16.10 not working with dual screen

[Ken D'Ambrosio]

Thirded. I can go to 16.04, and my HDMI screen stops working (I have
HDMI and display port on my Intel NUC); if I boot back to 14.x, it works
great. More interestingly: it appears to be kernel related, because if I
boot the 14.x kernel in 16.04, it's still happy. 16.10 seems to work
most of the time, though I still had issues a day or two ago. 

-Ken 

On 2016-10-28 14:53, Kevin O'Gorman wrote: 

> I've had lots of problems with multiple monitors starting about 16.04. I have three. I can boot into 14.04 where there is no problem, or 16.04 where it's hard to get any monitors to work after they shut off from inactivity. There are other problems as well. This doesn't seem exactly what you're seeing, but could be another symptom of a similar underyling thing. 
> 
> On Fri, Oct 28, 2016 at 7:30 AM, Liam Proven <lproven at gmail.com> wrote:
> 
>> Anyone noticed this?
>> 
>> I have a spare recovery install of 64-bit Ubuntu on my Mac mini's
>> external Firewire backup drive. (Normally the machine runs Mac OS X
>> 10.11.)
>> 
>> It was a copy of 16.04 -- I reinstalled over the top of a copy of the
>> OS from my old (BIOS-era) laptop, to "Macify" it and bring it back to
>> life.
>> 
>> Worked perfectly. Sound, wired and wireless networking, dual head (one
>> HDMI + one Displayport), everything. The dual head uses the on-chip
>> Intel HD 3000 GPU.
>> 
>> A few days ago I updated the laptop the image came from to 16.10. No
>> problems at all except with Nemo, so I removed Nemo.
>> 
>> So last night I updated the Mac to 16.10.
>> 
>> And now my Displayport monitor is dead. It's detected but there is no
>> image. Blank, dead.
>> 
>> Anyone else seen anything like that?
>> 
>> --
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>> 
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> 
> -- 
> 
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> 
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