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

[Vincent Cheng]

On Wed, Nov 19, 2014 at 4:36 AM, Marek Rusinowski
<marekrusinowski at gmail.com> wrote:
> On Fri, 12 Sep 2014 13:13:43 +0200 Christian Lachner
> <christian.lachner at gmail.com> wrote:
>> Hello everybody,
>>
>> jkwong888 at https://github.com/Bumblebee-Project/Bumblebee/issues/580
>> came up with a fix that actually solves the problem - at least for me.
>>
>> Turns out that appending the following screen-section to
>> /etc/bumblebee/xorg.conf.nvidia makes bumblebee work:
>>
>> Section "Screen"
>>     Identifier "Default Screen"
>>     Device "DiscreteNvidia"
>> EndSection
>>
>> After a restart of bumblebeed, optirun works properly.
>>
>>
> Hello,
>
> I have debian jessie.
>
>   kernel 3.16.0-4-amd64
>   nvidia driver 340.46-3
>   bumblebee 3.2.1-7
>   xserver-xorg 1:7.7+7
>   xserver-common 2:1.16.1.901-1
>
> And unfortunately after appending those lines nothing changed. I have got
> same error and I'm unable to run programs using optirun.

Please attach a copy of:
- output of "dkms status" and your current kernel version (e.g. "uname -a")
- output of "optirun -vv glxgears -info"
- /var/log/Xorg.8.log and dmesg after a failed attempt at running optirun

Regards,
Vincent