** Updated**
Seems I found my problem.... HARDWARE FAILURE!!
Should have picked up on it sooner, but it turns out the powersupply is the culprit. Been having speed issues lately and last night the box died completely.
Got to find myself an ATE power supply as none of my spares fit this case. I could get it on warranty, but it was a cheap ass one and I would prefer to get decent one now.
So for anyone having random issues, save yourself the hair and go get a decent powersupply, they are almost always the root of all evil (I tell people this all the time, I should follow my own advice!

)
** Updated **
Hi All,
Well I've spent a bit of time trying to get things working at 1920x1200. I can get X to load at this resolutions. But just after pre-scaling Mythfrontend drops out. No Errors, No Reason, No nothing, Just Flicks back to the Knoppmyth Desktop. Everything runs fine at 1680x1050 though, which is ok as the monitor doesn't seem to complain or look funny, as the input uses a DVI - HDMI cable (but I would prefer to run at its native res).
Machine Specs:
ASUS P4P800E Deluxe
Nvidia GeForce 5500 256MB
1 GB Ram
80GB Pata for /, /boot and swap. Formatted ext3,ext2 and swap
120GB Sata for /myth formatted in XFS and running on LVM
AC97 Sound (Onboard)
Viewsonic VX2835wm 28" Widescreen LCD
Output of xorg at 1920x1200
Code:
(II) Setting vga for screen 0.
(**) NVIDIA(0): Depth 24, (**) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Option "ModeValidation" "NoMaxPClkCheck"
(**) NVIDIA(0): Enabling RENDER acceleration
(II) NVIDIA(0): NVIDIA GPU GeForce FX 5500 at PCI:1:0:0
(--) NVIDIA(0): VideoRAM: 262144 kBytes
(--) NVIDIA(0): VideoBIOS: 04.34.20.87.00
(II) NVIDIA(0): Detected AGP rate: 8X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce FX 5500 at PCI:1:0:0:
(--) NVIDIA(0): ViewSonic VX2835wm (DFP-0)
(--) NVIDIA(0): ViewSonic VX2835wm (DFP-0): 135.0 MHz maximum pixel clock
(--) NVIDIA(0): ViewSonic VX2835wm (DFP-0): Internal Single Link TMDS
(II) NVIDIA(0): Mode Validation Overrides for ViewSonic VX2835wm (DFP-0):
(II) NVIDIA(0): NoMaxPClkCheck
(II) NVIDIA(0): Assigned Display Device: DFP-0
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "1920x1200"
(II) NVIDIA(0): Virtual screen size determined to be 1920 x 1200
(++) NVIDIA(0): DPI set to (100, 100); computed from -dpi X commandline option
(--) Depth 24 pixmap format is 32 bpp
(II) do I need RAC? No, I don't.
End of Mythfront.log
Code:
2007-10-24 15:27:34.013 Current Schema Version: 1160
2007-10-24 15:27:34.034 mythfrontend version: 0.20.20060828-4 www.mythtv.org
2007-10-24 15:27:34.034 Enabled verbose msgs: important general
2007-10-24 15:27:35.228 Total desktop dim: 1920x1200, with 1 screen[s].
2007-10-24 15:27:35.229 Using screen 0, 1920x1200 at 0,0
2007-10-24 15:27:35.230 Switching to square mode (G.A.N.T.)
2007-10-24 15:27:35.327 Using the Qt painter
Could not initialize /dev/input/js0
open: No such file or directory
ioctl JSIOCGAXES: Bad file descriptor
2007-10-24 15:27:36.904 Loading from: /usr/share/mythtv/themes/G.A.N.T./base.xml
2007-10-24 15:27:37.011 Loading from: /usr/share/mythtv/themes/default/base.xml
2007-10-24 15:27:37.138 Registering Internal as a media playback plugin.
2007-10-24 15:27:37.315 Registering MythDVD DVD Media Handler as a media handler ext()
2007-10-24 15:27:37.338 Mediamonitor: Adding /dev/cdrom
2007-10-24 15:27:37.406 Mediamonitor: AddDevice() -- Not adding '/dev/hdc', it appears to be a duplicate.
2007-10-24 15:27:37.411 Registering MythDVD VCD Media Handler as a media handler ext()
2007-10-24 15:27:37.561 Registering MythGallery Media Handler 1/2 as a media handler ext()
2007-10-24 15:27:37.561 Registering MythGallery Media Handler 2/2 as a media handler ext(gif,jpg,png)
2007-10-24 15:27:37.561 MonitorRegisterExtensions(0x100, gif,jpg,png)
Failed to run 'cdrecord --scanbus'
adding: ATAPI:0,0,0 -- DVD-RW DVR-108
2007-10-24 15:27:39.722 Registering MythMusic Media Handler 1/2 as a media handler ext()
2007-10-24 15:27:39.722 Registering MythMusic Media Handler 2/2 as a media handler ext(ogg,mp3,aac,flac)
2007-10-24 15:27:39.722 MonitorRegisterExtensions(0x40, ogg,mp3,aac,flac)
SIP listening on IP Address 10.10.10.5:5060 NAT address 10.10.10.5
SIP: Cannot register; proxy, username or password not set
2007-10-24 15:27:40.801 Starting media monitor.
2007-10-24 15:27:41.261 Media status changed... New status is: MEDIASTAT_USEABLE old status was MEDIASTAT_NOTMOUNTED
2007-10-24 15:27:41.261 Posting MediaEvent
2007-10-24 15:27:46.000 Found a handler
and on the command line:
Code:
sh-3.1$ mythfrontend -v important,general -l /var/log/mythtv/mythfrontend.log
2007-10-24 15:27:33.907 Using runtime prefix = /usr
2007-10-24 15:27:33.914 DPMS is disabled.
2007-10-24 15:27:33.945 New DB connection, total: 1
2007-10-24 15:27:33.951 Connected to database 'mythconverg' at host: localhost
2007-10-24 15:27:33.954 Total desktop dim: 1920x1200, with 1 screen[s].
2007-10-24 15:27:33.957 Using screen 0, 1920x1200 at 0,0
Killed
sh-3.1$
Guessing it might be time to do the inevitable upgrade to R5F27, but would prefer to wait till I got a bit more spare time.
TIA
Leon