Battery life comparison of Ubuntu 12.04 and Lubuntu 12.04
location: ubuntuforums.com - date: March 20, 2012
I am a beginner with Linux. I have used Ubuntu 10.10 about a year ago for a while but only for the casual web surfing and mp3. I was impressed by the responsiveness of the OS then. I am interested in finding out the difference in battery life so far in the betas of Ubuntu 12.04 (specifically Gnome Classic without special effects) and Lubuntu 12.04.
My machine that I will be receiving soon is a used HP ProBook 5310m. It is of the Core 2 Duo generation (2.26 Ghz and 4 Gb DDR3 RAM) and has only a 4 cell battery on it. It already has Windows 7 installed on it but I wish to dual boot with Linux.
I narrow down the choices between Ubuntu 12.04 (specifically Gnome Classic w/o special effects) and Lubuntu 12.04 because I want to see if there is indeed a significant difference in battery life of the mainstream Ubuntu desktop and the lightweight derivative of Ubuntu. I have tried Lubuntu for a couple of months and while I am also impressed by the responsiveness of the Lubuntu system especially
LXer: How to undervolt the Android kernel for reduced heat and longer battery life
location: linuxquestions.com - date: September 19, 2014
Published at LXer:
You can extend Android's battery life and make the system more stable by undervolting a custom kernel
LXer: Five ways to prolong your Android device's battery life
location: linuxquestions.com - date: January 9, 2014
Published at LXer:
Here are five ways you can prolong your Android device's battery life.
LXer: 8 Apps to improve your Android smartphone or tablet's battery life (Slideshow)
location: linuxquestions.com - date: October 7, 2013
Published at LXer:
Summary: If you agree with me that little is as miserable as having your Android smartphone or tablet die of premature battery exhaustion, then you'll want to check these applications out.
Understanding the Android “Radio State Machine” for better battery life
location: linuxexchange.com - date: October 3, 2013
On the Android documentation page Optimizing Downloads for Efficient Network Access, the gist is that "waking up the radio is bad", "batch your transfers" or "piggyback on GCM". That article leaves some inner working principles for the curious:
It said "Every time you create a new network connection, the radio transitions to the full power state." What does connection mean here? Is that a TCP connection? Does that mean sending a UDP packet will not wake up the radio?
In Standby it said: "Standby: The minimal energy state during which no network connection is active or required." Does that mean the network module is completely shut off? If so how can GCM even work even when the device is in sleep mode? If not, roughly how much battery does it use compared to full power mode?
"Every time you create a new network connection, the radio transitions to the full power state." How does that gibe with long lived TCP connections? If I create a TCP connection and then just keep receiving packet
Battery Life Ubuntu Vs. Windows
location: ubuntuforums.com - date: January 3, 2009
I've always just accepted that my battery life is pretty crap on my laptop, but I booted windows the other (hasnt been done in about 3 months) and when I usually have about 35 minutes at 40% charge, I had an hour under windows. Does anybody know why this could be?
Google Chrome CR48 Ubuntu Battery Life
location: ubuntuforums.com - date: March 9, 2011
I am finding conflicting reports of Ubuntu's battery life feature on the CR48. Is anyone familiar with how much the battery can be maxed to on Ubuntu vs the Chrome OS 48?
12.04 has your battery life improved?
location: ubuntuforums.com - date: April 30, 2012
One thing I have seen touted in regards to 12.04 is improved power management.
Since Oneiric, I haven't seen any improvement at all and battery life is still much shorter than either Windows 7 or Kubuntu.
Thinkpad X220 short battery life with Ubuntu 12.04
location: ubuntuforums.com - date: May 12, 2012
Apparently Ubuntu 12.04 was meant to support the laptops better and allow a longer better life.
On Win7 I get 7 hours battery life with my 6 cell battery. Same laptop on Ubuntu is around 2 hours. Thats too much of a difference.
I have tried PowerTOP and switched some entries to GOOD in order to save battery life, but without a big success.
Any idea what to do?
HORRIBLE 11.10 battery life fix anytime soon?
location: ubuntuforums.com - date: November 3, 2011
I updated from 11.04 to 11.10 earlier this week, and though I'd heard reports of increased power usage on oneric, this is crazy.
I have a relatively new Lenovo x220 (core i7) with a 9-cell battery. With screen dimmed a bit and intermittent wifi use under Windows 7 I can easily get 8+ hours (and could push it to 12+ using Lenovo's power-usage tweaks). On Ubuntu 11.04 I still got a decently respectable 6+ hours. On Oneric, I'm getting around 4 hours with wifi turned off - that's a third of the battery life I can get on Windows. This is unacceptable.
What the heck is going on? I've heard this is somewhat kernel related, but even so, this seems insane to me. I've been on Ubuntu for six years and hate the prospect of having to turn back to Windows. I opted for this laptop specifically for the battery life, and the insane power consumption is making 11.10 practically useless for me. I'm tempted to revert all the way to 10.10 to see if I can at least get 7 hours with gnome2 and an
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