[mythtv-users] Video quality on 0.28 worse than it was on 0.21

[Stephen Worthington]

On Fri, 24 Aug 2018 07:20:58 -0700, you wrote:

>Clearly the drivers were not installed correctly as shown
>*configuration: driver=nouveau latency=0*
>
>And
>*more: stat of /etc/modprobe.d/nvidia-graphics-drivers.conf failed: No such
>file or directory*
>
>I installed using the GUI that was something like Other Drivers, an option
>that somehow disappeared from the menu but shows up under the software
>update tab now.
>
>Initially I autoinstalled the 340 driver, which was a disaster for the 8600
>card. I then purged the system and installed the 304 driver manually, still
>had issues and went back to the 6200 card, which worked better but clearly
>the nvidia drivers are not there.
>
>I saw instructions to use the Administrator tab to finish the install but I
>don't have that tab so I went to the tab that lists the driver options and
>saw that 304 was listed and checked as installed and the the nouveau was
>there as an option.  I then selected the nouveau and installed that
>followed by selecting the 304 and reinstalling it.  I thought that would
>allow the system to do a proper install but obviously I was wrong.
>
>The only thing I can think of at this point is to purge the system of
>nevidia drivers and then do the autoselect again with the 6200 card so that
>the 304 driver will be selected.
>
>Allen

I just looked up the 6600 in the Nvidia documentation, and as expected
it does not support VDPAU at all.  So with that card, there is no
point in installing the Nvidia drivers.  The 8600GT supports VDPAU
feature set A, which means it can do most of what MythTV wants, except
probably not the best deinterlacing modes.

Note that in order to use VDPAU, as well as installing the Nvidia
drivers, you have to configure mythfrontend to use a VDPAU mode.  See
the MythTV Wiki for the setup for this.  Without configuring
mythfrontend for VDPAU, output will be relying on the CPU only to do
the processing and the results will be bad on 720p or above unless the
CPU is new enough and powerfull enough to cope.