Ubuntu
gnome-screensaver package

gnome-screensaver flickers every 30 seconds

Bug #44579 reported by Allison Karlitskaya
10
Affects Status Importance Assigned to Milestone
gnome-screensaver (Ubuntu)
Fix Released
Medium
Unassigned

Bug Description

Binary package hint: gnome-screensaver

gnome-screensaver flickers every 30 seconds. if you have a screensaver like "Swirl" this causes the entire screen to go black until it gets repainted (which takes a while).

To see:

1. Use swirl as your screensaver.
2. Lock the screen.
3. Wait 30 seconds.

Revision history for this message
Allison Karlitskaya (desrt) wrote :

Ok. The problem is caused by the so-called "watchdog" timer. It calls gtk_window_present every 30 seconds. gtk_window_present includes a call to gdk_window_show which causes the flicker.

Revision history for this message
Allison Karlitskaya (desrt) wrote : debdiff to fix the problem

This fixes the problem by calling the gdk window focus function directly (which results in gdk_window_show not being called and therefore no flicker).

Revision history for this message
Oliver Grawert (ogra) wrote :

can you uncheck /apps/nautilus/preferences/show_desktop in gconf-editor and run /usr/lib/xscreensaver/swirl -root to make sure thats really a gnome-screensaver bug ?

Revision history for this message
Allison Karlitskaya (desrt) wrote :

I'm quite positive that it's a gnome-screensaver bug. You can see flickering with other hacks too -- the only different is that with swirl the display is very static and doesn't get updated frequently.

The attached patch actually fixes the problem (which, btw does not occur when I do what you describe above).

Revision history for this message
Allison Karlitskaya (desrt) wrote : new version to deal with new ubuntuversion number

.

Revision history for this message
Allison Karlitskaya (desrt) wrote :

Uploaded by ogra (thanks).

Changed in gnome-screensaver:
status: Unconfirmed → Fix Released
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