Bug#756522: bumblebee-nvidia: cannot access secondary gpu - error: Permission denied

[Dirk Linnerkamp]

Package: bumblebee
Version: 3.2.1-7
Followup-For: Bug #756522

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?

     Run a command to launch an application with the optirun command, for
     example "optirun glxgear -info" After getting the above mentioned
     message I searched online for a solution of this bug. I tried to
     add to the /etc/bumblebee/xorg.conf.nouveau an additional "Screen"
     Section, as this solution worked for some people with Ubuntu
     systems. It didn't work for me. The lines I added to this file are:

                Section "Screen"
		  Identifier "Default Screen"
		  Device "DiscreteNvidia"
		EndSection  


   * What was the outcome of this action?

   The outcome was the same as before and the same as reported by other users detecting this
   bug: 

   [ERROR] Cannot access secondary GPU - error: [Xorg] (EE)
   /dev/dri/card0: failed to set DRM interfaces version 1.4: Permission
   denied
   [ERROR] Aborting because fallback start is disabvled.



   * What outcome did you expect instead?

   That the application starts using the DiscreteNvidia Card.




-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'testing-updates'), (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages bumblebee depends on:
ii  bbswitch-dkms        0.8-1
ii  dpkg                 1.17.21
ii  init-system-helpers  1.21
ii  libbsd0              0.7.0-2
ii  libc6                2.19-13
ii  libglib2.0-0         2.42.0-2
ii  libx11-6             2:1.6.2-3

Versions of packages bumblebee recommends:
ii  primus  0~20140711-1

Versions of packages bumblebee suggests:
pn  bumblebee-nvidia  <none>

-- Configuration Files:
/etc/bumblebee/xorg.conf.nouveau changed:
Section "ServerLayout"
    Identifier  "Layout0"
    Option      "AutoAddDevices" "false"
    Option      "AutoAddGPU" "false"
EndSection
Section "Device"
    Identifier  "DiscreteNvidia"
    Driver      "nouveau"
    BusID "PCI:0a:00.0"
EndSection
Section "Screen"
    Identifier "Default Screen"
    Device "DiscreteNvidia"
EndSection


-- no debconf information