[mythtv-users] Upgraded to fixes/30, nvidia vdpau displaying at wrong refresh rates [ In reply to ]

[TimP]

It does seem to be the nvidia driver update causing this. There is a
ticket: https://code.mythtv.org/trac/ticket/13100 "Handle Non Integer
Refresh Rates with XRandr (Fixing JudderFree)" pointing to a git pull
request with patches that works for me:
https://github.com/MythTV/mythtv/pull/142 

The patched code changes from using nVidia's workaround for old RandR
that only supports integers to using the updated RandR with floating
point refresh rates. The ticket was closed two years ago as it had been
reported by Steven Ellis as breaking OpenGL playback. I don't know how
to test that as I only have nVidia cards for playback. 

I've had to massage the patches to apply to v30, I can post if required
or add them to the git puil request 44. I could probably also redo for
the master branch though testing that might be difficult. 

Cheers, 

Tim. 

On 2019-11-14 02:09, Mark Goldberg wrote:

> On Nov 10, 2019 you wrote: 
> 
>> It's stopped working for me too, but I haven't upgraded. I'm still using 
>> 29.1. My system is based on OpenSuSE Leap 15.1. I've updat other parts 
>> of the system fairly regularly. I don't know what's broken the fps 
>> setting, but it has nothing to do with v30 of MythTV in my case. I'm 
>> using nvidia drivers v390.129. 
>> 
>> I notice in mythfrontend's set up, I'm offered fps choices 50.000 Hz, 
>> 51.000 Hz, 52.000 Hz. I'm sure it used to offer me the actual frame 
>> rates not the codes. 
> 
> I reported this issue some time ago, related to later versions of the Nvidia drivers: 
> 
> https://lists.gt.net/mythtv/users/596579 
> 
> I have not resolved it, just using the workaround in that thread for playing everything at 60p. 
> 
> Mark 
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