[mythtv-users] Tearing with Nvidia Driver 455.45

[Stephen Worthington]

On Mon, 7 Dec 2020 14:32:27 -0800, you wrote:

>On 12/7/20 12:50 PM, Peter Bennett wrote:
>>
>> On 12/7/20 3:23 PM, Mark Goldberg wrote:
>>> Using mythtv-31.0-10.20201031giteb3c84de5f.fc32.x86_64 on Fedora 32
>>> and Nvidia Driver 455.45, I have noticed tearing in playback that was
>>> not present before.
>>>
>>> I am using nvdec as the decoder and opengl as the renderer.
>>>
>>> Has anyone else seen this?
>>>
>>> Regards,
>>>
>>> Mark
>>> _______________________________________________
>>
>>
>> Did you run the command to disable composite? It seems to still be 
>> necessary to prevent tearing...
>>
>> sudo nvidia-xconfig --no-composite
>>
>> Peter
>
>Ah, yes, I remember tearing.  It SUCKS!  I dealt with it for years with 
>my Nvidia cards.  I run KDE (Plasma, now days) and it has (had?) a 
>setting to disable compositing for full-screen apps (like Myth).  Seems 
>to me that fixed the problem, but I don't remember.  I also remember 
>finding a CLI command that disabled it and I added that to my startup 
>script for a while.  I switched to Intel onboard a couple of years ago 
>and I'll never go back.  I'm glad to be rid of the extra heat and bother 
>of the add-in Nvidia cards and the proprietary drivers and the extra 
>cost and the tearing....
>
>Dave D.

The fix for disabling composite is to add this section to
/etc/X11/xorg.conf:

Section "Extensions"
        Option "Composite"      "Disable"
EndSection

All that running the "sudo nvidia-xconfig --no-composite" command does
is to add that section.  Any MythTV user with an Nvidia card should
have added that a long time ago - the problem has been around since
VDPAU was invented.