[Bug 727236] New: ximagesrc fails to create an image after some time and recording stops

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=727236
  GStreamer | gst-plugins-good | 1.2.3

           Summary: ximagesrc fails to create an image after some time and
                    recording stops
    Classification: Platform
           Product: GStreamer
           Version: 1.2.3
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: bigwhale at lubica.net
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


This was first notice in Kazam Screencaster and now I was able to reproduce it
with gst-launch-1.0

ximagesrc will die with 

'error: could not create a 1920x1080 ximage'

This happens somewhat at different times while recording. Sometimes 5-8 minutes
into the recording and sometimes longer, 15-20. There is nothing out of the
ordinary to notice on the system, RAM usage is ok and everything looks normal.

Gst command line and pipeline that was used to gather the log data and to start
recording:

gst-launch-1.0 --gst-debug=ximagesrc:6 -e ximagesrc endx=1919 endy=1079
use-damage=false show-pointer=true !  queue !  videorate !
video/x-raw,framerate=24/1 !  videoconvert ! x264enc speed-preset=ultrafast
pass=4 quantizer=15 threads=4 !  queue name=before_mux !  mux. pulsesrc
device=alsa_output.pci-0000_00_1b.0.analog-stereo.monitor !  audio/x-raw  ! 
audioconvert  !  queue name=before_audio_conv !  audioconvert !  lamemp3enc  ! 
queue !  mux. mp4mux name=mux faststart=1 streamable=1
faststart-file="/home/bigwhale/Videos/test.faststart.tmp"  !  queue !  filesink
location="/home/bigwhale/Videos/test.mp4" 2> gst-launch.log

I've attached the the last second of log file.

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