Well, Bios update did not improve the behaviour. But I finally upgrade kernels to 3.8 (after a complete backup) and no more freeze since this upgrade (http://askubuntu.com/questions/119080 /how-to-update-kernel-to-the-latest-mainline-version-without-any-distro- upgrade/142000#142000).
So for me case closed. ** Changed in: linux (Ubuntu) Status: Incomplete => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1273284 Title: [ASUS ZENBOOK Touch UX31A] Intermittent complete freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1273284/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs