I’ve got a problem with very slow Ubuntu 12.10 boot on my Asus laptop. It just hangs on for two minutes after grub . After these two minutes everything is working fine. This problem occurs since Ubuntu 10.10, 10.04 is working fine.

I can see these entries in dmesg:

[ 10.280717] [<c15d1c7e>] ? kernel_thread_helper+0x6/0x10
[ 10.280724] ---[ end trace b1793aea6dcc568d ]---
[ 149.816216] hpet1: lost 117715576 rtc interrupts
[ 149.816236] INFO: rcu_sched self-detected stall on CPU { 0} (t=37231 jiffies)
Can you tell me what is the source of this issue and how can I solve it?