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

[Stephen Worthington]

On Sat, 25 Aug 2018 06:15:37 -0700, you wrote:

>On Fri, Aug 24, 2018 at 10:10 AM, Stephen Worthington <
>stephen_agent at jsw.gen.nz> wrote:
>
>> On Fri, 24 Aug 2018 09:57:42 -0700, you wrote:
>>
>>
>>
>> Take a look at /var/log/Xorg.0.log.  It may tell you why nouveau is
>> still loading instead of Nvidia.  It is looking like the 304 drivers
>> are not actually compatible with the 6200 card.
>>
>
>allen at MythNew:~$ more /var/log/Xorg.0.log | grep nvidia
>[    23.838] (II) LoadModule: "nvidia"
>[    23.838] (WW) Warning, couldn't open module nvidia
>[    23.838] (II) UnloadModule: "nvidia"
>[    23.839] (II) Unloading nvidia
>[    23.839] (EE) Failed to load module "nvidia" (module does not exist, 0)
>[    23.839] (==) Matched nvidia as autoconfigured driver 0
>[    23.839] (II) LoadModule: "nvidia"
>[    23.839] (WW) Warning, couldn't open module nvidia
>[    23.839] (II) UnloadModule: "nvidia"
>[    23.839] (II) Unloading nvidia
>[    23.839] (EE) Failed to load module "nvidia" (module does not exist, 0)
>
>Same output using the 8600 video card.  Perhaps the lack of the alias
>statements in the auto generated nvidia 304 blacklist file has something to
>do with it as the driver is called nvidia-304.
>
>Allen

No, the name of the driver file does not have the version number in
it.  For comparison, my mother's MythTV box uses the 304 drivers and
this is what it shows when the driver loads correctly:

[    28.886] (II) LoadModule: "nvidia"
[    28.886] (II) Loading
/usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so
[    29.562] (II) Module nvidia: vendor="NVIDIA Corporation"
[    29.562]    compiled for 4.0.2, module version = 1.0.0
[    29.562]    Module class: X.Org Video Driver
[    29.651] (II) LoadModule: "nouveau"
[    29.701] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
[    29.745] (II) Module nouveau: vendor="X.Org Foundation"
[    29.745]    compiled for 1.18.1, module version = 1.0.12
[    29.745]    Module class: X.Org Video Driver
[    29.745]    ABI class: X.Org Video Driver, version 20.0

So there is a fundamental problem here - the Nvidia drivers are not
installed properly.  The Xorg driver file (nvidia_drv.so) is not
loading.  So the logs to be looking at are the ones of the install of
the Nvidia drivers.  Those are in /var/log/apt.  In there, the
history.log file is what apt has done at the package level.  The
term.log files are the output to the terminal of what happened as the
packages were installed (or removed).  So look in the term.log files
and find your last install of the Nvidia drivers and see if it shows
what went wrong.

I have never come across any problems like this since Nvidia drivers
were made available in packages in the Ubuntu distro.  You normally
either get an error message during the install of the packages, and
the install fails, or the install works and the drivers work.