I have not been able to figure out yet how to start up the frontend with the -vplayback switch, there doesn't seem to be the equivallent to 'mythtv-backend start'.
However I did look at the .xsession-errors file. There are a huge number of error messages in there but I am not sure which ones to post here, so I will post the whole lot for my last session (sorry if it makes the post rather long).
One interesting thing is that I did see a message to suggest that OpenGL was being used (look for video timing method) ..
Setting default value
2007-05-10 18:45:50.380 Using runtime prefix = /usr
2007-05-10 18:45:50.384 DPMS is disabled.
2007-05-10 18:45:50.452 New DB connection, total: 1
2007-05-10 18:45:50.456 Connected to database 'mythconverg' at host: localhost
2007-05-10 18:45:50.458 Total desktop dim: 800x600, with 1 screen[s].
2007-05-10 18:45:50.460 Using screen 0, 800x600 at 0,0
2007-05-10 18:45:50.476 Current Schema Version: 1160
2007-05-10 18:45:50.477 mythfrontend version: 0.20.20060828-3
www.mythtv.org
2007-05-10 18:45:50.477 Enabled verbose msgs: important general
2007-05-10 18:45:51.129 Total desktop dim: 800x600, with 1 screen[s].
2007-05-10 18:45:51.130 Using screen 0, 800x600 at 0,0
2007-05-10 18:45:51.130 Switching to wide mode (blootube-wide)
2007-05-10 18:45:51.168 Using the Qt painter
2007-05-10 18:45:51.411 New DB connection, total: 2
2007-05-10 18:45:51.412 Connected to database 'mythconverg' at host: localhost
Could not initialize /dev/input/js0
open: No such file or directory
ioctl JSIOCGAXES: Bad file descriptor
2007-05-10 18:45:51.674 Loading from: /usr/share/mythtv/themes/blootube-wide/base.xml
2007-05-10 18:45:51.770 Loading from: /usr/share/mythtv/themes/default/base.xml
2007-05-10 18:45:51.809 Registering Internal as a media playback plugin.
2007-05-10 18:45:51.885 Registering MythDVD DVD Media Handler as a media handler ext()
2007-05-10 18:45:51.903 Mediamonitor: Adding /dev/cdrom
no record for '/block/hdc/device' in database
no record for '/block/hdc/holders' in database
no record for '/block/hdc/queue' in database
no record for '/block/hdc/slaves' in database
no record for '/block/hdc/subsystem' in database
2007-05-10 18:45:51.981 Mediamonitor: AddDevice() -- Not adding '/dev/hdc', it appears to be a duplicate.
2007-05-10 18:45:51.983 Registering MythDVD VCD Media Handler as a media handler ext()
2007-05-10 18:45:52.037 Registering MythGallery Media Handler 1/2 as a media handler ext()
2007-05-10 18:45:52.037 Registering MythGallery Media Handler 2/2 as a media handler ext(gif,jpg,png)
2007-05-10 18:45:52.037 MonitorRegisterExtensions(0x100, gif,jpg,png)
Failed to run 'cdrecord --scanbus'
2007-05-10 18:45:53.856 Registering MythMusic Media Handler 1/2 as a media handler ext()
2007-05-10 18:45:53.856 Registering MythMusic Media Handler 2/2 as a media handler ext(ogg,mp3,aac,flac)
2007-05-10 18:45:53.856 MonitorRegisterExtensions(0x40, ogg,mp3,aac,flac)
Failed to find network interface eth0
SIP listening on IP Address :5060 NAT address
SIP: Cannot register; proxy, username or password not set
Destroying SipFsm object
2007-05-10 18:45:54.394 Starting media monitor.
2007-05-10 18:47:37.100 Connecting to backend server: 127.0.0.1:6543 (try 1 of 5)
2007-05-10 18:47:37.101 Using protocol version 31
2007-05-10 18:47:37.108 TV: Attempting to change from None to WatchingLiveTV
2007-05-10 18:47:37.108 Using protocol version 31
[mpeg @ 0xb73657f0]Parser not found for Codec Id: 94210 !
2007-05-10 18:47:38.851 AFD: Opened codec 0x8d853e0, id(MPEG2VIDEO) type(Video)
2007-05-10 18:47:38.866 AFD: Opened codec 0x8d86860, id(MP2) type(Audio)
2007-05-10 18:47:38.971 Opening OSS audio device '/dev/dsp'.
2007-05-10 18:47:38.997 VideoOutputXv: XvMCTex: Init failed
2007-05-10 18:47:38.998 VideoOutputXv: XVideo Adaptor Name: 'NV17 Video Texture'
X Error: BadMatch (invalid parameter attributes) 8
Major opcode: 142
Minor opcode: 14
Resource id: 0x171
2007-05-10 18:47:39.484 TV: Changing from None to WatchingLiveTV
2007-05-10 18:47:39.491 The realtime priority setting is not enabled.
2007-05-10 18:47:39.627 Video timing method: SGI OpenGL
2007-05-10 18:47:49.360 Using protocol version 31
2007-05-10 18:47:56.330 RingBuf(/myth/tv/1621_20070510184749.mpg): Invalid file (fd -1) when opening '/myth/tv/1621_20070510184749.mpg'.
