[mythtv-users] Tearing with Nvidia Driver 455.45

[Jim Abernathy]

On 12/7/20 9:56 PM, Stephen Worthington wrote:
> 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.


So Stephen, since I have not had Composite  Disable set in my xorg.conf 
and not seen tearing, is that because I'm using the OpenGL software 
Video Profile in Mythtv?

Jim A