blinking monitor with dri enabled

[Daniel Troeder]

On Fri, 2009-04-03 at 08:10 +0000, Alessandro Bono wrote:
> On Thu, 02 Apr 2009 12:11:47 +0200, Daniel Troeder wrote:
> 
> > On Wed, 2009-04-01 at 22:53 +0200, Alessandro Bono wrote:
> >> Hi
> >> 
> >> I'm using my notebook with an external monitor connected with a docking
> >> station, connection is with a dvi cable If I enable dri monitor works
> >> for 90% of time but randomly there is no image (not sure if not signal
> >> or out of range), image disappear for a second and reappear 2 or 3
> >> times and restart to works correctly for a couple of minute or an hour,
> >> totally unpredictable No problem if I use notebook with internal lcd
> >> 
> >> Some info:
> >> distribution ubuntu intrepid with an updated driver from jaunty
> >> compiled for intrepid
> >> 
> >> xserver-xorg-video-ati                     1:6.12.1-0ubuntu1
> >> 
> >> dri module taken from git r6xx-r7xx-support
> >> 
> >> dmesg  | egrep -i "radeon|drm"
> >> [   25.651839] [drm] Initialized drm 1.1.0 20060810 [   25.671606]
> >> radeon 0000:01:00.0: setting latency timer to 64 [   25.671838] [drm]
> >> Initialized radeon 1.29.0 20080613 on minor 0 [   26.697087] [drm]
> >> Setting GART location based on new memory map [   26.712782] [drm]
> >> Loading RV630 CP Microcode [   26.713453] [drm] Loading RV630 PFP
> >> Microcode [   26.728445] [drm] Resetting GPU
> >> [   26.728506] [drm] writeback test succeeded in 1 usecs [ 5193.473484]
> >> [drm] Resetting GPU
> >> 
> >> 
> >> lspci | grep -i radeon
> >> 01:00.0 VGA compatible controller: ATI Technologies Inc M76 [Radeon
> >> Mobility HD 2600 Series]
> >> 01:00.1 Audio device: ATI Technologies Inc RV630/M76 audio device
> >> [Radeon HD 2600 Series]
> >> 
> >> 
> >> some log attached with dri and nodri configuration
> >> 
> >> also attached xrandr output
> >> as you can see DVI and HDMI seems either connected (notebook has a hdmi
> >> port) but it's incorrect only dvi port from docking station is in use,
> >> this problem was present also with older ati drivers
> >> 
> >> tell me if you need other info
> >> 
> >> thanks
> > Hello :)
> 
> Hi Daniel
> 
> > 
> > This is probably the same bug I experience:
> > http://lists.opensuse.org/radeonhd/2009-03/msg00236.html
> > https://bugs.freedesktop.org/show_bug.cgi?id=20047
> > 
> > Though it didn't take an hour for me to happen. Does it happen with
> > lower resolutions, too?
> 
> I tried with lower resolution but there is not image at all (bad 
> experience, gnome monitor manager not return to original resolution in 
> case of problem,  so switch to cli and so on)
Hi :)

Sorry: I mixed up the mailing lists... the bug I pointed out is with the
radeonHD driver.

Tip: I alway keep a terminal open and in focus, so that I can type
 "xrandr --auto" (or s.t. appropriate), in case the screen goes black.
If you wish to use a GUI to switch resolutions, you can also have a
terminal in the background running, and execute there:
# sleep 30 && xrandr -q && xrandr --auto
And then switch your resolution.
That way you'll get a print of what happend, and then resolution returns
to something working.

Anyway, good luck :)
Daniel

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