Public bug reported:
I don't have the C3 state. My laptop is an HP nc6320 with T2300E cpu.
The same output comes on a sony vaio SZ2M/B (T2300)
cat /proc/acpi/processor/CPU0/power:
active state: C2
max_cstate: C8
bus master activity: 00000000
states:
C1: type[C1] promotion[C2] demotion[--] latency[000]
usage[00000010]
*C2: type[C2] promotion[--] demotion[C1] latency[001]
usage[01604681]
dmesg:
[17179569.184000] Initializing CPU#0
[17179573.468000] CPU: After generic identify, caps: bfe9fbff 00100000 00000000
00000000 0000c189 00000000 00000000
[17179573.468000] CPU: After vendor identify, caps: bfe9fbff 00100000 00000000
00000000 0000c189 00000000 00000000
[17179573.468000] CPU: L1 I cache: 32K, L1 D cache: 32K
[17179573.468000] CPU: L2 cache: 2048K
[17179573.468000] CPU: Hyper-Threading is disabled
[17179573.468000] CPU: After all inits, caps: bfe9fbff 00100000 00000000
00000040 0000c189 00000000 00000000
[..some for CPU#1..]
[17179576.080000] checking TSC synchronization across 2 CPUs: passed.
[17179576.084000] Brought up 2 CPUs
[17179579.076000] ACPI: CPU0 (power states: C1[C1] C2[C2])
[17179579.076000] ACPI: Processor [CPU0] (supports 8 throttling states)
[17179579.076000] ACPI: CPU1 (power states: C1[C1] C2[C2])
[17179579.076000] ACPI: Processor [CPU1] (supports 8 throttling states)
uname -a (latest updates already performed):
Linux franko-laptop 2.6.15-26-686 #1 SMP PREEMPT Thu Aug 3 03:13:28 UTC
2006 i686 GNU/Linux
I will promptly provide any info needed.
Thanks.
** Affects: Ubuntu
Importance: Untriaged
Status: Unconfirmed
--
Missing C3 state - Centrino duo
https://launchpad.net/bugs/55686
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