Hi, all. I have installed Debian Testing amd64 on my HP Envy 13, which has two GPUs - ATI Mobility HD 4330 and Intel GMA 4500MHD. Which means, I need some kind of switching through vga_switcheroo.
I've tried following this guide ( http://linuxenvy.blogspot.com/2011/01/tackling-switchable-graphics.html) for Ubuntu. I get this cat: /sys/kernel/debug/vgaswitcheroo/switch: No such file or directory cat: /sys/kernel/debug/vgaswitcheroo/switch: No such file or directory [: 96: unexpected operator [: 96: unexpected operator [: 96: unexpected operator [: 96: unexpected operator What do I do?