[Bug 1771] New: Intel 865G on P4P800-VM I830WaitLpRing() lockup

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https://freedesktop.org/bugzilla/show_bug.cgi?id=1771        
   
           Summary: Intel 865G on P4P800-VM I830WaitLpRing() lockup
           Product: xorg
           Version: 6.8.1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: blocker
          Priority: P2
         Component: Driver/i810
        AssignedTo: xorg-bugzilla-noise at freedesktop.org
        ReportedBy: andrej.prsa at guest.arnes.si
                CC: andrej.prsa at guest.arnes.si


The problem is being manifested on the integrated Intel 865G (Extreme Graphics 
2) card on ASUS P4P800-VM motherboard. It has occured with every recent X 
version, XFree86 4.1 through 4.4 and X.org 6.7, 6.8.0 and 6.8.1. It is related 
to i810 module that causes an X server lockup with the message (for details see 
attached Xorg.log.0):

Error in I830WaitLpRing(), now is 39399141, start is 39397140

This error occurs frequently (e.g. 20 minutes of active using), but it isn't 
strictly reproducible. If DMA is on, the lockups occur more frequently. I tried 
using 865patch to no avail. gdm tries to restart it, but the only way to revive 
the X is to reboot or to ssh from another computer and change the video driver 
to vesa in xorg.conf.        
   
   
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