Ubuntu
compiz package

[nvidia] 2 sec delay on 1 of 2 X screens, no xinerama

Bug #242735 reported by Masterpop
6
Affects Status Importance Assigned to Milestone
compiz (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

my Ubuntu 8.04 (86_64 version) is set up to use dual monitors (19" LCD, and a 40" Sony TV) using two separate X Screens (no xinerama).

There is a 2 second delay before any menu appears on the LCD screen (Applications/Places/System) or even a File/Menu/View inside Firefox. Maximising windows is also subject to approximately a 2 second delay. I am not using compiz, the problem is not present when using nv or vesa driver.

The menus on the TV X Screen have no such problem, only the Monitor. I've tried physically changing the wires on the graphics cards, renumbering the screens, location, etc. the main screen always has a lag when drawing menus.

I had the nvidia 169.12 drivers, before going through the pain of upgrading to 173.14.09

I found this thread on the problem: http://www.nvnews.net/vbulletin/showthread.php?t=114239 so I know I am not the only one. Also, i do not think it is a compiz issue.

If I disable the TV, then the problem dissapears.

Thanks for any help. I attach the xorg.conf file.

Related branches

lp:ubuntu/natty/compiz
Revision history for this message
Masterpop (masterpop) wrote :
Revision history for this message
Masterpop (masterpop) wrote :

One last thing, despite the config file speicifying 60Hz for both monitors, according to nvidia-settings the TV is running at 50Hz, while LCD monitor at 60.02Hz. Not sure if this is related.

Revision history for this message
Alberto Milone (albertomilone) wrote :

using Compiz is still resource intensive (especially with the NVIDIA driver). What happens if you disable Compiz and restart the Xserver?

Revision history for this message
Masterpop (masterpop) wrote :

apologise for the late reply. Actually switching to metacity seems to solve the problem. the menu's become very responsive as one would expect. Although still suprised that Compiz has such a detrimental effect...even on a quad core intel 2.6Ghz with 8GB of ram? evidently so...
thank you very much for you post.

Revision history for this message
Masterpop (masterpop) wrote :

update: apparetly the issue has been fixed in compiz by the nvidia guys. http://www.nvnews.net/vbulletin/showthread.php?t=114239&page=2

Revision history for this message
TobiasDomhan (tdomhan) wrote :

got the same problem here, changed the package to compiz, as it is/was a problem of compiz

Changed in nvidia-graphics-drivers-173:
status: New → Confirmed
Revision history for this message
TobiasDomhan (tdomhan) wrote :

the fix works :D
added a debdiff which should be sponsored

Revision history for this message
TobiasDomhan (tdomhan) wrote :

grml that was the wrong debdiff....I am sorry

Revision history for this message
TobiasDomhan (tdomhan) wrote :

ok sorry for another upload, added LP: #242735, so that the upload will close the bug automatically

Revision history for this message
Bryce Harrington (bryce) wrote :

Thanks, I've updated the changelog entry a bit to include mention that this is an upstream fix.

Changed in compiz:
status: Confirmed → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package compiz - 1:0.7.7+git20080807-0ubuntu13

---------------
compiz (1:0.7.7+git20080807-0ubuntu13) intrepid; urgency=low

  * 048_handle_sync_alarm_events_on_screens_other_than_the_last.patch
    - fixes a bug that caused delays on one xscreen when using compiz.
      Patch from Aaron Plattner (upstream Compiz commit 5031a1f9).
      (LP: #242735)

 -- Tobias Domhan <email address hidden> Sun, 05 Oct 2008 21:51:55 +0200

Changed in compiz:
status: Fix Committed → Fix Released
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