(In reply to Stefan Dirsch from comment #12) > Ok. So the segfault is fixed with these patches. Remains that bumblebee > doesn't work. I suggest to add the patches to our Xserver and reassign this > ticket to the bugowners/maintainers of Bumblebee. Now i updated to the latest packages and are still using the X-Server provided by Michal Srb. No fundamental changes. However when the screen becomes black i can switch to a console (Ctrl+Alt+Fx) and do a login. So i gathered some information: systemctl status bumblebeed shows that bumblebeed is running and no errors are reported. journalctl -b 0 -p 3 shows 3 problems: Apr 12 16:18:31 linux-c9lf systemd-vconsole-setup[177]: /usr/bin/loadkeys failed with error code 1. Apr 12 16:18:31 linux-c9lf systemd-vconsole-setup[177]: KD_FONT_OP_GET failed while trying to get the font metadata: Input/output error Apr 12 16:18:31 linux-c9lf systemd-vconsole-setup[177]: Fonts will not be copied to remaining consoles Apr 12 16:18:32 linux-c9lf systemd[1]: Failed to start Setup Virtual Console. Apr 12 16:18:32 linux-c9lf systemd[1]: systemd-vconsole-setup.service: Failed with result 'exit-code'. Apr 12 16:18:33 linux-c9lf systemd-rfkill[957]: Failed to parse state file /var/lib/systemd/rfkill/pci-0000:6e:00.0:wlan: Invalid argument Apr 12 16:18:34 linux-c9lf systemd-rfkill[957]: Failed to parse state file /var/lib/systemd/rfkill/pci-0000:00:14.0-usb-0:8:1.0:bluetooth: Invalid argument For your information I will attache the output of "lsmod" as well.