https://bugzilla.kernel.org/show_bug.cgi?id=100001

Bug ID: 100001 Summary: Can't Change Resolution on MacBook w/ Hybrid Graphics and Nouveau Product: Drivers Version: 2.5 Kernel Version: 3.16 & 3.19 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: dmrickert@gmail.com Regression: No

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/14...