Ubuntu
linux package

  1. Bug #1899304
  2. Comment #11

Comment 11 for bug 1899304

Revision history for this message
Thomas Debesse (illwieckz) wrote : Re: Linux 5.4.0-48 (and later) causes GPU lockup, huge performance drop, makes GNOME desktop fail to start and games going from 70fps to 7fps, slow file loading, audio issues

I reproduce the bug on another computer, using 5.4.0-52-generic kernel:

Motherboard: Asrock AM2NF3 VSTA
CPU: AMD Phenom II X4 970 (Quad core)
RAM: 16GB DDR2 800MHz (4×4 GB)
GPU: ATI Radeon HD 4670 AGP
VRAM: 1GB DDR3

Of course the same computer works flawlessly with 5.4.0-47-generic kernel.

I noticed that if I plug a Radeon 9250 instead of the Radeon HD 4670, the desktop uses LLVMpipe software and GNOME manages to start successfully but this is so slow I can see the desktop being drawn. Note that LLVMpipe rendering on that same GPU but on 5.4.0-47-generic kernel is not that slow. When running 5.4.0-53-generic I can see the pixels being painted, that say so much how slow Ubuntu becomes on kernel greater than 5.4.0-47-generic.