Openindiana svc:/application/graphical-login/gdm:default crashing

Over the last while I have noticed that graphical login on my OpenIndiana console is locking up on an unexpected basis. I have noticed that when the console does lock up I get the following entries in /var/adm/messages

Feb 25 19:59:09 ts nvidia: [ID 702911 kern.notice] NOTICE: NVRM: GPU at 0000:04:00: GPU-02222bc8-1372-d156-fb8d-4407aaab88d8
Feb 25 19:59:09 ts nvidia: [ID 702911 kern.notice] NVRM: Xid (0000:04:00): 32, Channel ID 00000001 intr 00040000
Feb 25 20:11:23 ts nvidia: [ID 702911 kern.notice] NVRM: Xid (0000:04:00): 32, Channel ID 00000003 intr 00040000

Since moving to the latest beta NVIDIA-Solaris-x86-334.16.run the frequency of this messages has reduced. In fact I had around three days without a console lock up. I have found that while the console is locked up it is still possible to SSH to the OpenIndiana machine. I have tried various approaches to attempt a restart the graphical console but the only method that works is a reboot.

I am currently running OpenIndiana Development oi_151.1.8 X86 and run the same applications on a consistant basis and not currently found any trends indicating a specific application as the cause.

I am happy to collect any data to help resolve this issue.