16.10 not working with dual screen

[Liam Proven]

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?

-- 
Liam Proven • Profile: http://lproven.livejournal.com/profile
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