NVGUI cannot be used and the following pop up message may be returned:
"Auditor failed to response to request".
Examination of the system resources show that
The Auditor is heavily solicited by a surge in notifications events. Each notification requiring an "nvsendopmsg" and "nvplgnotify" process to be spawned and run, the process manager runs out of available process slots to adopt these new processes.
The Auditor Daemon (nvavp) is responsible for tracking, controlling and validating user activities and requests. Depending on the user privileges, the Auditor grants or denies the requests. These events are logged in the .../db/audit.bin file also known as the Audit Trail. You can view these logs via NVBU Audit Trail report. By default they are deleted after 31 days.
You can change the size, content and age of this file by using the nvconfigurator > Auditing tab options. If a large amount of notifications are setup and the events to be notified on happen repeatedly in large occurrences, the process manager will reach a point where there are no more process slots available to adopt the wave of new processes.
To attempt to recover from this situation: