gpu-manager overrides bumblebee Xorg.conf making X not starting

[Luca Osvaldo Mastromatteo]

I have an Acer Aspire E5-571G with an Intel iGPU and a NVIDIA 820m (Optimus hybrid system)

I'm using nvida-current drivers with bumblebee following the ubuntu wiki guide, rebooting, after executed just one time "primusrun glxgears" or another program with primus/optirun, when gpu-manager is triggered creates automatically an Xorg.conf probally overriding the correct bumblebee one located in /etc/bumblebee/
I had to rename in /usr/bin/gpu-manager to gpu-manager.old or disable via systemctl gpu-manager to fix this problem, with removing /etc/X11/xorg.conf and dpkg-reconfiguring the nvidia-bumblebee package to get lightdm enter into the user correctly and deleting the dconf folder in .config, unless, compiz crashes (strangely, it can't load openGL plugin)
I don't really know why.

Summarizing, the next time I reboot the pc or restart the display manager after executed primus/optirun successfully the first time, gpu-manager reconfigures everything. I can't even get to lightdm unless removing /etc/X11/xorg.conf, it can't join into the user (lightdm loop) unless i reconfigure nvidia-bumblebee package, and compiz crashes unless I delete the dconf configuration. I have also to delete gpu-manager from the init.

Tried with reinstalling ubuntu a few times.

When I install bumblebee and it's dependencies X should run correctly

Instead, X.org fallback is executed.

I'm using the latest Ubuntu, updated today.

[Luca Osvaldo Mastromatteo (lukycrociato)]

Updated description. I did a lot of tests.
Anyway, my pc configuration:

Acer ASPIRE e5-571G
Intel Core i5 4210u 1.7Ghz/2.7
Nvidia Geforce 820M

Kernel command line: quiet splash acpi_osi=
acpi_osi= for me is needed because the optimus card can't exit from D3 state after resuming from suspend.

[Luca Osvaldo Mastromatteo (lukycrociato)]

http://paste.ubuntu.com/14127403/

Log of gpu-manager

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alberto Milone (albertomilone)]

you can leave gpu-manager in place and simply boot with the "nogpumanager" boot parameter.

I am closing this bug report since we do not support bumblebee.