Bugzilla – Bug 655160
Unable to access vgaswitcher_oo interface
Last modified: 2011-07-25 06:30:41 UTC
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; ru; rv:1.9.2.12) Gecko/20101026 SUSE/3.6.12-1.2 Firefox/3.6.12 As of kernel version 2.6.34, which is installed on my Asus laptop, kernel module vgaswitcher_oo (http://git.kernel.org/linus/6a9ee8af344e3bd7dbd61e67037096cdf7f83289) is included in kernel. As it is shown at the manual for one of Asus laptops (http://asusm51ta-with-linux.blogspot.com/) I should have directory /sys/kernel/debug/vgaswitcheroo, but there is no one. My laptop has really 2 video cards, that is shown bu lspci. I have tried some kernels: default, desktop and vanilla. No one helped. My debugfs is mounted. Reproducible: Always Steps to Reproduce: 1. Take dual-card laptop 2. Try to use 3d-acceleration. The default card used is integrated (haveing no 3d acceleration). 3. Make sure on absence of directory /sys/kernel/debug/vgaswitcheroo Actual Results: Directory is absent. Expected Results: Directory should be on its place. pavel-note:/var/log # uname -a Linux pavel-note.home 2.6.34.7-0.5-desktop #1 SMP PREEMPT 2010-10-25 08:40:12 +0200 x86_64 x86_64 x86_64 GNU/Linux
Can you attach the output of 'hwinfo' on the affected system?
Created attachment 401706 [details] hwinfo output This is hwinfo from ASUS UL80V
Don't forget to check "provides needinfo".
Egbert, could you take a look?
There is no module vgaswitcheroo (at least as far as I know). This API is compiled into the kernel. Since you have an Intel IGP and a NVIDIA discrete graphics chip you need to use the nouveau driver and kernel module and need to have to have KMS enabled. The latter is enabled by default for the Intel chip but should also be enabled for the nouveau driver (unless you have booted with 'nomodeset'). Could you please check if the nouveau driver is loaded: $ lsmod | grep nouveau Also please provide the output of $ cat /proc/fb
Closed due to lack of response.
Usage of NVidia card and proprietory drivers disabled vgaswitcher_oo. Noveau driver is useless for me, because lacking 3D hardware acceleration. I've found bumblebee project can help me a lot :)