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Old 12-18-2012, 01:57 PM   #1
fcovzqz
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Registered: Jun 2012
Posts: 4

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Power Management - ACPI support


Hello,

I have a DELL XPS 15z and installed Fedora 17 (Beefy Miracle)

Kernel version: 3.6.10-2.fc17.x86_64, running GNOME 3.4.2

Hardware-->

Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 1
On-line CPU(s) list: 0
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 42
Stepping: 7
CPU MHz: 2793.606
BogoMIPS: 5587.21
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 4096K
NUMA node0
CPU(s): 0


I been having trouble to find how to make power management work, since I installed I had to use option acpi=off on anaconda to avoid an error that was preventing me installing the distro.

the issue is that FAN runs really fast and the machine heats up quite a bit, and the battery discharges really quick! Since This is a laptop I cannot work because of the noise, without burning my lap, and by long hours without being connected to a power outlet!

It seems that the power management module is not loaded; I have tried loading it by using the command $modprobe -v acpi-cpufreq

Other indication that the Power Management is not running is that No Battery indicator on the task bask is shown


but it doesn't seem to work, any idea what should I try will be very much appreciated
Thanks!

Last edited by fcovzqz; 12-18-2012 at 02:09 PM.
 
Old 12-18-2012, 03:17 PM   #2
fcovzqz
LQ Newbie
 
Registered: Jun 2012
Posts: 4

Original Poster
Rep: Reputation: Disabled
More Info

Quote:
Originally Posted by fcovzqz View Post
Hello,

I have a DELL XPS 15z and installed Fedora 17 (Beefy Miracle)

Kernel version: 3.6.10-2.fc17.x86_64, running GNOME 3.4.2

Hardware-->

Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 1
On-line CPU(s) list: 0
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 42
Stepping: 7
CPU MHz: 2793.606
BogoMIPS: 5587.21
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 4096K
NUMA node0
CPU(s): 0


I been having trouble to find how to make power management work, since I installed I had to use option acpi=off on anaconda to avoid an error that was preventing me installing the distro.

the issue is that FAN runs really fast and the machine heats up quite a bit, and the battery discharges really quick! Since This is a laptop I cannot work because of the noise, without burning my lap, and by long hours without being connected to a power outlet!

It seems that the power management module is not loaded; I have tried loading it by using the command $modprobe -v acpi-cpufreq

Other indication that the Power Management is not running is that No Battery indicator on the task bask is shown


but it doesn't seem to work, any idea what should I try will be very much appreciated
Thanks!
Also found that acpi shows no support fot the power supply and thermal sensors:
[root@pc# acpi -s
No support for device type: power_supply
[root@pc]# acpi -t
No support for device type: thermal
 
Old 12-19-2012, 06:40 AM   #3
TobiSGD
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Registered: Dec 2009
Location: Hanover, Germany
Distribution: Gentoo
Posts: 15,357
Blog Entries: 2

Rep: Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979
It is simple as that: If you disable ACPI you are also disabling all power management functions. Do you really have to use ACPI=off? May be a less intrusive option would also work, back in the times I also used ACPI=off on my laptop, until I found that the nolapic option was sufficient. Have you tried other options?
 
1 members found this post helpful.
Old 12-19-2012, 03:41 PM   #4
fcovzqz
LQ Newbie
 
Registered: Jun 2012
Posts: 4

Original Poster
Rep: Reputation: Disabled
Thumbs up

Quote:
Originally Posted by TobiSGD View Post
It is simple as that: If you disable ACPI you are also disabling all power management functions. Do you really have to use ACPI=off? May be a less intrusive option would also work, back in the times I also used ACPI=off on my laptop, until I found that the nolapic option was sufficient. Have you tried other options?
Hello TobiSGD, thank you very much ... I have tried nolapic before but maybe I made a mistake ... I have retried and its working as it should ... I really appreciate the support and suggestion ... Now I am trying to upgrade to Fedora 18 but have not found a way to add nolapic option, do you happen to know how?

Regards,
Francisco

Last edited by fcovzqz; 12-19-2012 at 05:04 PM.
 
Old 12-19-2012, 05:19 PM   #5
TobiSGD
Moderator
 
Registered: Dec 2009
Location: Hanover, Germany
Distribution: Gentoo
Posts: 15,357
Blog Entries: 2

Rep: Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979Reputation: 3979
Sorry, not a Fedora user.
 
Old 12-20-2012, 08:28 AM   #6
fcovzqz
LQ Newbie
 
Registered: Jun 2012
Posts: 4

Original Poster
Rep: Reputation: Disabled
Cool

Quote:
Originally Posted by TobiSGD View Post
Sorry, not a Fedora user.
Thanks!
 
  


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