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

Fri Aug 24 05:31:48 UTC 2018

Yes, you need to disable nouveau so that the nvidia driver can load at boot
time.

On 24 August 2018 at 15:17, glen <glenb at glenb.us> wrote:

> On Thu, 2018-08-23 at 21:54 -0700, Allen Edwards wrote:
>
> I don't think the nvidia drivers are getting loaded and I can't figure out
> how to get them used.  I uninstalled them and installed them using the
> Other Drivers section and still I get this:
>
> *allen at MythNew:~$ lsmod | grep video*
> *video                  40960  1 nouveau*
> *allen at MythNew:~$ lsmod | grep nvidia*
> *allen at MythNew:~$*
> allen at MythNew:~$ lsmod | grep NVIDIA
> allen at MythNew:~$
>
>
> I know the board is recognized
>
> *allen at MythNew:~$ lspci | egrep -i nvidia*
> *01:00.0 VGA compatible controller: NVIDIA Corporation NV44 [GeForce 6200
> LE] (rev a1)*
>
> Google is good at showing me others who had this problem but not at a
> solution that I can use. Most suggest using commands that I don't have.
>
> Anyone?
>
> Allen
>
>
> On Thu, Aug 23, 2018 at 11:18 AM, Allen Edwards <allen.p.edwards at gmail.com
> > wrote:
>
> I made the change to xorg.conf and it made no difference.
>
> Also, what's with this?
> *sudo: nvidia-xconfig: command not found*
>
> Might be part of the problem.
>
> Again, everything is the same between the 8.04 disk and the 16.04 disk
> except the nvidia support software doesn't run and the driver is much newer
> (304 vs 180).
>
> When I run nvidia-settings from a terminal on the computer I get this:
>
> *$nvidia-settings*
> *ERROR: Unable to load info from any available system*
>
> Alen
>
> On Thu, Aug 23, 2018 at 9:45 AM, Peter Bennett <pb.mythtv at gmail.com>
> wrote:
>
>
>
> On 08/23/2018 12:33 PM, Allen Edwards wrote:
>
> Using the same settings on the new 16.04 install I have bad tearing when
> the boards pan on Jeopardy where I did not on 8.04.  As far as I can tell,
> everything is the same. I still have the 8.04 HD, which has serious issues
> but will play so I am able to compare the silky smooth performance of 0.21
> to the jerky performance of 0.28
>
> With Nvidia it helps to turn off composite to prevent tearing.
> sudo nvidia-xconfig --no-composite
> or else add this to your xorg.conf.
> Section "Extensions"
>     Option             "Composite" "Disable"
> EndSection
>
> Note that turning off composite prevents Ubuntu unity desktop from
> working. I use xubuntu to avoid that problem.
>
> Most things are the same as described below.  The differences are that I
> am aware of are that the new driver is 304 (which I confirmed is in use
> with additional-drivers) and the 8.04 system used 180.
>
> The other difference is that on the 16.04 system the nvidia-settings icon
> does not launch anything. It is just like clicking on air. I Googled this
> and found several people with the same problem and nobody with an answer.
> Maybe the problems are related
>
> The hardware is a M3A with AMI 5400, Geforce 6200 LE video card.
>
> I put the same xorg.conf file in /usr/share/X11/xorg.conf
>
> I created the same custom playback profile
> If rez > 0 0 -> ffmpeg & XVideo
> xv-blit softblend
> Bob(2x) Linear blend
>
>
>
> For general picture quality you would do better to use VDPAU slim playback
> profile if possible, or failing that, use OpenGL Slim.
>
> I have dual displays only one has myth.  Here is its xorg.conf section
> from the 2008 file I transferred over to the new disk.  I rebooted after
> loading the xorg.conf file
>
> Section "Screen"
>         Identifier      "Screen1"
>         Device          "Videocard1"
>         Monitor         "MythMonitor"
>         Option          "TwinView"      "0"
>         Option          "metamodes"     "DFP: 1280x720_60 +0+0"
>         Option          "AddARGBGLXVisuals"     "True"
>         # this next line will be ignored with the TV and the default, auto
> will be used
>         SubSection "Display"
>                 Depth   24
>         EndSubSection
>         Defaultdepth    24
> EndSection
>
>
> This list has been tremendously helpful on my other problems so I am
> hopeful I don't have to go back to 8.04 although at this point I can make a
> case for doing that.
>
> Allen
>
>
>
>
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>
> maybe disable nouveau in /etc/modprobe.d . i think if your nvidia was installed correctly you would have a
>
> conf in that directory that blacklists the nouveau driver. i would also check /lib/modules/ to see if there is even an
>
> nvidia.ko module there. my guess is that your nvidia package is not installing. try a sudo modprobe nvidia and see what the
>
> result is.
>
>
> i have not used ubuntu for a long time so someone else can probable help you with getting the ubuntu nvidia package
>
> installed. you may want to read the arch wiki on nvidia as it has a lot of good tips for running their driver.
>
>
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