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

[Vincent Cheng]

Hi Dirk,

Sorry for the late reply! Please do take care to cc the actual bug
report as well instead of directly replying only to me (there's a good
chance for stuff to just get lost in my inbox, unfortunately).

On Fri, Nov 21, 2014 at 2:14 PM, Dirk Linnerkamp
<dirk.linnerkamp at online.de> wrote:

> Dear Maintainer,
>
> since I've the same issue with the same Debian-Jessie System and bumblebee I
> feel free  to answer your message and provide the additional Information you
> asked for.
>
> My "bumblebee", "xserver-xorg" and "xserver-common" versions are the same as
> in Mareks post which I answer.
>
> I've attached a file with all information you requested.

Next time please either reply inline or put everything into a text
file, not an OpenOffice/LibreOffice Writer document.

According to your /var/log/Xorg.8.log logfile, it looks like the
problem is that for some reason the nvidia driver is unable to detect
your nvidia GPU, i.e.

[ 9176.525] (II) NVIDIA dlloader X Driver 340.46 Wed Sep 24 13:34:03 PDT 2014
[ 9176.525] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 9176.525] (­­) using VT number 7
[ 9176.525] (EE) No devices detected.
[ 9176.525] (EE)
Fatal server error:
[ 9176.525] (EE) no screens found(EE)
[ 9176.525] (EE)
Please consult the The X.Org Foundation support
for help.
at http://wiki.x.org

Is your nvidia GPU supported by nvidia-driver 340.46? See supported
products section at [1]. Otherwise, you may have to set the BusID
manually in /etc/bumblebee/xorg.conf.nvidia. Refer to the comments in
that file for a brief howto.

Regards,
Vincent

[1] http://www.nvidia.com/download/driverresults.aspx/78469/en-us