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GSnake
Tux's lil' helper
Tux's lil' helper


Joined: 10 Sep 2012
Posts: 100
Location: Italy

PostPosted: Thu Sep 13, 2012 9:22 am    Post subject: Getting a better battery life Reply with quote

Hello guys, I've got a HP Probook 4530s and I'd like to achieve a better battery life.
What should I use to improve it? Which modules should I compile in the kernel?

Here the specs:

lspci:
Code:
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b4)
00:1c.7 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 8 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series]
24:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)
24:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)
24:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 30)
25:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
26:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
27:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)


Thanks!
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BrummBrumm
n00b
n00b


Joined: 04 Jan 2008
Posts: 58

PostPosted: Thu Sep 13, 2012 9:38 am    Post subject: Reply with quote

i would recommend you to check http://lesswatts.org/ and to play around with 'sys-power/powertop' and the tips it provides.
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GSnake
Tux's lil' helper
Tux's lil' helper


Joined: 10 Sep 2012
Posts: 100
Location: Italy

PostPosted: Thu Sep 13, 2012 9:48 am    Post subject: Reply with quote

BrummBrumm wrote:
i would recommend you to check http://lesswatts.org/ and to play around with 'sys-power/powertop' and the tips it provides.

I'm currently playing with PowerTop, cpufreq and laptop-mode.
I'll post the results :)

EDIT: I can't notice any difference by using these 3 tools combined... my battery life still sucks... running with lowest frequency with "ondemand" governor.
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BrummBrumm
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Joined: 04 Jan 2008
Posts: 58

PostPosted: Thu Sep 13, 2012 8:19 pm    Post subject: Reply with quote

if you have cpu-frequency-scaling enabled in your kernel-config and you are using the 'ondemand'-govenor you do not need tools like 'cpufreqd' as the kernel will take care of your frequency-scaling on demand :)

maybe you can tweak your video-drivers...

maybe your battery has just a small capacity? can you post the output of
Code:

cat /proc/acpi/battery/BAT0/*


if you have also windows installed on that notebook, can you provide some comparison?
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