Good find nenon1ks! So it seems that this is the commit that breaks it: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3a83f992490f8235661b768e53bd5f14915420ac
If this is the case, I can stop bisecting the kernel and move on to writing a patch to work around it. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-prime in Ubuntu. https://bugs.launchpad.net/bugs/1268771 Title: NVIDIA Prime fails with Linux 3.13 Status in “nvidia-prime” package in Ubuntu: In Progress Bug description: When I select the Nvidia® graphics card from control panel using nvidia-prime, after logging out, the screen goes black and the only way to approach it is in text mode. I also used the nvidia-prime 4.2 in Ubuntu 13.10 but I have never encountered such problems. ---------------------------- Specifications --------------------------- Operative System : Ubuntu 14.04LTS 64bit (Daily Build) Package: nvidia-prime 0.5.3 Driver: nvidia-331-updates Graphics: Nvidia® GeForce® 610M Processor: Intel® Core™ i7-2670QM ----------------------------------------------------------------------- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1268771/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp