For me it seems to be enough to disable hpet support in kernel (boot with hpet=disable). It does not only remove soft lockups, but in my case it's also a workaround for sata errors.
-- Computer hangs up (freeze) and reports SATA errors during disk checking after reboot https://bugs.launchpad.net/bugs/217920 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
