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Re: Nouveau Cache Error

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  Re: Nouveau Cache Error vpathak@orgmeta.com - 2016-12-20 19:00 +0100

#175853 — Re: Nouveau Cache Error

On Monday, October 19, 2015 at 3:20:07 PM UTC-4, David Baron wrote:
> Getting Nouveau cache read errors, source from smart. Can freeze system (KDE).
> 
> Where is this cache?
> 
> Have plenty of room.
> 
>  
> 
> Debian Sid box.



	
I encountered a similar error on fedora 25 - sometimes with chrome, and much more frequently with the webkit based native/default web browser.

The video display, mouse, keyboard would all freeze, but the ssh login would work - allowing one to see the nouveau cache errors in dmesg.

I tried a few arguments from https://nouveau.freedesktop.org/wiki/KernelModuleParameters/ , and developed the following workaround:

Add nouveau.nofbaccel=1 to the Linux kernel line during booting. On fedora it can be done by making changes to /etc/default/grub so that a line similar to this exists: GRUB_CMDLINE_LINUX="verbose nouveau.nofbaccel=1"

After this, install this command line using grub mkconfig:

grub2-mkconfig -o /boot/grub2/grub.cfg 
Reboot - preferably manually inspect that the command line has the flag.

After this change, the performance is a bit worse - but hardware acceleration is still detected by desktop manager - hence it works in full graphics mode.

Can you try this command line flag on boot on the line which specifies the Linux kernel to load.

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