[mythtv-users] Persistent horizontal artifact ? Interlace artifact.

[Bob Sully]

> Message: 27
> Date: Mon, 21 Sep 2009 05:51:44 -0400
> From: William <william_munson at comcast.net>
> Subject: Re: [mythtv-users] Persistent horizontal artifact ? Interlace
> 	artifact.
>
> Oz wrote:
>>
>> Hi,
>>
>> I would appreciated any help with a problem that I have not been able
>> to solve.
>>
>> I have a moving horizontal line artifact when there is a fast moving
>> scene. It goes away when freezing the image.
>> It is almost as if the computer cannot keep up with the motion. But
>> the CPU is far less then 100% It is in the teens
>>
>> OS: Ubuntu 9.04  Mythtv 0.22 Video card Nvidia 8600gts or 9600gt
>>
>> I have the same problem if the source image is in 720p or 1080i.
>> either from ATSC (1080i) tuner card or HDPVR(1080i or 720p) as tuner.
>>
>> The Nvidia mode is setup to 1080p (the TV is 1080p)
>>   It is either auto detected or because of the option in Xorg.conf :
>> Option         "metamodes" "DFP-1: 1920x1080_60 +0+0"
>>
>> VPDAU is enabled.
>> The problem occurs in all deinterlaced options. The problem occurs in
>> 720p without deintrlacing.
>>
>> If I set the nvidia mode to 1080i will this solve the problem. (what
>> is the metamode option for 1080i, on dvi output?)
>>
>> -Thanks
>
> Sounds like video tearing. Try adding the disable composite flag to your
> xorg.conf. Sorry I am not where I can pull up the exact command.
>
> William

Section "Extensions"
    Option "Composite" "Disable"
EndSection

Unfortunately, this doesn't fix it for me.  It's not terrible but still
occurs occasionally, even though I'm using VDPAU and JYA's latest stable
updates.

Supposedly, this was fixed with the 185-series nVidia drivers, but these
have had other issues, so I's still using 180-xx and being patient...  ;-)

Bob
-- 
________________________________________
Bob Sully - Simi Valley, California, USA
http://www.malibyte.net
http://www.malibyte.com