2009/12/18 Corbin Simpson <mostawesomed...@gmail.com>:
> >From 7c1de3201bd4e965da7c1d542c46d8b2725bf42d Mon Sep 17 00:00:00 2001
> From: Corbin Simpson <mostawesomed...@gmail.com>
> Date: Fri, 18 Dec 2009 01:00:57 -0800
> Subject: [PATCH] drivers/radeon/kms: Workaround RV410/R420 CP errata.
>
> Long story short, this fixes sporadic hardlocks with my rv410 during
> times of intense 2D acceleration (Flash on Fx3).

Can this be issue on newer chipsets as well? I get hard lockup on
RV620 from time to time, very easy reproducible with just starting
JDownloader (java application). It seems to do some heavy 2D and locks
up my machine in something between 1 second and few minutes.

This does not happen when I use UMS (non-KMS) or when I start
JDownloader on KDE's virtual desktop #2 and switch to desktop #1.

-- 
Rafał

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