[Intel-gfx] gen6 (SNB) garbled window content when scrolling with SNA enabled

[Chris Wilson]

On Wed, 3 Aug 2011 00:12:07 +0200, Lukas Hejtmanek <xhejtman at ics.muni.cz> wrote:
> On Sat, Jul 09, 2011 at 12:59:50PM +0100, Chris Wilson wrote:
> > On Sat, 9 Jul 2011 13:19:57 +0200 (CEST), "Nicolas Kalkhof" <nkalkhof at web.de> wrote:
> > > Hi Chris,
> > > 
> > > Applications:
> > > Oxygen XML Editor 12.2 using latest jdk 1.6.0 (get the trial here: http://www.oxygenxml.com/)
> > > Squirrel SQL Editor 3.2.1 (get it here: http://squirrel-sql.sourceforge.net/)
> > > Desktop: XFCE 4.8 or Trinity 3.5.12
> > > Got a ScreenRegion dumped with xwd, see attachment.
> > 
> > Given that I have to wait for a trial key, you're going to have to
> > convince me that it is not simply the application mishandling a NoExpose.
> > What are the steps to reproduce within Oxygen XML Editor? Can it be
> > reproduced within the help system, which is all I can access at the
> > moment? Can it be reproduced in any other application using a different
> > toolkit?
> 
> Chris, I'm getting similar render issues with XFCE and openbox. I use 2.6.39.3
> kernel + git head driver (--enable-sna).
> 
> I got screen corruption accross all the apps (xfce-terminal, im psi, xfce4
> panel, firefox). Not all are text related, e.g., xfce4 panel gets corrupted in
> pager (workspace switcher where no text is).

I know xfce4 has the choice of a compositor, do you have it enabled? Is
it possible to capture the corruption in a screen shot?
 
> My HW is Lenovo T420. 00:02.0 VGA compatible controller: Intel Corporation 2nd
> Generation Core Processor Family Integrated Graphics Controller (rev 09)
> 
> I gave a try to 3.0 kernel but problems were even worse. Playing video using
> XV gave me random framents of video accross whole desktop :(

This is to starting to sound quite serious. Is this just an excerbation
of 2.6.39 behaviour or is it an entirely new failure mode?
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre