I gathered the information from my ThinkPad Edge E520 11433NG. It has Core i5 integrated Intel graphics and a AMD Radeon HD 6630M. The Radeon part seems to be muxless and thus vgaswitcheroo to DDIS freezes the system (Debian testing with distribution kernel 3.1.0).
** Also affects: debian Importance: Undecided Status: New ** Attachment added: "11433NG.ThinkPadE520.tar.gz" https://bugs.launchpad.net/debian/+bug/752542/+attachment/2609608/+files/11433NG.ThinkPadE520.tar.gz ** Bug watch added: Debian Bug tracker #630345 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=630345 ** Changed in: debian Importance: Undecided => Unknown ** Changed in: debian Status: New => Unknown ** Changed in: debian Remote watch: None => Debian Bug tracker #630345 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/752542 Title: ACPI DSDT info To manage notifications about this bug go to: https://bugs.launchpad.net/lpbugreporter/+bug/752542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs