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  • Integrated ads in phone apps - how to avoid wasting battery?

    - by Jarede
    Considering the PCWorld review that came out in March: Free Android Apps Packed with Ads are Major Battery Drains ...Researchers from Purdue University in collaboration with Microsoft claim that third-party advertising in free smartphone apps can be responsible for as much as 65 percent to 75 percent of an app's energy consumption... Is there a best practice for integrating advert support into mobile applications, so as to not drain user battery too much? ...When you fire up Angry Birds on your Android phone, the researchers found that the core gaming component only consumes about 18 percent of total app energy. The biggest battery suck comes from the software powering third-party ads and analytics accounting for 45 percent of total app energy, according to the study... Has anyone invoked better ways of keeping away from the "3G Tail", as the report puts it? Is it better/possible to download a large set of adverts that are cached for a few hours, and using them to populate your ad space, to avoid constant use of the Wi-Fi/3G radios? Are there any best practices for the inclusion of adverts in mobile apps?

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  • Windows 7 Aero Theme when on Battery

    - by Dan Revell
    Windows 7 has the full and basic aero themes that can be changed inside personalization. Windows used to automatically disable Windows Aero (transparency) when I unplug my laptop from the mains. I reset the theme and now it doesn't do this anymore. I can't seem to find how to enable this again. I've checked the advanced power options and control panel but turning back on this feature is eluding me. Any suggestions would be much appreciated.

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  • Compaq Presario CQ40 unexpected turn off

    - by CRoshanLG
    My Compaq Presario CQ40 (yeah, its pretty old) suddenly turns off after about 1/2 - 1 hour usage without any notice or warning. The power cable and adapter works fine (indicator bulbs show that power is given to the laptop), but it seems like machine suddenly plugged off from the power source. And when I try to switch it on, after the sudden turn off it simply won't turn on. I can only turn it on after letting it to rest for at least couple of hours! ** The battery has been dead for some time now, but it has been working fine on direct power supply until recently. Has anyone encountered this? and hopefully knows any cure?

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  • ARM laptop available?

    - by Ken
    Hearing all the fuss about some new consumer product that uses an ARM Cortex A8, I'm interested to get in on some of the action. But I want a real programmable computer running something like Linux. I've seen many, many reports in the past 2 or 3 years about prototype ARM laptops with great battery life. Unfortunately, when I tried googling today, all I can find are the old videos and press releases about the prototypes, not a shipping product. Is there an actual ARM laptop available today? Or did everybody give up and just use Intel Atom chips?

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  • Fedora 16 Running Hot

    - by sdasdadas
    Since switching from Windows 7 to Fedora 16, my laptop has been running incredibly hot (by the air exhaust). The laptop is an Asus K73S. Running 'sensors', I receive: acpitz-virtual-0: 75.0 celsius nouveau-pci-0100: 66.0 celsius asus-isa-0000: 75.0 celsius The only CPU hog is Firefox at 30 - 40% on average. My GPU information (from lspci) is: Intel Corporation Xeon E3-1200/2nd Generation Core Process or Family Integrated Graphics Controller (rev 09). Running lspci | grep -i VGA, returns: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: nVidia Corporation GF106 [GeForce GT 555M SDDR3] (rev a1) I don't notice a huge difference running without the battery, but it does seem a little cooler. Thanks!

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  • Is my laptop good enough to support my development needs? [closed]

    - by KodeSeeker
    I have an ASUS Pentium-R Dual Core CPU running at 2.20Ghz. It has 4 gb of built in ram, currently running a 64 bit Windows 7 . I just started graduate school and Im wondering whether I should go in for a new laptop or just repair the nagging battery on my current one. My requirements include - -Ability to support IDE's - I may end up running Eclipse, Visual Studio's and the like to help with my work. - Ability to run multiple VM's (not concurrently). Im currently running a Ubuntu 12 and 9 as VM's (not sure if this is overloading the system) - I'm a non gamer so I really dont care about a minor glitch caused by running a uber heavy game. -In addition I will have heavy use of Office Application Software and will be using my computer to watch movies and stream media. Looking forward to your replies and suggestions!

