Ubuntu
xserver-xorg-video-intel package

  1. Bug #91966
  2. Comment #34

Comment 34 for bug 91966

Revision history for this message
Jamie Lokier (jamie-shareable) wrote : Re: [Bug 91966] Re: screen artifacts after resume, part row of pixels in error (945GM)

Peter Maydell wrote:
> >disabling DRI makes the screen artifact go away.
>
> I'm not so sure. I've seen this corruption on my multihead
> configuration, and that never has DRI enabled, because the total width
> is > 2048 pixels so the Intel driver is forced to disable DRI on the 945
> chipset...

I'm intrigued by you getting > 2048 pixels width. Whenever I've
tried, xrandr has simply refused, so I have to have dual head with one
screen below the other. I also have 945GM.

Let's try it now:

jamie@amilo:~$ xrandr --output TMDS-1 --auto --output LVDS --auto --right-of TMDS-1
xrandr: screen cannot be larger than 1680x1880 (desired size 2960x1050)

Nope, doesn't work. How do you get it > 2048 pixels width?

I have the impression it's 3d specifically which is disabled by the
2048 pixel limit, but not DRI/DRM in general and all the different
style of memory management which goes with it?

-- Jamie