This has been fixed and committed for a while in kernel.org according to the bugzilla and should be in 3.12. Maybe add the fix to 12.04 kernels too?
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1222838 Title: X fails to start with nvidia-prime on Acer Aspire V5-573G/V3-772G Status in The Linux Kernel: Unknown Status in “linux” package in Ubuntu: Confirmed Bug description: I get offered low-graphics mode but that doesn't start a session either. Let me know if you need info beyond what comes in these logs. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: nvidia-prime 0.4 ProcVersionSignature: Ubuntu 3.11.0-5.11-generic 3.11.0 Uname: Linux 3.11.0-5-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.1-0ubuntu3 Architecture: amd64 Date: Mon Sep 9 16:52:00 2013 MarkForUpload: True PackageArchitecture: all SourcePackage: nvidia-prime UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1222838/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