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  • ASUS N550 laptop not charging on ubuntu after updating kernel

    - by OBY Trance
    I'm using Ubuntu 13.10 on a pretty new ASUS N550jv laptop. When I was using kernel linux-image-3.11.0-11 everything was quite well (kinda..), however, when I updated the kernel using the automatic update, the kernels which were released afterwards (12+) were faulty on my machine, and caused the battery not to be charged and only stay at their current charging level (even when the machine was off!) The only fix I had was to roll-back to the '..11' version (on boot screen - advanced options), and hard-reboot (AC cord disconnected and reconnected) but now version 14 was released and "pushed away" the good old version 11. How can I fix that?? Please help me...

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  • Acer Aspire 7750-6801 windows 7 Home Premium x64 not charging properly [closed]

    - by MaurerPower
    I have an Acer Aspire 7750-6801 laptop running Windows 7 Home Premium 64 bit OS. The issue is that it will only charge sometimes when plugged in. I thought it might be a hardware issue, so I tried charging with the laptop off, and it works fine. Also when in Linux, or any other environment other than Windows, it also charges fine. The intermittent charging issue ONLY presents itself when in Windows. I've tried the following: Open Device Manager Under 'Batteries->', I uninstalled 'Microsoft ACPI-Compliant Control Method Battery' Then re-installed using 'Scan for hardware changes' Still no luck. It's quite urgent, any help would be appreciated as I am totally at a loss...

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  • How to check battery usage of an iPhone/Android app?

    - by Gajoo
    I think the title says Enough. For example Unity can generate you a report how much CPU/GPU power it's using or how fast it's going to drain device battery, but what about the applications developed using Cocos2d or the ones you develop directly using OpenGL? How should you profile them? In general what should you profile? or Should I simply run the application and wait for it's battery to run out?

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  • How can I get my battery level to display in the notification area (system tray)?

    - by Jon
    I'm trying to use the Awesome window manager with GNOME, i.e. running gnome-session --session=ubuntu on login, and it works great for the most part, except for the fact that the notification area/systray is missing a battery indicator. There's the Network Manager applet (nm-applet), a keyboard icon for switching keyboard layouts, but no battery icon as I would've hoped. I thought the command would be something like gnome-power-manager,

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  • AMD processors witn graphics card bundled [closed]

    - by shybovycha
    Sorry for posting this question here - just don't know to which StackExchange website i should be writing. I've heard AMD created processors with video card bundled. So now these processors should work as fast as just usual processors with discrete video card but AMD's ones should use less power and spread less warm. Some googling around gave me the result like "AMD processors of A-series". They were mentioned to be build using that technology i described above. But on the other hand, we have a small rate of publishing and not-very-good quality of AMD drivers. I am a game-developer and web-developer so i need a powerful processor and graphics card and a lot of RAM on board (to make it possible to create a sample Grails application, for example or to create some 3D models in Maya/Cinema4D, for instance). Still i want my battery to be a long-living one, so power usage is a bit critical for me. So, my questions are: are there any processor building technology like i've described and which series they are (if they exist)? which processor shall fit the laptop the best: AMD one or i5/i7 on with nVidia graphics card for the purposes mentioned above?

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  • Determine Android phone's proximity to known point while conserving power

    - by ahsteele
    I am trying to determine if an Android user has had a close proximity to a list of predetermined locations. I'd like to do this with the least amount of drain on the phone's battery. The two mechanisms I see for accomplishing this are proximity alerts and requesting location updates. What are the pros and cons of the two methods? Will one have less affect on the battery than the other? In either case I would guess the specific location manager used would affect power usage (existing Stack Overflow answer).

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  • Windows 7 boot problem on a Lenovo Thinkpad Z61m 9450HAG

