Yesterday I installed nvidia driver 355.11 update from the "ubuntu fresh graphics"-PPA and the problem seems to be fixed. I can switch via "prime select" and login via light-dm works fine on nvidia. There's only one flaw beloging to screen postioning but this is a new issue and should not be mixed with this problem. For me this issue could be marked as fixed and closed.
Source for nvidia-355.11: https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa/+sourcepub/5646652/+listing-archive-extra -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1504220 Title: Black screen after "prime-select nvidia" and restart of lightdm/reboot Status in xorg package in Ubuntu: Incomplete Bug description: Being able to use prime-select to switch between graphics cards stopped working when I installed Ubuntu 15.04 with newer drivers. This worked in Trusty when I used: - nvidia-346 - nvidia-346-updates - nvidia-352 (ppa:graphics-drivers/ppa) ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-14.16-generic 4.2.2 Uname: Linux 4.2.0-14-generic x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 355.11 Wed Aug 26 16:35:41 PDT 2015 GCC version: gcc version 5.2.1 20151003 (Ubuntu 5.2.1-21ubuntu2) ApportVersion: 2.19-0ubuntu1 Architecture: amd64 Date: Thu Oct 8 18:18:55 2015 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu DkmsStatus: bbswitch, 0.7, 4.2.0-10-generic, x86_64: installed bbswitch, 0.7, 4.2.0-14-generic, x86_64: installed nvidia-355, 355.11, 4.2.0-14-generic, x86_64: installed GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21fc] NVIDIA Corporation GF108M [GeForce GT 620M] [10de:0de8] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21fc] InstallationDate: Installed on 2015-09-12 (26 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150911) MachineType: LENOVO 33643EG ProcEnviron: LC_CTYPE=de_DE.UTF-8 TERM=linux PATH=(custom, no user) LANG=de_DE.UTF-8 SHELL=/usr/bin/zsh ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-14-generic.efi.signed root=UUID=55cf0b06-9493-479a-a524-07e52d5be60a ro noprompt persistent quiet splash vt.handoff=7 SourcePackage: xorg UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/09/2015 dmi.bios.vendor: LENOVO dmi.bios.version: GAETA0WW (2.60 ) dmi.board.asset.tag: Not Available dmi.board.name: 33643EG dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGAETA0WW(2.60):bd04/09/2015:svnLENOVO:pn33643EG:pvrThinkPadS430:rvnLENOVO:rn33643EG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 33643EG dmi.product.version: ThinkPad S430 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+15.10.20151002-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.0-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.0-1ubuntu1 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu3 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Thu Oct 8 18:15:17 2015 xserver.configfile: /etc/X11/xorg.conf xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.17.2-1ubuntu9 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1504220/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
