https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/428884 seems to point
to the core issue.
'gnome-screensaver-command --poke' sends a "SimulateUserActivity"
message to the screensaver. Checking gs-monitor.c, we find the
following:
--- gnome-screensaver-2.24.0/src/gs-monitor.c 2008-08-20 20:53:34.000000000
-0500
+++ gnome-screensaver-2.28.0/src/gs-monitor.c 2009-08-19 18:19:14.000000000
-0500
@@ -231,9 +186,7 @@
static void
gs_monitor_simulate_user_activity (GSMonitor *monitor)
{
- /* in case the screen isn't blanked reset the
- idle watcher */
- gs_watcher_reset (monitor->priv->watcher);
+ /* FIXME: reset the xsync timer? */
/* request that the manager unlock -
will pop up a dialog if necessary */
NOTE: I've only included the interesting porition here. The complete
diff is attached.
It appears that the mechanism for simulating user activity has been
stripped from gnome-screensaver-command. I suspect that the new FIXME is
a requirement of getting idle time from Xorg, since the gs_watcher_reset
function is no longer present in gs-watcher-x11.c.
I'm going to look into workarounds, since I don't have the expertise to
fix this issue myself. If I were a new user encountering this kind of
behavior, however, I think I'd be discouraged from using Ubuntu. I
strongly suggest that this issue be corrected for Lucid LTS. Otherwise
we need to consider alternatives to gnome-screensaver.
** Attachment added: "diff between Jaunty and Karmic versions of gs-monitor.c"
http://launchpadlibrarian.net/35978040/gs-monitor.c.diff
--
Screensaver activates during video playback
https://bugs.launchpad.net/bugs/474175
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