https://bugs.freedesktop.org/show_bug.cgi?id=62246
--- Comment #3 from Felix von Leitner felix-freedesktop@fefe.de --- The patch is on both kernels I tried, 3.9.0-rc1 and the git kernel.
I agree it sounds like vgaswitcheroo does not actually switch. Are there any knobs for vgaswitcheroo that I could try?
For switching, I write "ON\nDIS\nOFF" to /sys/kernel/debug/vgaswitcheroo/switch, using three separate writes.
That used to work fine.