[Dri-devel] More FIFO Resetts (2D this time)...

[Adam K K. <ad...@vo...>]

I came in from breakfast yesterday and noticed that Xscreesaver was doing
some funky stuff with my display.  I kept it going, and logged into a
serial console.  /var/log/XFree86.0.log was showing more FIFO Resets.

I've seen this a couple times before since moving to a my PCI Voodoo 5500.
After killing xscreensaver, my display gets all screwed up (the same way
it gets screwed up after a GL app locks my display).  Most windows on the
display (and any new ones I pop up) will show faint traces of the
screensaver along its edge.  This will continue until I change the
resolution and run xrefresh.  Then everything is fine again.

Please note that none of the screensaver modules are the GL ones.  I
pulled them out of my xscreensaver file a while ago (when I was
experiencing some Xserver lockups with them).

I've posted three video clips at http://www.ashke.com (you'll see three
links on the index page).  They are all viewable with xanim.  They are all
between 4 and 6 megs (16 megs total).  

The first one (Screensaver.mov) shows the bsod screensaver running on top
of the previous screensaver.  The display never cleared between
screensavers.  I'm not sure if I've included it in the video, but bsod
rotates through various OS crashes.  It's supposed to clear the display
whenever it shows a new crash message.  In this case, it shows what I
think is the Windows NT crash.  Then it shows an unhappy Macintosh.
However, it never even cleared the display between the different crashes.

The next video shows what the desktop looks like the very next time
xscreensaver starts in without first having changes resolution and run
xrefresh.

The third video is similar to the second.  (I killed the previous
xscreensaver, and let it kick in yet again).

I'm not sure if this is related to the display lockups I'm experiencing
with Terminus and Descent3, but the symptoms to appear to be similar. 

Also, I've attempted to verify that this is not an xscreensaver problem,
and think I've done so to the best of my ability.  Running the same
version at work, I've never had this experience.  After I filmed the
videos, I threw in my ATI All-In-Wonder.  Booted back up and let
xscreensaver run for close to 24 hours.  I never saw the problem crop up,
and there were no FIFO Resets in the X logfile.

Adam