Also affected by these issues

I upgraded from 15.10 (clean install) -> 16.04

Hardware:
Dell Latitude 7450 (Intel Core i7-5600U 2.6 GHz, 8 GB RAM, 256 GB SSD, 1080p 
screen, Intel Graphics)
Dell Dock: E-DOCK PORT REPLICATOR PR03X

Currently on Kernel: 4.4.6-040406-generic (was on 4.4.2 after upgrading
to 16.04, Kernel upgrade didn't fix anything)

Since the upgrade to 16.04:
*Laptop intermittently freezes and a hardware crash happens when using Dell 
dock (motherboard light flashing on capslocks key / screen goes blank) 
*Laptop now intermittently freezes on high CPU (I sometimes run a windows 8 VM 
in virtualbox. Now the laptop will freeze as above (blinking light) if i start 
the VM while the CPU is already under load with chrome/something
*2nd display in dual monitor extended config is flashing after standby - this 
wasnt happening in 15.10


please let me know if you need further info, 16.04 seems like a decent OS bar 
these issues.

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https://bugs.launchpad.net/bugs/1565924

Title:
  [Xenial] Freeze when docking Laptop

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