I'm having a similar issue, but not quite the same. The display works fine upon booting up (Kubuntu 15.10 beta 2), but if I let it go to sleep (or turn off the TV I use as a monitor) and return, then I get no display, and have to reset the computer to get a display back.
Just yesterday something changed (been installing upgrades like crazy, being a brand new PC on beta 2), and the display now works when I wake the computer, but I cannot get back into my established session (although I can start a new one). I'm using SDDM to login, KWin as my WM (with Plasma 5.4 as my DE); I'm honestly not sure what logs I could provide to aid this bug, but if somebody else knows I'll gladly spew any output from my system that can help! -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity-greeter in Ubuntu. https://bugs.launchpad.net/bugs/1501041 Title: No visible display in ubuntu session when using nvidia drivers via nvidia-prime until screen goes to sleep, then waked up Status in nvidia-graphics-drivers package in Ubuntu: Triaged Status in ubuntu-drivers-common package in Ubuntu: Confirmed Status in unity-greeter package in Ubuntu: Confirmed Status in xfce4-session package in Ubuntu: Confirmed Bug description: ** this appears to be that the display is blanked/asleep at greeter & login. Forcing or waiting for screen to blank/sleep then waking up restores display See comments 8 & 10 for further info, demonstrations ** Please note that this bug is being filed on a recent 15.10 Ubuntu image install but from a gnome session In a nutshell - Once nividia drivers are installed & used from nvidia-prime there is no longer a visible display in unity-greeter nor in an ubuntu session once logged in. (a blind log in successfully loads an ubuntu session. Everything in the ubuntu session works fine, there are no errors & all the related logs look ok, there is just no visible display. I can open apps, run commands, copy/create logs, play music, play videos, just no display so has to be done blindly from keyboard. On the other hand if I install gnome-shell & log in (blindly) to a gnome session from greeter then all is well & I get a visible display. The same behaviour is seen on an Xubuntu image install, once nvidia is installed & switched to, no visible display. Again there installing & logging into a gnome session works fine with visible display nvidia driver version doesn't matter, exact same is seen with current 15.10 versions & the one I'm currently using (355) from drivers ppa. ** this appears to be that the display is blanked/asleep at greeter & login. Forcing or waiting for screen to blank/sleep then waking up restores display See comment 8 for further info ** ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xserver-xorg-core 2:1.17.2-1ubuntu7 ProcVersionSignature: Ubuntu 4.2.0-11.13-generic 4.2.1 Uname: Linux 4.2.0-11-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.19-0ubuntu1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: GNOME Date: Tue Sep 29 16:15:21 2015 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu DkmsStatus: bbswitch, 0.7, 4.2.0-11-generic, x86_64: installed nvidia-355, 355.11, 4.2.0-11-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:3801] NVIDIA Corporation GK107M [GeForce GT 755M] [10de:0fcd] (rev ff) (prog-if ff) InstallationDate: Installed on 2015-09-28 (0 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150928) MachineType: LENOVO 20217 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-11-generic.efi.signed root=UUID=3712249e-a4c8-4b29-9ffb-f9f9e7d5259a ro quiet splash vt.handoff=7 SourcePackage: xorg-server UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/18/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 74CN44WW(V3.05) dmi.board.asset.tag: No Asset Tag dmi.board.name: VIQY0Y1 dmi.board.vendor: LENOVO dmi.board.version: 31900058STD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo IdeaPad Y510P dmi.modalias: dmi:bvnLENOVO:bvr74CN44WW(V3.05):bd09/18/2013:svnLENOVO:pn20217:pvrLenovoIdeaPadY510P:rvnLENOVO:rnVIQY0Y1:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoIdeaPadY510P: dmi.product.name: 20217 dmi.product.version: Lenovo IdeaPad Y510P dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+15.10.20150908-0ubuntu1 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.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu7 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+git20150808-0ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Tue Sep 29 16:05:24 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 729 vendor LGD xserver.version: 2:1.17.2-1ubuntu7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1501041/+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
