I've established that this is being caused by OpenGL being enabled - I had enabled this in "G1 GL (Full KMS)" mode. When running in "G3 Legacy" I do not get these events in the syslog.
I've established that this is being caused by OpenGL being enabled - I had enabled this in "G1 GL (Full KMS)" mode. When running in "G3 Legacy" I do not get these events in the syslog.