Bug 100001

Summary:	Can't Change Resolution on MacBook w/ Hybrid Graphics and Nouveau
Product:	Drivers	Reporter:	dmrickert
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	NEW ---
Severity:	normal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	3.16 & 3.19	Subsystem:
Regression:	No	Bisected commit-id:

Description dmrickert 2015-06-16 17:17:08 UTC

When changing the resolution from the native display, the screen goes black and does not revert to the last setting.  At this point, a reboot is required to fix it.

I have tested on multiple Macbooks, if it does not have an NVIDIA graphics card than there is no problem.  I'm booting 14.04 off of a USB stick and using the Nouveau drivers.  I've seen this with both the 3.16 and 3.19 kernels.

Steps to Reproduce:
-On a MacBook Pro with hybrid graphics, boot into a fresh Ubuntu 14.04 installation with kernels 3.16 or 3.19.
-System Settings > Displays > Pick a new resolution

Also happens if you use xrandr from the command line.

Additional Information:
-My problem seems to be identical to this user https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1443989