[Bug 204885] ryzen 2500U cause graphics glitch in all browsers with kernel version 5.2.x+

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=204885

no2stable (pRoMMMModE at outlook.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #5 from no2stable (pRoMMMModE at outlook.com) ---
(In reply to Pierre-Eric Pelloux-Prayer from comment #4)
> This bug looks similar to https://bugs.freedesktop.org/show_bug.cgi?id=111122
> 
> Could you try the various workarounds proposed there and see if it helps:
>   - adding the iommu=pt kernel boot parameter (see
> https://wiki.archlinux.org/index.php/kernel_parameters#GRUB)
>   - or using the AMD_DEBUG=nodcc environment variable (for instance, try
> adding a new line with "AMD_DEBUG=nodcc" in the /etc/environment file and
> reboot)
>   - or updating Mesa to the latest version

So adding "iommu=pt" to the kernel parameter dose help, thanks a lot!

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