2007-05-10 18:47:56.336 Could not bind to UDP notify port: 6948
2007-05-10 18:47:56.336 NVP: Disabling Audio, params(-1,2,44100)
2007-05-10 18:47:56.338 VideoOutputXv: XvMCTex: Init failed
2007-05-10 18:47:56.338 VideoOutputXv: XVideo Adaptor Name: 'NV17 Video Texture'
X Error: BadMatch (invalid parameter attributes) 8
Major opcode: 142
Minor opcode: 14
Resource id: 0x171
2007-05-10 18:47:56.741 The realtime priority setting is not enabled.
2007-05-10 18:47:56.789 VideoOutputXv: XvMCTex: Init failed
2007-05-10 18:47:56.789 VideoOutputXv: XVideo Adaptor Name: 'NV17 Video Texture'
X Error: BadMatch (invalid parameter attributes) 8
Major opcode: 142
Minor opcode: 14
Resource id: 0x171
2007-05-10 18:47:56.925 Video sync method can't support double framerate (refresh rate too low for bob deint)
2007-05-10 18:47:56.929 Video timing method: SGI OpenGL
2007-05-10 18:47:57.236 AFD: Opened codec 0x9d65f60, id(MPEG2VIDEO) type(Video)
2007-05-10 18:47:57.239 AFD: Opened codec 0x9d7b090, id(AC3) type(Audio)
2007-05-10 18:47:57.241 Opening OSS audio device '/dev/dsp'.
2007-05-10 18:47:57.242 NVP: Enabling Audio
2007-05-10 18:47:58.315 NVP: prebuffering pause
2007-05-10 18:47:59.366 NVP: prebuffering pause
2007-05-10 18:48:00.334 NVP: prebuffering pause
2007-05-10 18:48:28.139 XMLParse::LoadTheme using /usr/share/mythtv/themes/blootube-wide/ui.xml
2007-05-10 18:48:29.801 NVP: prebuffering pause
2007-05-10 18:49:05.544 NVP: prebuffering pause
2007-05-10 18:49:06.320 msg: On same multiplex...
2007-05-10 18:49:06.436 NVP: prebuffering pause
2007-05-10 18:49:07.587 NVP: Prebuffer wait timed out 10 times.
2007-05-10 18:49:08.843 AFD: Opened codec 0x9d65f60, id(MPEG2VIDEO) type(Video)
2007-05-10 18:49:08.849 AFD: Opened codec 0x95de170, id(AC3) type(Audio)
2007-05-10 18:49:09.656 NVP: Prebuffer wait timed out 10 times.
2007-05-10 18:49:12.092 NVP: prebuffering pause
2007-05-10 18:49:13.527 NVP: prebuffering pause
2007-05-10 18:49:21.431 XMLParse::LoadTheme using /usr/share/mythtv/themes/blootube-wide/ui.xml
2007-05-10 18:49:22.052 NVP: prebuffering pause
2007-05-10 18:49:39.813 Using protocol version 31
2007-05-10 18:49:41.255 Could not bind to UDP notify port: 6948
[mpeg @ 0xb73657f0]Parser not found for Codec Id: 94210 !
2007-05-10 18:49:41.409 AFD: Opened codec 0x9f43d60, id(MPEG2VIDEO) type(Video)
2007-05-10 18:49:41.410 AFD: Opened codec 0x8d86850, id(MP2) type(Audio)
2007-05-10 18:49:41.504 Opening OSS audio device '/dev/dsp'.
2007-05-10 18:49:41.511 VideoOutputXv: XvMCTex: Init failed
2007-05-10 18:49:41.511 VideoOutputXv: XVideo Adaptor Name: 'NV17 Video Texture'
X Error: BadMatch (invalid parameter attributes) 8
Major opcode: 142
Minor opcode: 14
Resource id: 0x171
2007-05-10 18:49:41.993 The realtime priority setting is not enabled.
2007-05-10 18:49:42.138 Video timing method: SGI OpenGL
2007-05-10 18:49:47.879 NVP: prebuffering pause
2007-05-10 18:49:48.258 XMLParse::LoadTheme using /usr/share/mythtv/themes/blootube-wide/ui.xml
2007-05-10 18:49:56.637 NVP: prebuffering pause
2007-05-10 18:50:08.738 NVP: prebuffering pause
2007-05-10 18:50:49.013 XMLParse::LoadTheme using /usr/share/mythtv/themes/blootube-wide/ui.xml
2007-05-10 18:51:20.370 NVP: prebuffering pause
2007-05-10 18:51:21.010 NVP: prebuffering pause
2007-05-10 18:51:27.388 XMLParse::LoadTheme using /usr/share/mythtv/themes/blootube-wide/ui.xml
2007-05-10 18:51:27.949 NVP: prebuffering pause
2007-05-10 18:52:01.875 NVP: prebuffering pause
2007-05-10 18:52:05.066 TV: Attempting to change from WatchingLiveTV to None
QObject::disconnect: Unexpected null parameter
2007-05-10 18:52:05.559 TV: Changing from WatchingLiveTV to None
if someone could please let me know how to start the frontend with the -vplayback switch I would be greateful,
thanks,
Kevin