all X graphics (3d and normal, nvidia, intell, probably radeon) is displaying random glitches (random bitmaps) for a moment

Bug #323720 reported by LimCore
2
Affects Status Importance Assigned to Milestone
Ubuntu
New
Undecided
Unassigned

Bug Description

I observed X glitches of this type for around a year now (since end 2007), as well on intell laptops, and on nvidia.

Following glitches:
random bitmap (looks like if uninitialized pixelmap / texture, most of it is black or white often, with random dots all over) is displayed:
... when showing a new element (GUI widget) in example a page in firefox (opening new tab), a page in kmail, and so on, this happens on regular 2d desktops (with no 3d effects etc)

... when showing a new 3D element (in example on default ubuntu 8.10 in KDE, click on the KDE button and the background where menu fades-in for a moment flashes to show this random pixels.

- the glitch vanishes quickly in around 0.5 second (as if it was redrawn, this time with correct pixel map)
- the glitch sometimes looks like another part of screen of some other pixmaps, but skewed (so it looks indeed like uninitialized-pixmap problem?)

I confirmed this problems on:
- older nvidia (5200?) on ubuntu 7.10 / 8.04 perhaps
- nvidia 6800 GT, ubuntu 8.04 amd64 dual core, kde, regular "2d" desktop
- intell i915, ubuntu 8.10 i386, kde, fresh install, default 3d desktop
- intell GM965/GL960 gfx (also called X3100?) intell ubuntu 8.10 amd64, kde, default Gnome desktop
- some other boxes too

I seen this in many applications, especially thunderbird, firefox, kmail, openoffice.

It is also visible when the screen is locked (kde and/or screen lock) and then user is presented with password input box (blank screensaver with one color). In this case he often sees in background not the color (or screensaver), but a random bitmap, which sometimes (1 in 10 times?) looks like the screen but skewed a bit (btw, nice security exposure)

There are glitches on Intell's - bug#285298 - but probably this is other bug.
There are glitches like bug#212155 on radeon - but probably this is other bug.

To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.