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<div class="moz-cite-prefix">On 10/18/2014 08:32 PM, Daryl McDonald
wrote:<br>
</div>
<blockquote
cite="mid:CAMwtTBAtq2=t=Vp04fwvP_y=K6TjSi-1zfriQwKe4PHAowNd+A@mail.gmail.com"
type="cite">
<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sat, Oct 18, 2014 at 10:21 PM, Jay
Foster <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:jayf0ster@roadrunner.com" target="_blank">jayf0ster@roadrunner.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">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 <a moz-do-not-send="true"
href="http://www.mythtv.org/wiki/Frame_display_timing"
target="_blank">http://www.mythtv.org/wiki/Frame_display_timing</a>,
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.<br>
<br>
The output of mythtvfrontend.real -v playback:<br>
2014-10-18 19:06:55.555103 I VDP: GetFilteredDeint() :
xv-blit -> 'linearblend'<br>
2014-10-18 19:06:55.555437 I FilterManager:
GetFilterInfo(convert) returning: 0x0<br>
2014-10-18 19:06:55.555446 I FilterManager:
GetFilterInfo(linearblend) returning: 0x3d7b320<br>
2014-10-18 19:06:55.555468 I VideoOutput: Using
deinterlace method linearblend<br>
2014-10-18 19:06:55.555482 E VSYNC: DRMVideoSync: VBlank
ioctl did not work, unimplemented in this driver?<br>
2014-10-18 19:06:55.555498 E VSYNC: RTCVideoSync: Could
not set RTC frequency:<br>
eno: Permission denied (13)<br>
2014-10-18 19:06:55.555687 I Player(0): Video timing
method: USleep with busy wait<br>
2014-10-18 19:06:55.555697 I Player(0): Display Refresh
Rate: 59.869 Video Frame Rate: 59.941<br>
2014-10-18 19:06:55.555703 I Player(0): SetFrameInterval
ps:1 scan:1<br>
2014-10-18 19:06:55.556536 I playCtx: StartPlaying():
took 0 ms to start player.<br>
<br>
<br>
ls -l /dev/rtc*<br>
lrwxrwxrwx 1 root root 4 Oct 18 19:05 /dev/rtc ->
rtc0<br>
crw-rw-rw- 1 root root 254, 0 Oct 18 19:05 /dev/rtc0<br>
<br>
cat /proc/sys/dev/hpet/max-user-freq<br>
1024<br>
<br>
Any ideas on what to try next?<br>
<br>
Jay<br>
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</a></blockquote>
<div><br>
</div>
<div>I have better luck with the 304 driver, and tearing
with the 331.</div>
</div>
<br>
</div>
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<br>
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</pre>
</blockquote>
The 304 driver does not support the GT730. I purchased an older
GT630 in case I need to go that route (downgrade to 304), but
haven't gone there yet. I don't see how using either the 304 or th
331 driver would affect MythTV's ability to use RTC sync. Even with
the permissions set to world read/write, MythTV still reports
permission denied.<br>
<br>
I see the line in the mythfrontend log, "Display Refresh Rate:
59.869 Video Frame Rate: 59.941". How could I ever expect smooth
output when the program frame rate and the display frame rate are
just out of sync?<br>
Jay<br>
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