Same problem on Lenovo Ideapad S12 on clean install of 10.10 Booting with acpi_skip_timer_override solved the problem.
In /etc/default/grub I added GRUB_CMDLINE_LINUX="acpi_skip_timer_override" -BIOS- Date : 05/13/2009 Vendor : LENOVO Version : 19CN16WW -Board- Name : MoutCook Vendor : LENOVO -Processors- Intel(R) Atom(TM) CPU N270 @ 1.60GHz : 800.00MHz Intel(R) Atom(TM) CPU N270 @ 1.60GHz : 800.00MHz -Version- Kernel : Linux 2.6.35-22-generic (i686) Compiled : #35-Ubuntu SMP Sat Oct 16 20:36:48 UTC 2010 C Library : GNU C Library version 2.12.1 (stable) Default C Compiler : GNU C Compiler version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) Distribution : Ubuntu 10.10 Desktop Environment : GNOME 2.32.0 -- System freezes during boot, unless I hold a key down https://bugs.launchpad.net/bugs/272247 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs