[i915] artifacts on window switch with more than 3 windows opened

[Oleksij Rempel]

Binary package hint: compiz

If i switch between application (alt+tab) and more the 3 applications opened, switch preview will have strange artifacts. See attached screenshots.

lsb_release -rd
Description: Ubuntu 9.04
Release: 9.04

apt-cache policy compiz
compiz:
  Installiert: 1:0.8.2-0ubuntu7
  Kandidat: 1:0.8.2-0ubuntu7
  Versions-Tabelle:
 *** 1:0.8.2-0ubuntu7

hardware
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)

it seems to depends on architecture or hardware. my i386 with 915GM graphic. At same time i can't reproduce it on amd64 with Nvidia graphic.

Steps to reproduce:
1. get this hardware. and arch?
2. open two applications and try to switch (it wil work ok)
3. open 4 or 5 applications and try to switch (it is broken)
i tested it with firefox, thunderbird, openoffice and wine (bibelworks).

[Robert Ancell (robert-ancell)]

Thanks for your bug report. The symptoms provided indicate this is a problem with your video drivers and is being reassigned to the xorg package. For more information on problems with visual effects and video drivers see http://wiki.ubuntu.com/VisualEffects.

[Bryce Harrington (bryce)]

Hi bug-track,

Thanks for including an image to demonstrate the issue. Could you also please attach the output of `lspci -vvnn`, and attach your /var/log/Xorg.0.log or Xorg.0.log.old file from after reproducing this issue. If you've made any customizations to your /etc/X11/xorg.conf please attach that as well.

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[Bryce Harrington (bryce)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.