#12907: Shaking while picture panning on Raspberry Pi
---------------------------------------+--------------------------
Reporter: Josh Rosenberg <mythtv@…> | Owner: pbennett
Type: Bug Report - General | Status: new
Priority: minor | Milestone: unknown
Component: Ports - rPi | Version: 0.28.0
Severity: medium | Resolution:
Keywords: | Ticket locked: 0
---------------------------------------+--------------------------
Comment (by bhuffman@…):
I don't know what video card the AMD64 had, but I wonder if this might be
caused by the video sync timing source. Without either DRI or RTC, it
falls to "usleep with busy wait", which as I recall isn't very good and
can definitely result in tearing.
From "mythfrontend -v playback":
2017-04-05 22:27:38.108857 I VSYNC: DRMVideoSync: Could not open device
/dev/dri/card0, No such file or directory
2017-04-05 22:27:38.108922 E VSYNC: RTCVideoSync: Could not open
/dev/rtc:
eno: No such file or directory (2)
2017-04-05 22:27:38.110083 E X11 ModeLine query returned zeroes
2017-04-05 22:27:38.141215 I Player(1): Video timing method: USleep with
busy wait
--
Ticket URL: <https://code.mythtv.org/trac/ticket/12907#comment:3>
MythTV <http://www.mythtv.org>
MythTV Media Center