[mythtv-users] mythfrontend jerky with motion on dual-monitor setup

[Stephen Worthington]

On Wed, 16 Mar 2022 07:27:46 -0400, you wrote:

>I have a workstation with 2 FHD monitors. This is convenient for many
>things but watching mythfrontend on one monitor while browsing the web is
>also a use case for me.
>
>I have noticed with V32 that this arrangement has jerky video when viewing
>an HD 1080i recording that it didn't have with v32.
>
>This workstation is a frontend only and it's based on a Ryzen 5 3600, 16GB
>RAM, and an Nvidia GP108 (GeForce GT 1030) video card.  The OS is Kubuntu
>21.10 and it seems to have the Nvidia drive installed but to me the
>Additional Drivers page is odd. It says at the bottom that No proprietary
>drivers are in use and says the driver is manually installed. Everything is
>grayed out.
>
>How can I fix this and is this most likely the source of my video problem?
>
>Jim A

Check your /var/log/Xorg.0.log file to see if the Nvidia drivers are
actually being used.  If not, try purging the Nvidia packages
completely and reinstalling them.  It is best to reboot after the
purge, but you need to have ssh access from another PC to then do the
reinstall as you are unlikely to get a GUI screen.

If the Nvidia drivers are actually being used, the log file should
show a line like this:

[    35.266] (--) NVIDIA(GPU-0): DELL 2707WFP (DFP-1): connected

when your monitor connects to the GPU.  And there will be heaps of
other lines with "NVIDIA" in all capitals telling you what the Nvidia
drivers are doing.