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#1 2012-09-09 13:45:24

leonidas
Member
From: Greece
Registered: 2012-08-31
Posts: 33
Website

Problem using bbswitch and optirun

I follow the instructions of the wiki to install bumblebee with intel and nvidia optimus card.
When I run

cat /proc/acpi/bbswitch

I get the following error:

cat: /proc/acpi/bbswitch: No such file or directory

If I try to run

sudo modprobe bbswitch

I get:

ERROR: could not insert 'bbswitch': No such device

I have already installed bbswitch.
Finally If I run:

optirun glxgears

I get

[ 2585.015815] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) NVIDIA(0): Failed to initialize the NVIDIA GPU at PCI:1:0:0.  Please

[ 2585.015922] [ERROR]Aborting because fallback start is disabled.

I boot my system with parameter

pci=noacpi

and I suspect that parameter prevents to load nvidia drivers and bbswitch. Is that true?
I have Dell Inspiron N7110 laptop.

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#2 2012-09-20 22:58:46

dif
Member
From: Stalowa Wola, Poland
Registered: 2009-12-22
Posts: 117

Re: Problem using bbswitch and optirun

Hi. I had the same errors (except for glxgears, which I hadn't installed). I noticed the problems after ther recent update of kernel to linux 3.5.4-1. My bbswitch version is dkms-bbswitch-git.

I have just run

yaourt -S dkms-bbswitch-git

The command uninstalled bbswitch that was installed for kernel 3.5.3-1 (x86_64) and installed a new wersion for 3.5.4-1.
I haven't run any optirun <something> yet, but

sudo modprobe bbswitch

worked as well as

cat /proc/acpi/bbswitch

So hope this will help you.

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#3 2012-09-21 05:18:27

leonidas
Member
From: Greece
Registered: 2012-08-31
Posts: 33
Website

Re: Problem using bbswitch and optirun

I finally found the problem. I unplugged all USB devices and I boot without pci=noacpi. The bumblebee/bbswich works fine. After that I add acpi_backlight=vendor kernel parameter to grub to boot with plugged USB devices. Take a look here: https://bugzilla.redhat.com/show_bug.cgi?id=734041

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