Endless log spam _CGXGLDisplayContextForDisplayDevice: No matching context for device

[MickM]

This is interesting. I just sent this email to the developer of CircusPonies Notebook. I'll post his reply if it's relevant.

G'Day Jayson,

So this probably has the makings of developers pointing fingers at each other...

I'm using a DisplayLink monitor (a dongle that has has a DVI output is connected to a USB port on my MacBook Pro and I effectively have another monitor). It obviously needs a driver, and that driver is having some teething problems.

If I put e.g. a Finder window in the DisplayLink monitor then nothing much happens. However, if I put a Notebook window in the DisplayLink monitor and bring that window to the front then I get this continuous steady stream of output appearing in the Console. This only happens if the Notebook window is in the DisplayLink monitor and it's the frontmost window - make any other window the frontmost window and the console output stops. It's almost like an active Notebook window is continuously broadcasting something that's upsetting DisplayLink and/or the WindowServer. A sample of the console output is shown below - any idea what might be causing this?

Regards,

Mick

2014.0515 3:57:09.138 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:09.704 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:10.264 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:10.821 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:11.381 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:11.948 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:12.497 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:13.064 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:13.620 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:14.181 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:14.737 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:15.303 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:15.864 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:16.421 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:16.981 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:17.548 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:17.787 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:18.065 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL
2014.0515 3:57:18.096 PM WindowServer[97]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fd694804690) - disabling OpenGL