Finishing December, I'm still suffering the same problem since that update. Maybe it has something to do with the new Xorg being run on userspace?
I add my information because it contains logs from bumblebee: $ sudo systemctl status bumblebeed ● bumblebeed.service - Bumblebee C Daemon Loaded: loaded (/lib/systemd/system/bumblebeed.service; enabled; vendor preset: enabled) Active: active (running) since mié 2015-12-30 09:30:34 CET; 20min ago Main PID: 875 (bumblebeed) CGroup: /system.slice/bumblebeed.service └─875 /usr/sbin/bumblebeed dic 30 09:30:34 arepa systemd[1]: Started Bumblebee C Daemon. dic 30 09:31:47 arepa bumblebeed[875]: [ 96.854001] [INFO]/usr/sbin/bumblebeed 3.2.1 started $ optirun -vv glxgears [ 1316.366496] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf [ 1316.367218] [DEBUG]optirun version 3.2.1 starting... [ 1316.367276] [DEBUG]Active configuration: [ 1316.367297] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf [ 1316.367316] [DEBUG] X display: :8 [ 1316.367335] [DEBUG] LD_LIBRARY_PATH: /usr/lib/x86_64-linux- gnu/nvidia:/usr/lib/i386-linux-gnu/nvidia:/usr/lib/nvidia [ 1316.367354] [DEBUG] Socket path: /var/run/bumblebee.socket [ 1316.367372] [DEBUG] Accel/display bridge: auto [ 1316.367390] [DEBUG] VGL Compression: proxy [ 1316.367408] [DEBUG] VGLrun extra options: [ 1316.367426] [DEBUG] Primus LD Path: /usr/lib/x86_64-linux- gnu/primus:/usr/lib/i386-linux- gnu/primus:/usr/lib/primus:/usr/lib32/primus [ 1316.367564] [DEBUG]Using auto-detected bridge primus [ 1316.374559] [INFO]Response: No - error: [XORG] (EE) [ 1316.374600] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) [ 1316.374620] [DEBUG]Socket closed. [ 1316.374649] [ERROR]Aborting because fallback start is disabled. [ 1316.374672] [DEBUG]Killing all remaining processes. $ sudo systemctl status bumblebeed ● bumblebeed.service - Bumblebee C Daemon Loaded: loaded (/lib/systemd/system/bumblebeed.service; enabled; vendor preset: enabled) Active: active (running) since mié 2015-12-30 09:30:34 CET; 22min ago Main PID: 875 (bumblebeed) CGroup: /system.slice/bumblebeed.service └─875 /usr/sbin/bumblebeed dic 30 09:52:07 arepa bumblebeed[875]: [ 1316.374416] [ERROR][XORG] (EE) dic 30 09:52:07 arepa bumblebeed[875]: [ 1316.374445] [ERROR][XORG] (EE) dic 30 09:52:07 arepa bumblebeed[875]: [ 1316.374452] [ERROR][XORG] (EE) dic 30 09:52:07 arepa bumblebeed[875]: [ 1316.374456] [ERROR][XORG] (EE) dic 30 09:52:07 arepa bumblebeed[875]: [ 1316.374461] [ERROR][XORG] (EE) dic 30 09:52:07 arepa bumblebeed[875]: [ 1316.374465] [ERROR]X did not start properly
