[Bug 278318] Re: video tearing with textured video on intel card

[Bryce Harrington]

Fix uploaded to both jaunty and intrepid.  SRU is ready to go.  :-)

Thanks everyone for the testing.

** Description changed:

- Textured video seems to be enabled in the intel driver now in intrepid
- and a patch that made it possible to disable it has been removed.
+ [Impact]
+ Previously we shipped an option to turn textured video on/off.  For Intrepid, textured video was felt to be stable so we removed this option.  However, as evidenced by this bug, some people are still seeing some issues, and wish to still have a mechanism to turn it on/off if they desire.
+ 
+ [Development Branch]
+ The identical fix is uploaded to Jaunty.
+ 
+ [Patch]
+ The attached patch is a modified version of one we've shipped for a long time in the past.  It has been modified to default to on instead of off.
+ 
+ [Test Case]
+ On affected hardware, try setting the "TexturedVideo" option to false in xorg.conf.  It will have no effect in the unpatched version.  With the patched version, it will cause textured video to be disabled.
+ 
+ [Regression Potential]
+ Extremely unlikely.  It just adds a configuration option whose default value leaves the system identical to how it was before.
+ 
+ For people who choose to use this option to turn off textured video,
+ they may see artifacts, performance effects, or other undesired behavior
+ (all reasons why textured video was desired to begin with).  It is
+ assumed that people who wish to configure their systems this way, will
+ accept these behaviors.
+ 
+ [Original Report]
+ Textured video seems to be enabled in the intel driver now in intrepid and a patch that made it possible to disable it has been removed.
  
  This leads to severe video tearing in all video players I tried:
  mplayer, totem, vlc.
  
  The only workaround for me at the moment is to use mplayer and instruct
  it to use the xv port that isn't textured. This also seems to confirm,
  that it is indeed textured video that is causing the problem.
  
  I'm using a netbook with a Mobile 945GME Express Integrated Graphics
  Controller.
  
  My suggestion would be to give people who have this problem the
  opportunity back to disable textured video altogether.

** Changed in: xserver-xorg-video-intel (Ubuntu Intrepid)
   Importance: Undecided => High
       Status: New => Fix Committed

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video tearing with textured video on intel card
https://bugs.launchpad.net/bugs/278318
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