Actually, my problem is likely different than yours. Your issue is that the radeon card is still active, even if you are not using the driver.
I switch off the graphics card I'm not using with a startup script: # disable radeon card echo DIGD > /sys/kernel/debug/vgaswitcheroo/switch echo OFF > /sys/kernel/debug/vgaswitcheroo/switch # disable intel card echo DDIS > /sys/kernel/debug/vgaswitcheroo/switch echo OFF > /sys/kernel/debug/vgaswitcheroo/switch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/675156 Title: Fan allways working when using xserver-xorg-ati -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs