Screen contamination

[gene heskett]

On Friday, April 22, 2011 08:40:50 PM dark_mail at gmx.net did opine:

> Am 22.04.2011 23:00, schrieb gene heskett:
> > Greetings folks;
> > 
> > I have a problem.  Anytime I spend some time watching a news video on
> > say fox or cnn's sites, I wind up with screen background
> > contamination in my console windows of other workspaces.  Bit and
> > pieces show up on the bottom half of such a terminal window, remain
> > stationary on the screen as the terminal window is moved about, but
> > are constrained by the border when the terminal is moved, but comes
> > right back as soon as the terminal windows border encompasses that
> > area of the screen again.
> > 
> > Using FF4.0 and a pclos repo supplied kernel version 2.6.38.2, on
> > pclos, on a quad core phenom, 4Gb of dram, and the latest .44 version
> > of the dkms installed nvidia-current driver on a 9400 series nvidia
> > card.
> > 
> > FWIW, I recall seeing that also when I switched to the vesa driver, so
> > while it could be related, I am dubious.
> > 
> > What can I do to facilitate narrowing this down?
> > 
> > Thanks.
> 
> I'm by no means an expert, but could you try and disable page flipping
> in the xorg.conf or check if it's turned on in the first place?
> 
> I ran into a similar looking issue with the switch to kernel 2.6.38,
> which introduced KMS page flipping to my graphics card (radeon).
> 
> Checking for page flipping:
> "cat /var/log/Xorg.0.log | grep -i Pageflip"
> 
> If it's reported as enabled, read on. :-)
 
It is a null return.

> In your xorg.conf, put the following line in the "Device" section,
> reboot and check if the issue appears.
> 
> 
> Section "Device"
> 
>         Option  "EnablePageFlip"        "off"
> 
> EndSection
> 
> If turning it off helps, maybe you're also being hit by bug
> https://bugs.freedesktop.org/show_bug.cgi?id=35452
> 
> This one is about the ati driver, though. So maybe it's unrelated. I
> hope I'm being helpful.

I wonder if there is a different name for it when using the nvidia driver?

Thanks.


-- 
Cheers, Gene
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