Mountain Lion Problems

Wim · 11-12-2012, 02:38 PM

Hi All

We have been looking at the login issue to try and find the root cause of this. It appears that when the login issue occurs, it leads to the application crashing (finder, Adobe flash etc), so the 2 issues look related.

We have discovered it occurs when we install our kernel extension (kext), needed to add our virtual displays. To try and work out what was causing it, we tried a basic kext, using Apple example code. However the login issue can still be reproduced with this basic extension from Apple. It happens less often, but the bug is still there. We have also found it happens on other 3rd party devices. It seems there is a timing issue with adding a kext to Mountain Lion, which exposes this login issue/applications crashing.

I know you don't care whose issue this is and just want this fixed, but there is nothing further we can do to fix this issue. We are already beating on Apple's door about this bug (Bug ID# 12533718) but have not had any follow up from Apple about the cause or a fix. If there is anyone from Apple reading this - then please follow up on this issue and see how it is affecting your users with DisplayLink devices.

Hopefully together, we can pressure Apple into fixing this now we know it is an OS issue.

Thanks

Wim

11-12-2012, 02:38 PM	#19
Wim Senior Member Join Date: Feb 2009 Posts: 1,561	Hi All We have been looking at the login issue to try and find the root cause of this. It appears that when the login issue occurs, it leads to the application crashing (finder, Adobe flash etc), so the 2 issues look related. We have discovered it occurs when we install our kernel extension (kext), needed to add our virtual displays. To try and work out what was causing it, we tried a basic kext, using Apple example code. However the login issue can still be reproduced with this basic extension from Apple. It happens less often, but the bug is still there. We have also found it happens on other 3rd party devices. It seems there is a timing issue with adding a kext to Mountain Lion, which exposes this login issue/applications crashing. I know you don't care whose issue this is and just want this fixed, but there is nothing further we can do to fix this issue. We are already beating on Apple's door about this bug (Bug ID# 12533718) but have not had any follow up from Apple about the cause or a fix. If there is anyone from Apple reading this - then please follow up on this issue and see how it is affecting your users with DisplayLink devices. Hopefully together, we can pressure Apple into fixing this now we know it is an OS issue. Thanks Wim