Comment 1 for bug 103191

There currently is support for gnome-screensaver in a patch that I added
last year. Are you sure you started gnome-screensaver *prior* to starting
mythtv-frontend?

Take a look at the output of mythfrontend when starting:
supermario@portablemario:~$ mythfrontend -O ThemePainter=qt
2007-04-05 09:22:59.437 Using runtime prefix = /usr
2007-04-05 09:22:59.453 Gnome-Screensaver support enabled
2007-04-05 09:22:59.453 DPMS is active.
2007-04-05 09:22:59.476 New DB connection, total: 1
2007-04-05 09:22:59.486 Connected to database 'mythconverg' at host:
mythdell
2007-04-05 09:22:59.487 Total desktop dim: 1600x1200, with 1 screen[s].
2007-04-05 09:22:59.490 Using screen 0, 1600x1200 at 0,0
2007-04-05 09:22:59.513 Setting 'ThemePainter' being forced to 'qt'
2007-04-05 09:22:59.515 Current Schema Version: 1160
2007-04-05 09:22:59.516 mythfrontend version: 0.20.20060828-3 www.mythtv.org
2007-04-05 09:22:59.516 Enabled verbose msgs: important general
2007-04-05 09:23:00.114 Total desktop dim: 1600x1200, with 1 screen[s].
2007-04-05 09:23:00.118 Using screen 0, 1600x1200 at 0,0
2007-04-05 09:23:00.120 Switching to square mode (MythCenter)
2007-04-05 09:23:00.239 Using the Qt painter
mythtv: could not connect to socket
mythtv: Connection refused
lirc_init failed for mythtv, see preceding messages
2007-04-05 09:23:00.762 Joystick disabled.
2007-04-05 09:23:01.382 Loading from:
/usr/share/mythtv/themes/G.A.N.T./base.xml
2007-04-05 09:23:01.500 Loading from:
/usr/share/mythtv/themes/default/base.xml
2007-04-05 09:23:01.749 Registering Internal as a media playback plugin.
2007-04-05 09:23:01.873 Registering MythGallery Media Handler 1/2 as a media
handler ext()
2007-04-05 09:23:01.875 Registering MythGallery Media Handler 2/2 as a media
handler ext(gif,jpg,png)