[Bug 1592] fixes non-working acceleration on i810/i815 chipsets

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https://freedesktop.org/bugzilla/show_bug.cgi?id=1592        
   

rkagan at mail.ru changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |




------- Additional Comments From rkagan at mail.ru  2004-10-26 08:22 -------
Updating to the latest CVS (which includes your patch) produces weird artefacts
with acceleration on my i815 based systems, e.g. incompletely drawn gtk widgets.
The problem seems to be in this change:

https://freedesktop.org/bugzilla/attachment.cgi?id=1075&action=diff#programs/Xserver/hw/xfree86/drivers/i810_old/i810_accel.c_sec1

which apparently prohibits the allocation of an LpRing at Xserver startup.  I
don't claim complete understanding of what's going on there, but reverting this
bit restores the correct behavior.  Tested on Intel D815EEA and GigaByte GA-6IEM
i815-based mobos.        
   
   
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