Actually, using nomodeset and the vesa driver as explained in https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/447892 works better, than the acpi=off. My sound now works and the power button doesn't switch it off immediately.
Actually, using nomodeset and the vesa driver as explained in /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- intel/+ bug/447892
https:/
works better, than the acpi=off. My sound now works and the power button doesn't switch it off immediately.