Public bug reported:

Hardware configuration:
 AMD Athlon 64 x2 3800+ on MSI K9N Platinum motherboard (NForce 570 chipset), 
5Gb RAM installed.
 Video card is ATI x1300.

Software:
 1. Ubuntu 9.04 with default install. It uses by default opensource 3D radeon 
driver for ATI x1300 and AMD dropped support for these cards in recent 
proprietary drivers.
 2. Nexuiz 2.5 game (OpenSource, you can download it free of charge at 
http://alientrap.org/nexuiz/)

To reproduce:
 Try to play Nexuiz for some time on some system with ATI x1300 card+OpenSource 
ATI driver.

Results:
 1) With default settings 3D is pretty slow compared to proprietary driver (you 
can lower default setting to cope with this).
 2) System usually hangs after several minutes of playing Nexuiz.

Expected:
 1) Decent 3D performance
 2) In no event driver should cause deadlocks.

Note:
 This bug seems to be quite similar to bug 237080 
(https://bugs.launchpad.net/ubuntu/+source/linux-restricted-modules-2.6.24/+bug/237080)
 AMD had fixed this problem and their proprietary drivers no longer haves this 
issue. However OpenSource driver still haves similar problem. 

Note: 
 This time I did not detected any avaialble crash dumps or smth like this. 
System just hangs, no extra data written to logs. Looks like kernel debugging 
guru needed and I'm not yet one of these, unfortunately.

** Affects: ubuntu
     Importance: Undecided
         Status: New

** Summary changed:

- ATI: open-source driver could hang in some 3D applicatioons.
+ ATI: open-source driver could hang in some 3D applications.

-- 
ATI: open-source driver could hang in some 3D applications.
https://bugs.launchpad.net/bugs/377605
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