Arch Linux

Description:

When suspending to ram and resuming (via wake on lan) video output appears completely currupted, this
affects both X and the virtual consoles. My keyboard doesn't accept input either, but I can ssh in.

A related bug might be that with KMS enabled mode

From Xorg.0.log.old:

(II) RADEON(0): DIG0 transmitter: Coherent Mode enabled
Output DIG0 transmitter setup success
Blank CRTC 1 success
Disable CRTC 1 success
Disable CRTC memreq 1 success
(II) RADEON(0): RADEONRestoreMemMapRegisters() :
(II) RADEON(0): MC_FB_LOCATION : 0x00cf00c0 0x00cf00c0
(II) RADEON(0): MC_AGP_LOCATION : 0x0003ffff
(II) RADEON(0): avivo_restore !
Enable CRTC memreq 1 success
Enable CRTC 1 success
Unblank CRTC 1 success
Enable CRTC memreq 0 success
Enable CRTC 0 success
Unblank CRTC 0 success
Output CRT1 disable success
(II) RADEON(0): DIG0 transmitter: Coherent Mode enabled
Output DIG0 transmitter setup success
Blank CRTC 0 success
Disable CRTC 0 success
Disable CRTC memreq 0 success
Blank CRTC 1 success
Disable CRTC 1 success
Disable CRTC memreq 1 success
Output CRT1 disable success
Blank CRTC 0 success
Disable CRTC 0 success
Disable CRTC memreq 0 success
Mode 1440x900 - 1904 934 6
(II) RADEON(0): RADEONRestoreMemMapRegisters() :
(II) RADEON(0): MC_FB_LOCATION : 0x00cf00c0 0x00cf00c0
(II) RADEON(0): MC_AGP_LOCATION : 0x003f0000
(EE) RADEON(0): Timeout trying to update memory controller settings !
(EE) RADEON(0): You will probably crash now ...

The

(EE) RADEON(0): Timeout trying to update memory controller settings !
(EE) RADEON(0): You will probably crash now ...

repeats many, many times.

Additional info:
* package version(s)

Name : xf86-video-ati
Version : 6.12.4-3

Name : kernel26
Version : 2.6.32.8-1

local/xorg-server 1.7.4.901-1 (xorg)
X.Org X servers
local/xorg-server-utils 7.5-3 (xorg)
X.Org utilities required by xorg-server
local/xorg-utils 7.5-1 (xorg)
Collection of client utilities used to query the X ser

Steps to reproduce:
enable "early start" kms via grub
use mkinitcpio to generate an initial ramdisk
reboot then suspend to ram
issue wake on lan magic packet

*Note: I haven't confirmed if this affects non wake-on-lan resume from suspend, or "late start" kms. I realize this is almost certainly an upstream bug and will report it to freedesktop.org as well.