Bug 9014 - acpi-cpufreq uses too much power
Summary: acpi-cpufreq uses too much power
Status: REJECTED INSUFFICIENT_DATA
Alias: None
Product: Power Management
Classification: Unclassified
Component: cpufreq (show other bugs)
Hardware: All Linux
: P1 high
Assignee: cpufreq
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-09-13 04:05 UTC by Ritesh Raj Sarraf
Modified: 2007-09-13 12:56 UTC (History)
0 users

See Also:
Kernel Version: 2.6.22
Subsystem:
Regression: ---
Bisected commit-id:

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Description Ritesh Raj Sarraf 2007-09-13 04:05:06 UTC 
Most recent kernel where this bug did not occur:
N/A

Distribution:
Debian

Hardware Environment:
Dell XPS M1210
Processor: Intel Core Duo 2.0 Ghz
RAM: 2 GB
GPU: nVIDIA

Software Environment:
Linux 2.6.22 with DynTicks and HI-RES Timers

Problem Description:
Since the time I changed from speedstep-centrino to acpi-cpufreq after reading the deprecated warning, I get only 5 minutes of battery backup on my laptop.
This is ugly.
With speedstep-centrino, I get back to my 1-1.5hrs of battery backup.

Sep 13 15:07:11 learner kernel: speedstep-centrino with X86_SPEEDSTEP_CENTRINO_ACPI config is deprecated.
Sep 13 15:07:11 learner kernel:  Use X86_ACPI_CPUFREQ (acpi-cpufreq) instead.
Sep 13 15:07:11 learner powersaved: Starting powersaved with ACPI support


Steps to reproduce:
Use acpi-cpufreq instead on speedstep-centrino
Comment 1 Ritesh Raj Sarraf 2007-09-13 12:56:40 UTC 
Closing this bug as the issue is seen with speedstep-centrino also.
The battery power in anyway is < 10 minutes.
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