Bug#504535: xserver-xorg-video-radeon: Freeze in 24bit and 16bit fullscreen (Radeon Mobility M6 LY)

[Sylvain Beucler]

On Sun, Feb 01, 2009 at 05:52:29PM +0100, Brice Goglin wrote:
> Sylvain Beucler wrote:
> >> Does
> >>
> >> 	Option	"AGPMode" "1"
> >>
> >> (or "2") help? Please verify for your tests that the option value is
> >> reflected in the log line above.
> >>     
> >
> > Apparently this helps, but the freezes are not as easily reproduceable
> > as I thought, so I can't say for sure. I'll run some more tests.
> >   
> 
> Any news about this?
> Once you'll have found a AGPMode value that works better, we'll ask
> upstream to add a quirk for your machine.

Apparently 2x works best.

24bit - 4x

(==) RADEON(0): Using AGP 4x

Feb 13 20:26:57 kobo kernel: [ 5112.044659] agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
Feb 13 20:26:57 kobo kernel: [ 5112.044659] agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
Feb 13 20:26:57 kobo kernel: [ 5112.044659] agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
Feb 13 20:26:59 kobo kernel: [ 5113.556487] [drm] Setting GART location based on new memory map
Feb 13 20:26:59 kobo kernel: [ 5113.556487] [drm] Loading R100 Microcode
Feb 13 20:26:59 kobo kernel: [ 5113.695213] [drm] writeback test failed

Sometimes very small horizontal lines all across the screen, sometimes
  it will crash. It probably depends on temperature / how intensively
  the card was used before. This is why the freezes aren't easy to
  reproduce in all situations.

torus-troopers windowed: FREEZE if the card was stressed
torus-troopers fullscreen: FREEZE guaranted after a little while
title screen fonts: OK


24bit - 1x

(**) RADEON(0): Using AGP 1x

Feb 13 20:43:55 kobo kernel: [  312.164131] agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
Feb 13 20:43:55 kobo kernel: [  312.164170] agpgart: Putting AGP V2 device at 0000:00:00.0 into 1x mode
Feb 13 20:43:55 kobo kernel: [  312.164192] agpgart: Putting AGP V2 device at 0000:01:00.0 into 1x mode
Feb 13 20:43:56 kobo kernel: [  313.673178] [drm] Setting GART location based on new memory map
Feb 13 20:43:56 kobo kernel: [  313.673178] [drm] Loading R100 Microcode
Feb 13 20:43:56 kobo kernel: [  313.812819] [drm] writeback test failed

torus-troopers windowed: OK
torus-troopers fullscreen: OK
title screen fonts: MESSY


24bit - 2x

(**) RADEON(0): Using AGP 2x

Feb 13 21:23:53 kobo kernel: [ 1214.753137] agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
Feb 13 21:23:53 kobo kernel: [ 1214.753137] agpgart: Putting AGP V2 device at 0000:00:00.0 into 2x mode
Feb 13 21:23:53 kobo kernel: [ 1214.753137] agpgart: Putting AGP V2 device at 0000:01:00.0 into 2x mode
Feb 13 21:23:54 kobo kernel: [ 1216.260518] [drm] Setting GART location based on new memory map
Feb 13 21:23:54 kobo kernel: [ 1216.260518] [drm] Loading R100 Microcode
Feb 13 21:23:54 kobo kernel: [ 1216.260518] [drm] writeback test succeeded in 1 usecs
==> not sure what this failed/succeeded means

torus-troopers windowed: OK
torus-troopers fullscreen: OK
title screen fonts: OK

At first glance, no freeze.


When the card freezes, SSH is still functional, but the only way to
get the screen back is to reboot. The mouse may still be functional
though.

-- 
Sylvain