ATI & libreoffice lock up Xorg

[Warren Block]

On Mon, 15 Aug 2011, Jimmie James wrote:

> I just noticed this, but I'm pretty sure it's a result of the last ATI driver 
> update,
>
> FreeBSD 8.2-STABLE #0: Sun Jun 26 08:42:45 EDT 2011
>
> xf86-video-ati-6.14.2 + libreoffice-3.3.3_2 + xorg-7.5.1 = hard lockup, 
> keyboard LEDs work for a bit, can't change
> to a console, kill X. ssh'ing in, running top shows Xorg at 100% CPU time. 
> Nothing gets printed to the Xorg.0.log
>
> xf86-video-vesa-2.3.0_1 + libreoffice-3.3.3_2 + xorg-7.5.1 = works fine.
>
> vgapci0 at pci0:6:3:0:	class=0x030000 card=0x51571002 chip=0x4c571002 
> rev=0x00 hdr=0x00
>    vendor     = 'ATI Technologies Inc. / Advanced Micro Devices, Inc.'
>    device     = 'Mobility Radeon 7500 (M7 [LW])'
>    class      = display
>    subclass   = VGA
> vgapci0: <VGA-compatible display> port 0xb800-0xb8ff mem 
> 0xd0000000-0xdfffffff,0xff520000-0xff52ffff irq 19 at device 3.0 on pci6
> drm0: <ATI Radeon LW RV200 Mobility 7500 M7> on vgapci0

We've been talking about ATI lockups on the forums:
http://forums.freebsd.org/showthread.php?t=25540

It's mystifying to me, since I haven't seen the lockups at all.