http://bugzilla.kernel.org/show_bug.cgi?id=11541
------- Comment #44 from v.ples...@gmail.com 2009-01-06 03:52 -------
I tested Ubuntu 9.04 Alpha 2 (kernel 2.6.28) on ASUS M51Ta laptop.
Despite it has kernel 2.6.28, which is supposed to support AMD Family 11h
procesors, boot procedure hangs.
I forced parameter "maxcpus=1" and was able to boot after it.
ACPI was working, but processor was at 100% of CPU frequency
(active state: T0)
Here are dteails what was available after boot with 1 CPU:
#ls /proc/acpi
ac_adapter
battery
button
dsdt
embedded_controller
event
fadt
fan
info
power_resource
processor
sleep
thermal_zone
video
wakeup
# cat /proc/acpi/processor/P001/info
processor id: 0
acpi id: 1
bus mastering control: yes
power management: no
throttling control: yes
limit interface: yes
# cat /proc/acpi/processor/P001/limit
active limit: P0:T0
user limit: P0:T0
thermal limit: P0:T0
# cat /proc/acpi/processor/P001/power
active state: C0
max_cstate: C8
bus master activity: 00000000
maximum allowed latency: 2000000000 usec
states:
C1: type[C1] promotion[--] demotion[--] latency[000]
usage[00000000] duration[00000000000000000000]
# cat /proc/acpi/processor/P001/throttling
state count: 8
active state: T0
state available: T0 to T7
states:
*T0: 100%
T1: 87%
T2: 75%
T3: 62%
T4: 50%
T5: 37%
T6: 25%
T7: 12%
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