Adam Dingle, thank you for reporting this and helping make Ubuntu
better.
Could you please boot into a working environment of Ubuntu (i.e. without
disabling the nvidia card), and run the following command once from a terminal
by ensuring you have the package xdiagnose installed, and that you click the
Yes button for attaching additional debugging information:
apport-collect -p xorg 1190806
** Package changed: xserver-xorg-video-intel (Ubuntu) => xorg (Ubuntu)
** Changed in: xorg (Ubuntu)
Importance: Undecided => Low
** Changed in: xorg (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1190806
Title:
X server fails to start on MacBookPro9,1 with hybrid Intel/Nvidia
graphics: no screens found
Status in xorg package in Ubuntu:
Incomplete
Bug description:
I have a MacBookPro9,1, which has both an integrated Intel HD Graphics
4000 controller and a discrete Nvidia GeForce GT 650M. I want to
disable the Nvidia graphics and boot using Intel only, since I don't
need the Nvidia chip's capabilities and it shortens battery life (and
makes suspend/resume not work; see bug #1084960). But when I
blacklist the Nouveau driver and reboot using the Intel driver only,
the X server fails to start: it reports "no screens found" and
crashes.
I'm booting using EFI rather than BIOS; not sure whether that's
relevant.
I'll attach the X server log and the dmesg log. Just let me know if
there's any other information I can provide.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1190806/+subscriptions
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