[Openchrome-users] TV out on a CN700 (vt1622a)

[Matteo Brusa]

Xavier Bachelot wrote:
> Matteo Brusa wrote:
>> Hi,
>> i read on the chip specs that it's capable of SDTV output; however i 
>> could not get such a resolution from the composite output.
>> Are there any special settings for X?
>>
> You need to set some options in xorg.conf :
> 
> Option "TVType" "string"
> 
> Where string is one of the following TV standard :
> NTSC ; PAL ; 480P ; 576P ; 720P ; 1080I

ATM the VT1622A does not support 576P which as far i understand corresponds to the SDTV mode 
indicated by VIA in this link (correct me if i'm wrong):
http://www.via.com.tw/en/resources/pressroom/2003_archive/pr030806vt1622a.jsp

I noticed that the TVOutput option is redundant, since X autodetects the plugged video output.
I also found useful to enable the deinterlacer when showing computer generated images:
Option "TVDeflicker" "2" in the device section as well.

Now i'm experiencing a weird problem: some "old" blocks in the upper right corner of the screen 
appears; it looks like data from the previous frame. Playing the same video in loop, sometime the 
problem happens, sometime not. What could it be?

Thanks in advance,
Matteo