Issues with Ubuntu 16.04.2 with kernel 4.8
I've just upgraded my Dell laptop to Ubuntu 16.04.2 with kernel 4.8. External monitor is totally unusable, everything slows down to the point that it freezes after a while. I attach 3 outputs of the Linux support tool. 01.zip contains the output with external monitor disabled, only built-in (everything is fine). 02.zip the output in the dual monitor configuration (freeze). 03.zip with the builtin monitor off, only external (freeze).
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