Display was working for a while, but now no matter restarts, re plugging, etc., can't get it working. Below is from the log.
Code:
2015/10/30 09:42:05.787 DisplayLinkManager[102]: CGSConnectionByID: 0 is not a valid connection ID.
2015/10/30 09:42:05.788 DisplayLinkManager[102]: Invalid Connection ID 0
2015/10/30 09:42:06.490 com.apple.xpc.launchd[1]: (com.displaylink.useragent-prelogin) This service is defined to be constantly running and is inherently inefficient.
2015/10/30 09:42:06.490 com.apple.xpc.launchd[1]: (com.displaylink.useragent-prelogin) Please switch away from OnDemand to KeepAlive.
2015/10/30 09:42:22.955 com.apple.xpc.launchd[1]: (com.displaylink.useragent) This service is defined to be constantly running and is inherently inefficient.
2015/10/30 09:42:22.955 com.apple.xpc.launchd[1]: (com.displaylink.useragent) Please switch away from OnDemand to KeepAlive.
2015/10/30 09:43:21.674 DisplayLinkUserAgent[2383]: Set a breakpoint at CGSLogError to catch errors as they are logged.
2015/10/30 09:43:21.674 DisplayLinkUserAgent[2383]: CGSServiceForDisplayNumber: Invalid display 0x2b9831c4
2015/10/30 09:43:21.675 DisplayLinkUserAgent[2383]: CGSGetDisplayModeDescriptionsOfLength: Zero list count
2015/10/30 09:45:29.768 DisplayLinkUserAgent[2383]: CGSServiceForDisplayNumber: Invalid display 0x2b9831c4
2015/10/30 09:45:29.768 DisplayLinkUserAgent[2383]: CGSGetDisplayModeDescriptionsOfLength: Zero list count