[mythtv-users] Video Tearing

[Jay Foster]

On 10/19/2014 11:05 AM, Peter Bennett (cats22) wrote:
> On 10/18/2014 11:32 PM, Daryl McDonald wrote:
>>
>>
>> On Sat, Oct 18, 2014 at 10:21 PM, Jay Foster <jayf0ster at roadrunner.com
>> <mailto: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.
>>
>>
>
> Did you disable composite?
>
> Run sudo nvidia-xconfig --no-composite
> OR, add this to /etc/X11/xorg.conf or a file in /etc/xorg.conf.d:
> Create file /usr/share/X11/xorg.conf.dG/55-mythtv.conf, or
> /etc/X11/xorg.conf
> Section "Extensions"
>      Option             "Composite" "Disable"
> EndSection
> NOTE This is incompatible with unity desktop in 13.04 and later
> You will have to install and use xfce desktop manager instead of unity
> Peter
>
>
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>
I have:
Section "Extensions"
     Option         "Composite" "Disable"
EndSection

in /etc/X11/xorg.conf.  No difference.
I cannot run nvidia-xconfig.  It crashes.  There is a bug entered for 
this on launchpad.

Jay