20.195263] [drm] Initialized nouveau 1.3.1 20120801 for 0000:03:00.0 on minor 0
You'll find the same lines in 4.8 (Xenial) and 5.10-rc1 (Focal) dmesg, either on K8 (the one with AGP port) and K10 (which also has AGP port).
I forgot to say I also tested this configuration and then, reproduced the bug for both Nvidia and ATI PCI cards:
Ubuntu 20.04 Focal LTS Linux 5.10.0-051000rc1-generic (from mainline Ubuntu PPA).
The interesting thing on Nvidia GS 8400GS rev.2 may be:
[ 20.107995] nouveau 0000:03:00.0: DRM: GPU lockup - switching to software fbcon
[ 20.180130] nouveau 0000:03:00.0: [drm] fb0: nouveaudrmfb frame buffer device
[ 20.195263] [drm] Initialized nouveau 1.3.1 20120801 for 0000:03:00.0 on minor 0
You'll find the same lines in 4.8 (Xenial) and 5.10-rc1 (Focal) dmesg, either on K8 (the one with AGP port) and K10 (which also has AGP port).
I forgot to say I also tested this configuration and then, reproduced the bug for both Nvidia and ATI PCI cards:
Ubuntu 20.04 Focal LTS Linux 5.10.0- 051000rc1- generic (from mainline Ubuntu PPA).