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GStreamer OpenGL plugin fails with XOpenDisplay in Freescale i.MX6 Ubuntu

Question asked by Song Yuan on May 20, 2013
Latest reply on Mar 3, 2014 by Yixing Kong

I'm trying to use GStreamer's OpenGL plugin (gst-plugins-gl) in Ubuntu in the latest release (L3.0.35_4.0.0_130424) with the following command:


gst-launch -v videotestsrc ! "video/x-raw-rgb" ! glupload ! glimagesink


Then it failed with segmentational fault at the following place:


#0  0x2b2d79d4 in XSynchronize () from /usr/lib/arm-linux-gnueabi/

#1  0x2b213bba in gst_gl_window_new (external_gl_context=0)

    at gstglwindow_x11ES2.c:343

#2  0x2b209602 in gst_gl_display_thread_create_context (display=0x15b008)

    at gstgldisplay.c:585

#3  0x2ac22b58 in ?? () from /lib/arm-linux-gnueabi/

#4  0x2ac22b58 in ?? () from /lib/arm-linux-gnueabi/


I checked that it's actually due to priv->device was NULL in gst-libs/gst/gl/gstglwindow_x11ES2.c:298

priv->device = XOpenDisplay (priv->display_name);


I tried X11 with both the accelerated vivante display or the original fbdev display, it's the same result. I would really appreciate if anyone has any ideas on why XOpenDisplay failed here.