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How to disable secondary video card

(7 posts) (3 voices)

• Started 12 years ago by MADMAN
• Latest reply from ernia
• This topic is not a support question

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1. 

   MADMAN
   

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   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.

   Posted 12 years ago #
2. 

   ernia
   

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   Member

   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

   Posted 12 years ago #
3. 

   kultex
   

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   Key Master

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

   Posted 12 years ago #
4. 

   MADMAN
   

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   Member

   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.

   Posted 12 years ago #
5. 

   ernia
   

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   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:
   

   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

   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

   Posted 12 years ago #
6. 

   MADMAN
   

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   Member

   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

   Posted 12 years ago #
7. 

   ernia
   

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   Member

   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.

   Posted 12 years ago #

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