SliTaz Forum

MADMAN

Member

Registered: 2012-09-12

Posts: 41

How to disable secondary video card

I have an Asus laptop that using the sandy brige included an intel graphic card and a nvidia graphic, The question is how can disable my Nvidia card to get more battery life time.

thank you.

ernia

Member

Registered: 2011-05-20

Posts: 299

Re: How to disable secondary video card

look this

https://wiki.archlinux.org/index.php/Hybrid_graphics

so you should investigate kernel for vgaswitcheroo

remember that slitaz splits kernel in different linux* packages

kultex

Administrator

Registered: 2011-03-28

Posts: 1,175

Re: How to disable secondary video card

have a look in the bios, if you can disable the nvidia card

MADMAN

Member

Registered: 2012-09-12

Posts: 41

Re: How to disable secondary video card

is there any easier way to disable that there was alot of description and i'm confused.

i'm newbie and i dont know alots about linux.

@kultex

i looked into the bios and i didn't find anything usefull about video card the model is asus n53sv.

ernia

Member

Registered: 2011-05-20

Posts: 299

Re: How to disable secondary video card

i'm changing hd for a larger one so i found out a note about vga_switcheroo

at least in rolling you need to recompile kernel:

[c]root@slitaz:/home/tux# zcat /proc/config.gz | grep CONFIG_VGA_SWITCHEROO
CONFIG_VGA_SWITCHEROO=y
root@slitaz:/home/tux# zcat /proc/config.gz | grep CONFIG_DEBUG_FS
# CONFIG_DEBUG_FS is not set[/c]
changing CONFIG_DEBUG_FS to yes and rebulding - booting the new kernel you will be able to mount debugfs

manually: mount -t debugfs none /sys/kernel/debug

or editing /etc/fstab adding the row

debugfs /sys/kernel/debug debugfs 0 0

in the end you will have a switch in /sys/kernel/debug/vgaswitcheroo/switch

MADMAN

Member

Registered: 2012-09-12

Posts: 41

Re: How to disable secondary video card

sorry ernia i didn't get what i should do this is all i got and did with errors:

madman@MADMAN:~$ su

Password:

root@MADMAN:/home/madman# zcat /proc/config.gz | grep CONFIG_VGA_SWITCHEROO

# CONFIG_VGA_SWITCHEROO is not set

root@MADMAN:/home/madman# zcat /proc/config.gz | grep CONFIG_DEBUG_FS

# CONFIG_DEBUG_FS is not set

root@MADMAN:/home/madman# mount -t debugfs none /sys/kernel/debug

mount: mounting none on /sys/kernel/debug failed: No such file or directory

root@MADMAN:/home/madman#

thank you

ernia

Member

Registered: 2011-05-20

Posts: 299

Re: How to disable secondary video card

which slitaz are you using, 4.0?

are you able to rebuild your kernel?

http://doc.slitaz.org/en:guides:kernel

you can mount debugfs only after you have built your own kernel and booted it.

it seems that you must enable both configs.