Screen corrupted every 215th pixel
oldium.pro at seznam.cz
Tue Jan 4 12:42:31 PST 2011
On Tuesday 04 January 2011 21:25:35 Oldřich Jedlička wrote:
> On Monday 03 January 2011 22:13:23 Oldřich Jedlička wrote:
> > Hi all,
> > I have a really strange problem. I have every 215th column (in pixels)
> > corrupted - when I draw two vertical lines with 214 pixels in between in
> > Gimp and move the window on the desktop to the specific position, I don't
> > see any line (the column is filled with the background color). I see the
> > problem in both KDE applications and in Gimp (Gtk application), so I
> > think this isn't a toolkit problem. When I move any window, I see
> > something like "missing" columns clearly (text has no vertical line,
> > icons miss/repeat one column).
> > It starts on the 214th column (counted from 0) and after every 215 pixels
> > I see the problem.
> Hi again,
> I've found one component which makes a difference - kernel. When I boot
> with 2.6.36 (compiled from former radeon-testing branch), everything looks
> good, when I boot into 2.6.37, I see the corruption. I will investigate
> the source of the problem and raise a bug report when I know more. The
> version either is the direct source or it triggers some feature that makes
Ok, no. I wasn't right. It looked that everything is fine, but the corruption
started to appear after I've opened Konqueror (it worked with shown Firefox).
Now the corruption is on the screen aggain.
The corruption affects the whole screen, so I will continue investigating.
> > I cannot attach a screenshot, because screenshot taken with
> > Ctrl+Printscreen shows no problem.
> > It looks like the screen is split into stripes with 215 pixels (plus
> > minus pixel) and every one has somethinh like off-by-one problem.
> > I'm using this software:
> > xorg-server-126.96.36.1992
> > mesa Git master (r600 gallium driver)
> > libdrm Git master
> > xorg-video-ati Git master
> > kernel 2.6.34-rc5, drm-next branch from airlied/drm-2.6.git
> > qt-4.7.1
> > kde-4.6-rc1
> > gtk+-2.22.1
> > Does anybody know where the problem could be?
> > Thanks,
> > Oldrich.
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