Ubuntu
compiz package

Switching between applications creates a strong jitter

Bug #157348 reported by Kuropka
10
Affects Status Importance Assigned to Milestone
compiz (Ubuntu)
Invalid
Low
Unassigned

Bug Description

Switching between applications by using Alt+Tab creates a strong jitter if 3D/visual effects of the desktop are active and the application is in full-screen mode.

Example which works on my computer:

1. Ensure that visual effects (3D acceleration) is used on your desktop and supported by your graphics card and the drivers.

2. Open any arbitrary PDF-Document with the Evince Document Viewer

3. Press F11 to get into the Full-Screen-Mode of Evince

4. Press Alt-Tab to switch the applications... switch via all applications and come back to Evince. You should notice a wild jitter on the screen when you wanna switch back to Evince.

Revision history for this message
Hew (hew) wrote :

I confirm the issue with compiz 1:0.7.7+git20080807-0ubuntu10 on Intrepid.

Changed in compiz:
importance: Undecided → Low
status: New → Confirmed
Revision history for this message
Robert Ancell (robert-ancell) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue for you. Can you try with the latest Ubuntu release? Thanks in advance.

Changed in compiz (Ubuntu):
status: Confirmed → Incomplete
Revision history for this message
Kuropka (d2) wrote :

This bug is partially fixed. The jitter still occurs but it stops once you finished switching between applications. This means its not a showstopper any more, but its still not a perfect solution.

Revision history for this message
Robert Ancell (robert-ancell) wrote :

Could you describe what you mean by jitter? Does it look like a tearing? What video hardware/drivers are you using?

summary: - Switching between applications creates a strong jitter if 3D/visual
- effects are on
+ Switching between applications creates a strong jitter
Revision history for this message
Kuropka (d2) wrote :

If I switch an application like the PDF Viewer to full screen mode and ALT-TAB to a different application and then want to come back with ALT-TAB to the PDF Viewer the screen starts to flicker (showing back ground image for 0.1 secs then the application for 0.1 secs and then it repeats with back ground image...) until I release ALT-TAB.

I use the following hardware: Nvidia GeForce 8800 GTS with Nvidia propertary driver version 180.

Revision history for this message
Leo Arias (elopio) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner.
There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test the current Ubuntu development version (10.10). If you can test it, and it is still an issue, we would appreciate if you could upload updated logs by running apport-collect 157348, and any other logs that are relevant for this particular issue.

Revision history for this message
Kuropka (d2) wrote :

This issue is fixed with Ubuntu 10.04 LTS. Thank you very much!

Revision history for this message
Hew (hew) wrote :

This bug report is being closed due to your last comment regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.

Changed in compiz (Ubuntu):
status: Incomplete → Invalid
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