I've got one big problem that I simply can't solve. I got a HP Pavilion dv6 Laptop and it runs Linux Mint Debian Edition. This Laptop runs a hybrid graphics system and I want to switch off the discrete card as it is an AMD Radeon and it simply does not work very well with Linux - it overheats to about 90°Celcius but is not used at all by the OS.
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch with proper file permissions and I went trough a few tutorials witch told me the exact same thing. The only problem is that the turorials worked and by machine goes to some kind of shell prompt after I ran the command. It shows any kinds of system messages and stuff and fan speed increases but the whole desktop environment crashes and the system won't even allow me to switch to command line mode and log in. It shows system messages, freezes and tries to cool down (which I think means that the discrete card is switched off).
I would be very thankful for your help because I'm trying to fix this problem for a few weeks now. Thank's in advance.