[mythtv-users] Video Tearing

[Daryl McDonald]

On Sat, Oct 18, 2014 at 10:21 PM, Jay Foster <jayf0ster at roadrunner.com>
wrote:

> I'm setting up a new mythbuntu 14.04.1 system with an nvidia GT730 video
> card (nvidia 331 driver).  I am trying to get rid of the tearing.  I have
> been following the suggestions at http://www.mythtv.org/wiki/
> Frame_display_timing, but I am not having any success.  I have added the
> udev rule to change permissions on /dev/rtc and verified that they are
> correct.  I have added an entry to /etc/sysctl.conf to set the
> max-user-freq and verified that it is correct.
>
> The output of mythtvfrontend.real -v playback:
> 2014-10-18 19:06:55.555103 I  VDP: GetFilteredDeint() : xv-blit ->
> 'linearblend'
> 2014-10-18 19:06:55.555437 I  FilterManager: GetFilterInfo(convert)
> returning: 0x0
> 2014-10-18 19:06:55.555446 I  FilterManager: GetFilterInfo(linearblend)
> returning: 0x3d7b320
> 2014-10-18 19:06:55.555468 I  VideoOutput: Using deinterlace method
> linearblend
> 2014-10-18 19:06:55.555482 E  VSYNC: DRMVideoSync: VBlank ioctl did not
> work, unimplemented in this driver?
> 2014-10-18 19:06:55.555498 E  VSYNC: RTCVideoSync: Could not set RTC
> frequency:
>            eno: Permission denied (13)
> 2014-10-18 19:06:55.555687 I  Player(0): Video timing method: USleep with
> busy wait
> 2014-10-18 19:06:55.555697 I  Player(0): Display Refresh Rate: 59.869
> Video Frame Rate: 59.941
> 2014-10-18 19:06:55.555703 I  Player(0): SetFrameInterval ps:1 scan:1
> 2014-10-18 19:06:55.556536 I  playCtx: StartPlaying(): took 0 ms to start
> player.
>
>
> ls -l /dev/rtc*
> lrwxrwxrwx 1 root root      4 Oct 18 19:05 /dev/rtc -> rtc0
> crw-rw-rw- 1 root root 254, 0 Oct 18 19:05 /dev/rtc0
>
> cat /proc/sys/dev/hpet/max-user-freq
> 1024
>
> Any ideas on what to try next?
>
> Jay
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I have better luck with the 304 driver, and tearing with the 331.
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