I have had this issue since i first built this machine and installed 14.04 when 14.04 was current version. I can't remember what update this occurred after it was a long time ago. I thought this was a hardware issue originally. I am happy to try upstream kernel however i can't get ZFS to run and is required for my workflow. If someone can provide an upstream kernel with ZFS support I would be happy to install it and give it a try.
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