@zubozrout: I got the same error (Module 'nvidia' is not found) when I tried it just now. I had to alter the /etc/bumblebee/bumblebee.conf XorgModulePath in 18.10 to get optirun to work with the nvidia 415 driver:
XorgModulePath=/usr/lib/x86_64-linux-gnu/xorg,/usr/lib/xorg/modules,/usr/lib/xorg/modules/input X and restart bumblebee (sudo systemctrl restart bumblebeed). Note that the path used to start with /usr/lib/x86_64-linux- gnu/nvidia/xorg, but it looks like the module now goes just in /usr/lib/x86_64-linux-gnu/xorg: $ ls /usr/lib/x86_64-linux-gnu/xorg libglxserver_nvidia.so libglxserver_nvidia.so.415.25 nvidia_drv.so Not finding bbswitch shouldn't be such a big issue with newer kernals, because the kernel should be able to suspend the card automatically. You could try the latest bumblebee testing PPA (https://launchpad.net/~bumblebee/+archive/ubuntu/testing) and put this line into the [driver-nvidia] section of bumblebee.conf before restarting it: AlwaysUnloadKernelDriver=true For more details, see https://github.com/Bumblebee- Project/Bumblebee/issues/978 and specifically https://github.com /Bumblebee-Project/Bumblebee/issues/978#issuecomment-415332707. There's no cosmic driver in that PPA, but the bionic one works just fine on my cosmic. ** Bug watch added: github.com/Bumblebee-Project/Bumblebee/issues #978 https://github.com/Bumblebee-Project/Bumblebee/issues/978 -- You received this bug notification because you are a member of Bumblebee Project, which is subscribed to bumblebee in Ubuntu. Matching subscriptions: Bumblebee Team https://bugs.launchpad.net/bugs/1758243 Title: bumblebee needs configuration changes to work with nvidia-driver-390 and libglvnd0 Status in bumblebee package in Ubuntu: Confirmed Bug description: bumblebee fails to work in Ubuntu 18.04 with nvidia-driver-390 unless these configuration changes are made: 1. For optirun to work, /etc/bumblebee/bumblebee.conf needs two library paths changed (because of the changes for GLVND): [driver-nvidia] LibraryPath=/usr/lib/x86_64-linux-gnu:/usr/lib/i386-linux-gnu XorgModulePath=/usr/lib/x86_64-linux-gnu/nvidia/xorg,/usr/lib/xorg/modules,/usr/lib/xorg/modules/input With these changes, optirun works correctly on my laptop (using the primus bridge) but primusrun still fails. 2. For power management to work (ie turning the nvidia card off whilst not in use), the nouveau and nvidia modules need blacklisting so they don't load on boot, and nvidia_drm and nvidia_modeset need aliasing to off so they never load. Otherwise, nvidia_drm attaches to drm_kms_helper and then bumblebee can't unload the nvidia module and turn off the card. This configuration file in /etc/modprobe.d/nvidia- bl.conf works for me: blacklist nouveau blacklist nvidia blacklist nvidia_drm blacklist nvidia_modeset alias nouveau off alias nvidia_drm off alias nvidia_modeset off (The first two lines are already in bumblebee.conf. I found I also had to alias nouveau to off because gdm?/mutter? so desperately wants to load it.) Update: aliasing nouveau to off doesn't stop the nvidia-fallback service from loading the nouveau module, so if nouveau is still loading, you could try running this command: systemctl disable nvidia-fallback.service You'll need to reboot because nouveau is already loaded, but the change should be permanent unless something else re-enables the nvidia-fallback service. Finally, to run mesa applications, you need to set this variable: export __GLVND_DISALLOW_PATCHING=1 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: bumblebee 3.2.1-17 Uname: Linux 4.16.0-041600rc6-generic x86_64 ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Mar 23 12:18:02 2018 InstallationDate: Installed on 2017-08-16 (218 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) SourcePackage: bumblebee UpgradeStatus: Upgraded to bionic on 2017-11-17 (125 days ago) modified.conffile..etc.bumblebee.xorg.conf.nouveau: [modified] modified.conffile..etc.bumblebee.xorg.conf.nvidia: [modified] mtime.conffile..etc.bumblebee.bumblebee.conf: 2018-03-23T12:17:54.683287 mtime.conffile..etc.bumblebee.xorg.conf.nouveau: 2018-03-22T14:01:52.732698 mtime.conffile..etc.bumblebee.xorg.conf.nvidia: 2018-03-22T14:57:34.141995 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bumblebee/+bug/1758243/+subscriptions -- Mailing list: https://launchpad.net/~bumblebee Post to : bumblebee@lists.launchpad.net Unsubscribe : https://launchpad.net/~bumblebee More help : https://help.launchpad.net/ListHelp