    - by Matt Taylor
    I recently did a full upgrade of Windows 7 on my Thinkpad. Everything worked fine after up until the second reboot (the first reboot after some updates installed worked OK). At second reboot time the system would just black screen before the Windows logo appears. Disk/wireless/power/battery lights are all lit and the disk light is active (flickering). However, if I remove my battery and boot with just power it boots fine and quickly, and everything is OK. Any help on why this won't boot with battery plugged in is greatly appreciated. I need to take this battery out on the road/trains, etc. A little more detail on this story. The battery I had inserted when doing the (failed) boot was a long life battery. I have not tried inserting this battery when Windows is logged in. I have another (normal life) battery that I have charged up within Windows. It has just got to 100% and I am about to reboot with it in. I am using the Lenovo power manager to diagnose the battery - all seems OK. I will report back shortly as to the outcome. OK, so I chose the reboot option from within Windows, the machine seemed to shutdown okay, but then stalled. It didn't turn off completely and didn't reboot, but just sat, with the fan humming, somewhere in between! I had to hold the power button in for a few seconds until the fan stopped and then hit the power button again to boot the machine from fresh. One good thing, with this battery (the normal one) it booted into Windows 7 the first time with a battery! So, now I have rebooting issues. I have 3 errors in the event log: A timeout was reached (30000 milliseconds) while waiting for the lxdxCATSCustConnectService service to connect. The lxdxCATSCustConnectService service failed to start due to the following error: The service did not respond to the start or control request in a timely fashion. The following boot-start or system-start driver(s) failed to load: cdrom Any thoughts?

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  • UPS vs Solar Power in case of power failure for a server [on hold]

    - by Zen 8000k
    I am looking for a low power, low end pc able to run 24/7 without overheating and a way to support it in case of power failure. Power failures can be up to 72 hours. The pc dosen't need a monitor or keyboard. A modem must also be protected in case of power failure. When i say low end, i don't mean crap. The cpu needs to be x86 and have at least 1k cpu in this chart: http://www.cpubenchmark.net/index.php What's the best way to do this? EDIT: more info. I need to run a home server. The server will perform light tasks mainly. A x86 cpu sadly is the only route for my use. I want to be able to run the server and the router/modem in case of power failure. Now, regarding how long the power will fail: 1) 1 hours is OK for most situations. (say 90%) 2) 3 hours is OK (say 98%) 3) 6 hours is more thank OK. (say 99.5%) 4) On extreme cases the power might fail days. I believe this is very unlikely to happen. More is great but, really, how ofter power will fail more than 3 hours? I believe once every year at best. Well, that's too rare to care about. Given the above, I am looking for a cost effective way to archive 1-3 hour power or 6 hour if possible. Solutions: You guys give me great ideas. 1) Power generator: no good as power will fail for 10 seconds before returning. Also I read online, "clean" power generators cost 1.5k+, so it's out of budged. Non clean generator might damage electronics, right? 2) Solar power: i don't know for sure about this. Sounds like a great idea, too good to be true, honestly. For only 200$ i get 100+w? What are the drawbacks here? 3) UPS: This seems to be the best. The only problem is the cost. Cost < 200$ = great 400$ = budged limit

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  • wubi install of ubuntu 12.10 on hp dv6 6154tx causes uncontrolled heating, fan speed, low battery life

    - by kansi
    i have a hp dv6 6154tx with an integrated Intel GPU and a discrete ATI GPU (Radeon Mobility HD 6490M (1 GB DDR5)). -Problems: when i install ubuntu 12.10 using wubi, my laptop starts heating, fans start to run fast (to much of noise), and battery goes really low Any attempt to install catalyst drivers (from ati official site and also proprietary drivers) fails , as after reboot when i login everything is gone like no unity no desktop and sometimes black screen appears. even bumblebee and jupiter didnt help.... :( So PLEASE, PLEASE can somebody post the real solution to my problems i.e.(inc battery life and stop fan noise and heating). (i want to install ubuntu only using wubi)

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  • How to improve battery life on a HP Pavilion dv6?

    - by user1793249
    I apologise if this question is too similar to the numerous others already asked, but I'm a beginner and I really need your help. So...I've installed Ubuntu 12.10 a few days ago and I have only been able to get up to one hour of battery life. When running Windows 7 I get up to 3-4 hours. My screen is ultra bright, even tough the screen brightness is set to the minimum (I installed xcalib to dim my screen, but it doesn't improve the battery life) I read about Jupiter and installed it, but it doesn't have a noticeable effect. Thanks for your time.

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  • Android Static Variable Scope and Lifetime

    - by Edison
    I have an application that has a Service uses a ArrayList to store in the background for a very long time, the variable is initialized when the service started. The service is in the background and there will be frequent access to the variable (that's why i don't want to use file management or settings since it will be very expensive for a file I/O for the sake of battery life). The variable will likely to be ~1MB-2MB over its life tie. Is it safe to say that it will never be nulled by GC or the system or is there any way to prevent it? Thanks.

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