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

[Michael Buchner]

-------- Original-Nachricht --------
> Datum: Wed, 30 Jan 2008 01:35:06 +0100
> Von: Xavier Bachelot <xavier at bachelot.org>
> An: Buchner Michael <buggi at gmx.at>
> CC: openchrome-users at openchrome.org
> Betreff: Re: [Openchrome-users] openchrome - epia SN18000G - resolution	problems

> Buchner Michael wrote:
> > Buchner Michael wrote:
> >> Xavier Bachelot wrote:
> >>> 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
> >>>
> >> Hi,
> >>
> >> TV is connected via VGA cable. I've used both settings during my 
> >> experiments with xorg, but right now it's not included anymore. It's 
> >> now stripped down to a very basic and simple xorg.conf (see attached)
> >>
> >> thanks
> >>
> 
> > does anyone have some hints for me? ;)
> 
> The conf looks good.
> How did you generate your modeline ? I suggest using cvt.
> Did you try with a reduced blanking modeline ? ( This needs an 
> additional option in the xorg conf, something like "ReduceAllowed", 
> serach the mailing lists' archives).
> Did you try with 1366x768 ? 1366x768 with reduced blanking ?
> 
> Regards,
> Xavier
> 
> 

hi,

yeah I did try with 1366x768 but not with reduced blanking ... will try this tonight when I'm back home.

thanks

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