fresh install of f17 comes with 3.3.4, it has /sys/kernel/debug/vgaswitcheroo/
after 'yum update', kernel is updated to 3.5.3, but vgaswitcheroo is missing. Is this a bug? thank you.
How can I enable vgaswitcheroo in Fedora 18??? TO be honest with you all, this is the only thing that has kept me away from fedora and sticking with Ubuntu. I cannot find any tutorials or post that explains how to enable vgaswitcheroo in neither fedora 17 nor 18.
The file "/sys/kernel/debug/vgaswitcheroo/switch" is missing so I don;t know what else I have to do.
I've a dual vga laptop (intel + ati) and I've upgraded my distro from 19 to 20.
Everything is working pretty well, but now I can't disable the discrete card using vgaswitcheroo (like I used to do with fedora 19).
I'm using the latest kernel avaible (3.12.6-300.fc20.x86_64) and right now I'm using the intel vga, but I would disable the discrete card.
I have installed Arch Linux on a Dell Inspiron R15 with hybrid Intel/AMD graphics. vga_switcheroo is enabled and I can control radeon power with "echo ON/OFF > /sys/kernel/debug/vgaswitcheroo/switch".But when I try to switch to radeon in console with "echo DIS > /sys/kernel/debug/vgaswitcheroo/switch" the screen turns off.
I have a laptop with the problematic "hybrid" gpu of Intel/AMD, AMD 5450 to be more precise. Since version 11.10 (yes my laptop dates back to that..) the proprietary AMD drivers have not worked and I have relied on "vgaswitcheroo" to kill of the AMD gpu on boot.
previously I used this command:
su -c 'echo "OFF" > /sys/kernel/debug/vgaswitcheroo/switch'
to switch off my ATI Radeon card and use integrated Intel card. But with all newer kernel releases I can't do that.