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0e1f616
(Get the code!)
I've just rebooted with kernel 4.4.0-040400rc8 as well and also continue to see the 'interrupt lied' line. The situation has improved though.
Quick summary, just ask if you want more details/logs.
System information: HP EliteBook, Ubuntu 15.10, i7-5600U, Broadwell-U Integrated Graphics (rev 09)
Previously with the stock Ubuntu 15.10 kernel I was unable to attach a second display unless I connected the display before startup / early in the boot process and closed the laptop lid. Attaching a display over displaylink worked fine in that case. Attaching it over VGA limited me to 1024x768 resolution. Setting modelines for higher resolutions through xrandr resulted in an unusable desktop.
Currently with 4.4.0-040400rc8 I'm able to attach my VGA display after the desktop environment is running and use the second screen to extend the desktop. Setting a different modeline still results in an unusable desktop. I haven't had the opportunity to test a displaylink display since installing this kernel.
Thanks for progressing on this issue.