[mythtv-users] 0.24+fixes - tearing, /dev/rtc permissions and getting openGL to work

[Mike]

On 26 February 2011 13:12, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> On 02/26/2011 11:01 AM, Mike wrote:
>> On 26 February 2011 10:50, Brian J. Murrell wrote:
>>> On 11-02-26 10:47 AM, Mike wrote:
>>>> Thanks for everyones help and commentary on what my hardware can
>>>> achieve.
>>> I just wish I could get mine to stop tearing as easily as you did.
> ...
>> I've also tried to ensure I'm running 'good' NVIDIA drivers
>
> And, TTBOMK, that is basically the approach you need to take to prevent
> tearing.  AFAIU, tearing has nothing to do with /dev/rtc timing versus
> usleep timing.  The video drivers prevent tearing, so you need good
> drivers and need to configure them correctly for your chosen video
> output method.
>
> Mike
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I realised tearing is not related to the timing sources in my
situation with GPU/Composite issue... I had understood from a mythtv
wiki page that OpenGL (obselete) was better than RTC which was
possibly better than usleep... overall, I figured since RTC
configureable it may be useful or better than usleep for general
timing issues wrt audio & video and streaming from a separate backend
vs frontend.  All speculation though and was just pinning my hopes on
what I'd read and trying to figure out how to achieve RTC timing
instead of usleep.  Maybe usleep is less important in the newer
versions of hardware & software?