Bug#604953: Its a powernow_k8 problem

[Daniel Golesny]

While starting Gnome I've switched with CTRL+1 to the first text console
and got this tail of stacktrace instead of a reboot.

Call Trace:
    do_dbs_timer+0x204/0x26a
    worker_thread+0x188/0x21d
    do_dbs_timer+0x0/0x26a
    autoremove_wake_function+0x0/0x2e
    worker_thread+0x0/0x21d
    kthread+0x79(0x81
    child_rip+0xa/0x20
    kthread+0x0/0x81
    child_rip+0x0/0x20

Code: 89 fe 48 89 ef e8 f5 f6 ff ff 85 c0 0f 85 84 00 00 00 8b 55 2c 89
de 48 c7 c7 6b 4d 12 a0 39 d3 75 16 8b 55 a8 3b 54 24 18 74 14 <8b> 74
24 18 48 c7 c7 ab 4d 12 a0 b1 c0 e8 10 5c 1d e1 eb 57 48
RIP: powernowk8_target+0x542/0x6c1[powernow_k8]
RSP <ffff88007f107107cf0>
CR2: 0000000000000000
---[end trace 7ef0c6d62a521a57]---

After this stacktrace I disabled AMD Live! and Cool and Quiet in the
BIOS and now I can start my system normally ... at least one time.

Daniel