[mythtv-users] Re: Tearing in playback

[Tom Hughes]

In message <0E609E13-607F-11D9-99CC-000393CDF554 at cse.unsw.edu.au>
        William Uther <willu.mailingLists at cse.unsw.edu.au> wrote:

> On 06/01/2005, at 11:00 PM, mythtv-users-request at mythtv.org wrote:
>
>> If you start the frontend with "-v playback" then the log messages
>> should include something like this when you start watching something:
>
> Thank you very much for this.  I get:
>
> 2005-01-07 17:30:24 nVidiaVideoSync: Could not open device
> /dev/nvidia0, No such file or directory
> 2005-01-07 17:30:24 DRMVideoSync: Could not open device
> /dev/dri/card0, No such file or directory
> 2005-01-07 17:30:24 RTCVideoSync: Could not set RTC frequency,
> Permission denied.
> 2005-01-07 17:30:24 Using audio as timebase
> 2005-01-07 17:30:24 Video timing method: USleep with busy wait
>
> The first line makes sense - I don't have an NVIDIA card :).  I'm
> confused as to why RTC is giving permission denied - I'm running my
> front end as root.  I've got things to look at now - Thanks.

If you're root then that seems odd. The only things I would have
thought likely to do that are the permissions on /dev/rtc which
should be irrelevant as root can open any file. The other thing
would be the dev.rtc.max-user-freq kernel configuration value but
that only limits non-root users.

Maybe your kernel (or your hardware) has some hard limit on the
setting of the RTC frequency?

Tom

-- 
Tom Hughes (tom at compton.nu)
http://www.compton.nu/