Bumblebee was doing this for me with the nvidia-367 driver installed.
Commenting out these lines in /etc/modprobe.d/nvidia-367_hybrid.conf
fixed it:
alias nouveau off
alias lbm-nouveau off
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This is not related to nvidia or bumblebee. I'm having same error when trying
to modprobe nouveau:
# sudo modprobe nouveau
modprobe: ERROR: ../libkmod/libkmod-module.c:816 kmod_module_insert_module()
could not find module by name='off'
modprobe: ERROR: could not insert 'off': Function not
Your nvidia package is too old, Ubuntu 15.04 already have version 346 in
repository and there is 349 in xorg-edgers ppa.
Try to install 346 first, with 349 my system works fine.
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I'm using Ubuntu 15.04 recently updated and I have the same problem yet.
I have the nvidia-304 package.
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https://bugs.launchpad.net/bugs/1438106
Title:
bumblebee fails on trying to
Just got systemd-related update of kmod, now everything works fine)
** Changed in: bumblebee (Ubuntu)
Status: Incomplete = Fix Released
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https://bugs.launchpad.net/bugs/1438106
Sorry, something I forgot yesterday
grep -r off /etc/mod* didn't show me something regarding nvidia or
bumblebee
but
grep -r nvidia /etc/mod* listed alot but nothing regarding 346, only the
other numbers and current
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Exact same problem for me.
15.04 beta 2, nvidia-346
timo@Timo-NB:~$ glxgears
Xlib: extension GLX missing on display :0.0.
Error: couldn't get an RGB, Double-buffered visual
timo@Timo-NB:~$ sudo optirun nvidia-settings
[ 1484.024073] [ERROR]Cannot access secondary GPU - error: Could
