OSX10.9.2 + DL2.2 Beta + Belkin B2B044 == KABOOM

ChristianP · 05-05-2014, 04:21 PM

Ok, so it seems that DisplayLinkUserAgent is not crashing anymore.
Just to be sure, what kind of crash do you experience? Are you experiencing kernel panics? I mean, do you see gray screen and the machine need to be restarted? Thanks

RPD · 05-07-2014, 05:01 AM

During the course of the day while I'm actively using the system, the system does not have a kernal panic. When I'm away for an extended period of time I often see the displays going grey and restarting the system. Once I log back in I get a 'system had restarted due to an error' message and it is something that involves the DisplayLink.

If the log utility doesn't provide you with that log i can copy it so you can examine the stack trace.

RPD

RPD · 05-07-2014, 11:14 AM

Hi Christian,

It does appear to be a kernal panic. I've attached the report that's generated by the system.

Thanks,
RPD

Carlo · 05-10-2014, 08:09 AM

Hi RPD,

Useful kernel panic, something between our process and the USB framework. Or inside the framework itself. But no reproduction for us so far.

We have seen in our lab a system freeze that was as mysterious, simply having any event on the USB bus while in sleep caused it but only on one specific machine.
In that case it helped to resetting the NVRAM to default.

I would try to reset the the NVRAM, the instructions are in http://support.apple.com/kb/ht1379

Carlo

RPD · 05-10-2014, 12:15 PM

Quote:

Originally Posted by Carlo

Hi RPD,

Useful kernel panic, something between our process and the USB framework. Or inside the framework itself. But no reproduction for us so far.

We have seen in our lab a system freeze that was as mysterious, simply having any event on the USB bus while in sleep caused it but only on one specific machine.
In that case it helped to resetting the NVRAM to default.

I would try to reset the the NVRAM, the instructions are in http://support.apple.com/kb/ht1379

Carlo

Hi Carlo,

Thanks for the update. I'll reset the NVRAM and report back.

Cheers!
RPD

RPD · 05-12-2014, 04:52 PM

Hi Carlo,

Resetting the NVRAM has not corrected the issue. I had my system hang on me and required a hard reboot to reset it. The Apple report generated is attached. It seems like it's from the DisplayLinkManag; not sure if it's the same issue before.

Thanks,
RPD

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05-05-2014, 04:21 PM	#1
ChristianP Senior Member Join Date: Apr 2011 Posts: 280	Ok, so it seems that DisplayLinkUserAgent is not crashing anymore. Just to be sure, what kind of crash do you experience? Are you experiencing kernel panics? I mean, do you see gray screen and the machine need to be restarted? Thanks

05-07-2014, 05:01 AM	#2
RPD Junior Member Join Date: Mar 2014 Posts: 9	During the course of the day while I'm actively using the system, the system does not have a kernal panic. When I'm away for an extended period of time I often see the displays going grey and restarting the system. Once I log back in I get a 'system had restarted due to an error' message and it is something that involves the DisplayLink. If the log utility doesn't provide you with that log i can copy it so you can examine the stack trace. RPD

05-10-2014, 08:09 AM	#4
Carlo Mac Team Join Date: Feb 2009 Posts: 606	Hi RPD, Useful kernel panic, something between our process and the USB framework. Or inside the framework itself. But no reproduction for us so far. We have seen in our lab a system freeze that was as mysterious, simply having any event on the USB bus while in sleep caused it but only on one specific machine. In that case it helped to resetting the NVRAM to default. I would try to reset the the NVRAM, the instructions are in http://support.apple.com/kb/ht1379 Carlo