I don't know if it's TSC calibration or some other change but my ThinkPad freezes at
[ 1.0085653] com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo [ 1.2707224] acpiacad0: AC adapter online. [ 29.4347917] pckbport: command timeout I normally see many lines between lines 1 and line 2 and I don't see the third line during a normal boot. -- Alex
