Purple "stuff" on screen

[fyfe54]

I sometimes get strange purple vertical "stuff" on screen. It oscillates slowly right-left-right and fades away. Usually happens when opening or maximizing Update Manager, Terminal or Opera.

I have seen no mention of this in the Forums, and it started as soon as I updated to Oneiric.

Dell Inspiron 1545 / Ubuntu 11.10

dfyfe@dfyfe-Inspiron-1545:~$ /usr/lib/nux/unity_support_test -pOpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset
OpenGL version string: 2.1 Mesa 7.11

Not software rendered: yes
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes

Unity 3D supported: yes

Please see this screenshot.
http://ubuntuone.com/2ptau2fvYiILzl2dLqYhxL

[SparTacux]

I suggest you stop smoking weed

[Utew]

The "weed" comment would seem more likely, if it couldn't be captured in a screen shot... ahem

The first thing I thought of was an old CRT monitor going bad... makes me wonder if it's a setting having to do with the monitor itself. Next guess would be video driver issue...

You might try connecting to an external monitor and see if you get the same color banding, that will give more info....

[searchfgold6789]

INTEL.
You may be having problems with your GPU; you wouldn't be the first one to have trouble with these drivers. Could be screen problems as well.
Good luck!
- search

[fyfe54]

Hmm. I get the same stuff on the external monitor.
So how would I set about checking the gpu and/or driver? Any advice will be appreciated.
Thanks.