[mythtv-users] Resetting NVIDIA Video Configuration (xorg.conf)

[Peter Bennett]

On 2/22/19 8:51 AM, Gary Raposo wrote:
> Hello all.
>
> I'm hoping to mine the collective knowledge of the mailing list to 
> come up with a reliable configuration for my system. Right now I'm 
> having some issues with tearing on playback. I've updated the OS and 
> drivers and fiddled with my configuration files to the point where I'm 
> not too sure if I've done more damage to my system than good! 
> Hopefully there's an established baseline configuration out there for 
> my set up that I can use as a reset.
>
> System:
> - ASUS P8Z77-V LK motherboard with Intel i5-3470 CPU and 8GB RAM
> - ASUS GeForce GT 640 video card
> - Fedora 29 (4.20.8-200.fc29.x86_64)
> - mythtv-29.1-25.39.20181004git74fff5c285.fc29.x86_64 (from RPM Fusion 
> repository)
> - NVIDIA 410.93 drivers (directly from NVIDIA web site)
>
> I've got an HDMI connection from the video card to the monitor for 
> 1080p video only (audio is handled via a receiver connected over an 
> optical cable).
>
> MythTV has been configured to use the VDPAU High Quality playback 
> profile. This problem is not specific to VDPAU as the tearing is 
> present to various degrees regardless of what playback profile I use. 
> Log files don't seem to indicate an errors loading drivers or during 
> playback as far as I can tell.
>
> I've tried resetting xorg.conf using the nvidia-xconfig utility but 
> the tearing problem hasn't cleared up. I'm thinking this is a pretty 
> basic set up and that I've simply missed a key setting (or three).
>
> Can anyone with the same/similar set up share their xorg.conf and/or 
> xorg.conf.d/* files with me?
>
> Thanks!
> Gary
>
>

Have you turned off composite? That is sometimes required with NVidia to 
prevent tearing.

sudo nvidia-xconfig --no-composite

This may cause unity desktop to fail to start. I recommend using xfce 
desktop or Xubuntu if that happens.

Peter