How to use VGA_SWITCH

[Hellboy2D]

I tried to change my defaults cards because i had one display controller radeon 540rx and my VGA vegas 10 but my vegas 10 use my RAM and i dont need it but when i do the tutorial in amdgpu my vga_switch do nothing and i cant rewrite it because fsync had some error.

https://wiki.gentoo.org/wiki/AMDGPU

thats the tutorial i used.

[Hellboy2D]

I have two cards in my gentoo and i need to use only one but the commands in vga_switch won't work, and when i try to edit the file switch in vim the file had a fsync error and i cannot save. How can i disable my VGA card and use only my second card?

[fedeliallalinea]

Moved from Kernel & Hardware to Duplicate Threads.

See How can i use hybrid cards? problem with vgaswitch
_________________
Questions are guaranteed in life; Answers aren't.

[Zucca]

Did you meant to post on your earlier topic?
With your permission I can merge this topic into it.

EDIT: Nevermid. fedeliallalinea got here first. :P
_________________
..: Zucca :..