Endless log spam _CGXGLDisplayContextForDisplayDevice: No matching context for device

[BMT]

Originally Posted by jb8748

My view is that the DisplayLink installation should not edit the global asl.conf file in any way. I don't think it's the right approach for installers to alter system files when there are other alternatives.

While I would normally agree that it's bad to alter system files, the method you outlined in your blog post has never worked for me - editing asl.conf is the only method that has.

[luckman212]

I thought that it was "fixed" but I noticed today these logspam messages continue to appear for me even as of v2.4 (Jul 3 2015) so I had to re-enable this patch.

[dude123]

Sadly this has become a topic again under 10.12 Sierra. My syslogs get hit by 60.000 messages per second. And none of the above hints helps, also the asl-config coming with the displaylink 3.0 driver doesn't help. Anyone an idea about this?

[Carlo]

Originally Posted by dude123

Sadly this has become a topic again under 10.12 Sierra. My syslogs get hit by 60.000 messages per second. And none of the above hints helps, also the asl-config coming with the displaylink 3.0 driver doesn't help. Anyone an idea about this?

Can you please copy and paste the log message? It may be a new one.

Kind regards,
Carlo

[dude123]

Originally Posted by Carlo

Can you please copy and paste the log message? It may be a new one.

Yes sure!

 No matching context for device (0x7fe957c26f90) - disabling OpenGL

Sender:
/System/Library/PrivateFrameworks/SkyLight.framework/Resources/WindowServer
(/System/Library/PrivateFrameworks/SkyLight.framework/Versions/A/SkyLight)

Subsystem:
com.apple.SkyLight

[steve_s]

Originally Posted by dude123

Yes sure!

 No matching context for device (0x7fe957c26f90) - disabling OpenGL

Sender:
/System/Library/PrivateFrameworks/SkyLight.framework/Resources/WindowServer
(/System/Library/PrivateFrameworks/SkyLight.framework/Versions/A/SkyLight)

Subsystem:
com.apple.SkyLight

I am getting the same behavior, running Sierra, with a different 0x... number:

No matching context for device (0x7ff8ca335340) - disabling OpenGL

[silence]

Originally Posted by Carlo

Can you please copy and paste the log message? It may be a new one.

Kind regards,
Carlo

Can confirm this is an issue on Sierra 12.12.5. My log looks exactly like dude123's, and the existing fix no longer works.

[duncanm]

As a temporary fix you can enter the following in your terminal:

sudo log config --process=[PID] --mode "level:off"

where [PID] is the ID of the process you see in the console.

You have to re-do it every time you re-start your mac which is a pain, but at least it saves all those writes to your disk

[wa2flq]

That works, thanks.

[dude123]

Originally Posted by duncanm

As a temporary fix you can enter the following in your terminal:

sudo log config --process=[PID] --mode "level:off"

where [PID] is the ID of the process you see in the console.

You have to re-do it every time you re-start your mac which is a pain, but at least it saves all those writes to your disk

Yes, can confirm, this is the first "solution" that works on Sierra.
MacOS 10.12.6 - DisplayLink 3.1