[Openchrome-users] openchrome - epia SN18000G - resolution problems

[Xavier Bachelot]

Buchner Michael wrote:
> Hi there,
> 
> I've a problem with the setup mentioned in the topic and I'm running out 
> of ideas ;( Maybe one of you can help me or at least give me some hints 
> what to do ...
> 
> Well as you can imagine I'm using openchrome as driver for my graphics 
> card. My Mainboard is the via epia SN18000G vith VIA VT8251 South Bridge 
> and CN896 North Bridge. 
> (http://www.via.com.tw/en/products/mainboards/motherboards.jsp?motherboard_id=550) 
> 
> I've played a lot to get Xorg running a now it basically is, BUT with 
> some problems. i want to connect my LCD TV Screen to be used as monitor. 
> The TV's user manual says that the resolution is 1366x768 with 60Hz.
> within the xorg log file I can see this:
> (**) CHROME(0): *Mode "1280x720": 59.4 MHz (scaled from 0.0 MHz), 37.9 
> kHz, 50.1
>  Hz
> (II) CHROME(0): Modeline "1280x720"   59.42  1280 1312 1536 1568  720 
> 735 741 75
> 7
>  which is the supported resolution according to edid (?)
> 
> If I use the modeline manually (or another one for 1366x720 at 60) the 
> resolution is ok but I get some kind of flickering. If I don't use any 
> modeline the resolution is at 1280x720 according to xvidtune but the 
> picture is not fitting the monitor. it seems to feel that my screen is 
> bigger in either direction as it actually is. but there is no flickering ...
> 
> I also should mention that I need to use the
>      Option          "DDC" "false"
> within the Screen Section of xorg.conf. Otherwise I only get 1024x768.
> 
> I really can't remember what I've already tried ... way too much ;)
> Does anyone have any idea?
> 
> Thanks a lot
> 
How is your TV connected to the board ?
Please post your xorg conf and xorg log (compressed). My bet would be 
either you are using Option "VBEModes" either you are using Option 
"ActiveDevice" "LCD".

Regards,
Xavier