Consistent ATI lockups [mi] EQ overflowing.

C. P. Ghost cpghost at
Tue Nov 22 21:23:14 UTC 2011

On Tue, Nov 22, 2011 at 10:03 PM, Jimmie James <jimmiejaz at> wrote:
> Symptoms: total lockup of X, Xorg pegged at 100% CPU time, LEDs don't work,
> keyboard is usless. SSH in allows a clean shutdown, about 50% of the time.
> FreeBSD 8.2-STABLE FreeBSD 8.2-STABLE #0: Sun Jun 26 08:42:45
> EDT 2011     jimmie at  i386
> 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
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> 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
> xf86-video-ati-6.14.2 X.Org ati display driver

Just to facilitate debugging, I see the very same behavior
on 8.2-STABLE amd64 with the radeonhd driver:


Xorg is struck in an endless loop, consuming 100% CPU.

Yes, I should have switched from radeonhd to ati, but I didn't yet
on that machine.


Cordula's Web.

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