[mythtv-users] s-video resolution

[Ma Begaj]

2008/7/14 Wouter van Atteveldt <wouter at 2at.nl>:
> Dear List,
>
> After failing for a couple of weeks to get the dvi out to work from my
> commell lv-675D mobo with integrated intel 845 graphics and s-video and dvi
> out, I decided to take a step back and see if I can get the s-video to work.
> After connecting the s-video to the yellow single video jack (part of the
> video/l-audio/r-audio connectors), I immediately got an image on both BIOS
> and Ubuntu. Ubuntu started in low-res mode with the image all weird, but
> after fiddling with the xorg.conf and downloading 915resolution it suddenly
> worked.
>
> Two problems remain:
> - on booting, it goes into 640x480 mode which fills only a small portion of
> my TV screen and is almost unworkable as desktop (most config screens don't
> show the buttons, etc.). In my xorg.conf I specified a bunch of modes, but
> it seems to ignore those. Using xrandr I can only see the 640x480 mode, I
> can manually add a 800x600 mode but it refuses to switch into that, giving a
> crtc error (see below)
> - if I go into and out of hibernation, it does go into 800x600 mode.
> However, it "wraps around" so the left 150 or so pixels are "shared" between
> the left and right hand side of the screen. If I try the same for the
> 'correct' resolution for my tv (W-XGA 1366x768) it refuses to switch to that
> mode, the same for 1280x1024 (do I have to convince the video driver to
> accept that mode somehow). Strange enough, restarting X by killing it from a
> console does not produce the same behaviour, it simply goes back to 640x480
> only. Also strange, if I do not add the 800x600 but only the 1366x768 it
> still goes into 800x600 (which is the resolution specified in my xorg.conf).
>
> I've used 915resolution to add the 1366x768 mode, but that does not change
> anything. I've also set the resolution in my xorg.conf to this value, but
> that also does not seem to change anything.
>
> My computer is based on a Commell lv-675d mobo with integrated intel
> graphics, and I have a JVC LCD television, I think the LT-32A85B.
>
> Any comments on how to fix this or debug this would be greatly appreciated.
>
> My xorg.conf is attached, three log files are posted at
> http://www.cs.vu.nl/~wva/upload/Xorg.log.zip : after coming out of
> hibernation the first time (after adding 800x600) and the second time (after
> adding 1366x768) and after a clean reboot after fiddling with the xorg.conf
> and 915resolution)
>
> Thanks!
>
> -- Wouter
>
>
> wva at huis:~$ xrandr
> Screen 0: minimum 640 x 480, current 640 x 480, maximum 640 x 480
> default connected 640x480+0+0 (normal left inverted right) 0mm x 0mm
>    640x480        60.0*
> wva at huis:~$ gtf 800 600 60
>   # 800x600 @ 60.00 Hz (GTF) hsync: 37.32 kHz; pclk: 38.22 MHz
>   Modeline "800x600_60.00"  38.22  800 832 912 1024  600 601 604 622  -HSync
> +Vsync
> wva at huis:~$ xrandr --newmode "800x600" 38.22  800 832 912 1024  600 601 604
> 622  -HSync +Vsync
> wva at huis:~$ xrandr --addmode default "800x600"
> wva at huis:~$ xrandr --output default --mode "800x600"
> xrandr: Configure crtc 0 failed
> wva at huis:~$ xrandr
> Screen 0: minimum 640 x 480, current 640 x 480, maximum 800 x 600
> default connected 640x480+0+0 (normal left inverted right) 0mm x 0mm
>    640x480        60.0*
>    800x600        60.0
>

I can only give you one "mee to" ... I have an old Acer notebook with
s-video (Intel graphics) and it has the
same problem. I was never able to get anything except 640x480. I
searched a lot, but without any hint.
915resolution did not help.

I think I can remember that xrandr was even showing that 800x600 was
used, but I still could see black border
around the picture. I will check it today again using your commands
although I already have other frontend.