I've installed on my notebook with a primary Intel and a secondary Nvidia-GPU bumblebee and the nvidia-driver.

I've installed the proprietary bumblebee (bumblebee-nvidia and primus) as well as the nvidia driver (nvidia-driver).

Unfortunately, every time I try to use the optirun-command, I run into the following error:

[  940.032794] [ERROR]Cannot access secondary GPU - error:
               [XORG] (EE) Screen 1 deleted
               because of no matching config section.

[  940.032839] [ERROR]Aborting because fallback start is disabled.

Why is this appearing? I've not separated /etc/X11/xorg.conf-file where I've entered a screen 1 section or so.

OS and Kernel: Debian (4.6.0-1-amd64)

dmesg output after running optirun glxinfo:

[   60.060368] bbswitch: enabling discrete graphics
[   60.139924] nvidia: module license 'NVIDIA' taints kernel.
[   60.139930] Disabling lock debugging due to kernel taint
[   60.148818] [drm] Initialized nvidia-drm 0.0.0 20150116 for 0000:02:00.0 on minor 1
[   60.148822] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  352.79  Wed Jan 13 16:17:53 PST 2016
[   82.677037] systemd[1]: apt-daily.timer: Adding 6h 59min 17.494951s random time.

Additional my log-File-Dump from /var/log/Xorg.8.log: http://pastebin.com/raw/RbB5hg6h

  • Which distribution do you use? Can you post your dmesg after trying optirun?
    – maxf
    Aug 30, 2016 at 15:19
  • @maxf Sure. I've just added some additional infos. Aug 30, 2016 at 15:40
  • Okay. Looks good so far. Can you post the log of bumblebee's X server (i.e. /var/log/Xorg.8.log)?
    – maxf
    Aug 30, 2016 at 15:48
  • Okay, I've added a link to the log-file-dump. Aug 30, 2016 at 15:58
  • Did you modify /etc/bumblebee/xorg.conf.nvidia?
    – maxf
    Aug 30, 2016 at 16:31

1 Answer 1


I had the same problem of "Screen 1 deleted" on Debian testing with 4.9 kernel. I resolved adding the following lines to /etc/bumblebee/xorg.conf.nvidia as described here https://wiki.debian.org/Bumblebee:

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

Eventually try also to set the BusID manually in the same file, finding it with lspci | egrep 'VGA|3D'.

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