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• Battery Power when running Ubuntu 14.04 LTS in dual boot

  - by Amro A.

  This is only a general question in order for me to get a better idea of my dual boot (windows 8 & Ubuntu) systems. I noticed that every time I run Ubuntu (which is becoming more often) the battery power gets consumed really fast. I am not performing any special tasks at the moment, just getting to know the system, for example, sound settings, watching videos, surfing the net and so on. When I do the same thing in Windows 8 the battery lives a considerable amount of time longer. Is this something to do with Ubuntu or is it because of the dual boot that I have going on? In other words, if I start running Ubuntu all by itself on my laptop, will it be more power consuming than Windows 8?

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• Is it safe to operate a laptop without battery?

  - by leladax

  I know it's 'unsafe' in terms of data loss but I noticed motherboards still have some of their circuits on power when they are plugged in [e.g. a circuit that must wait for power-on signals is certainly one of them]. Hence, I wondered if it would increase the life of the laptop if the battery was simply off. Let alone that may also increase battery life, but that's the least of my concerns. Notice the main point is to plug it off on hibernate and have no power source whatsoever for the duration of being off (apart from the clock battery). (i.e. saving having to plug off the battery every time)

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• My Laptop Battery Does Not Charge

  - by Oo Nwoye

  I am using a HP Pavilion and Ubuntu 11.10. I have been using Ubuntu for about a year. Recently (in Nov or there about), I noticed my battery never charges fully no matter how long it has been plugged in. I thought it was a problem with the power pack. However, after changing it, the problem is still persisting. I upgraded to 11.10 form 11.04 at about the same time so I do not know if this is a software or hardware issue. How do I solve this? This problem has been written about in various forms Laptop battery not charging after update?. Please help me or find someone that can.

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• Won't Hibernate when Battery Critical

  - by 12SJW34

  Ubuntu 12.04 64bit refuses to hibernate when battery is critically low. Instead it does a complete shutdown which is unnecessary and can cause loss of data. I have enabled Hibernate (pm-hibernate) on following the common instructions I tested pm-hibernate it is works fine when run manually. I have set my power options to hibernate "When Power is Critically Low". This has also been verified by using dconf Editor. Under org gnome settings-daemon plugins power critical-battery-action it is set to "hibernate". Under the same schema, time-action is set to "120". I would like to see what is happening just prior to this shutdown. I would like to know what logs to search to see if pm-hibernate is actually failing, or if it is being ignored entirely. Barring figuring this out on my own, is there a suggested work around?

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• Dell Inspiron 1501 battery no longer "recognized"

  - by mwalling

  My parents were on vacation last weekend and franticly called me saying that they couldn't get their Inspiron 1501 to boot anymore without the BIOS whining about the battery. Before this happened, they said the "battery went dead with negligible pre-warning". On bootup, the computer says: WARNING: The battery cannot be identified. This system will be unable to charge this battery. With options to enter the BIOS or continue booting. I got to look at the machine last night. The battery still holds a charge, and will recharge. Windows detects it as a DellPY9617 battery manufactured by "DynaPack". I didn't get the BIOS revision, but the machine's ship date was 7/21/2007. The recommendations I could find on the internet varied from "discharge the battery completely" to "your computer is too old" to "update the BIOS", and wanted a more specific answer before doing something drastic.

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• Dell Vostro 3500 battery life remaining missing from Windows 8?

  - by Misha

  On Windows 7 a Vostro 3500 laptop shows the battery life remaining, while on Windows 8 this information appears to be missing. The percentage is still available, but the life remaining is missing. How is battery life remaining calculated and does this require some level of driver support? Is it a standardized interface? Does anybody know which driver is responsible for handling this feature? I want to force the old Windows 7 driver, but I don't know which driver does battery remaining.

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• Wireless card on HP laptop not working

  - by D. Strout

  I just bought an HP Envy m6-1125dx online from Best Buy. When I got it home and started it up, the wireless card did not work well - at all. I could connect, but any real usage would cause the connection to start dropping every 30 seconds or so, and it would be really slow. Taking another look at the reviews on the Best Buy site, it seems only a few others had this problem, so I took it to my local Best Buy and exchanged it for another unit. Got it home again and the card had the same issues. Which leads to my dilemma. First: does this model have several different cards that it could come with? Mine is a Ralink RT5390R (on both units I received). If it does, then I can keep exchanging until I get a unit with a different card. I wouldn't ask this, except it seems weird that only a few people mentioned this issue, so I thought that might be one possibility. I looked in to replacing the card with a different one myself, but it seems that HP blocks certain wireless cards. However, some people reported success in replacing the card, and this site said it was only an issue on "older HP computer[s]". Can anyone confirm this? Finally, if that fails/will not work, does anyone know what I can get through Best Buy? I am concerned that they will not put any different card than the Ralink, and after two of those, I don't want that. Can I ask Best Buy support to use a different card? Can they even get another card from HP? I guess the base question is: should I attempt to replace the card myself (two days via Amazon to get a new card), should I try to get the laptop repaired through Best Buy (two - four weeks), should I go for a different model laptop from Best Buy, or should I try a different unit of the same model (three's the charm?).

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• Battery on or off while running the laptop on electricity?

  - by Ehsan Mamakani

  I have an HPcompaq nc6400 but I don't have much information about batteries.when I'm home I run it on electricity so at this time should I take the battery out or it's OK if I run it on electricity with battery on?

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• How to see the discharge rate of the battery

  - by Luis Alvarado - The Wolverine

  Maybe this question was made earlier but I can't find it. I want to see a terminal command or gui program that can show me the discharge rate of the battery. What hardware parts or programs are using more watts. EDIT: Found additional information regarding my question when using for example PowerTop: https://bbs.archlinux.org/viewtopic.php?id=128319 https://bugs.archlinux.org/task/26416 Both related to the having disable ACPI_PROCFS_POWER in the kernel.

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• Iverter, inverter cable, or a display cable?

  - by krebshack

  I was recently hired at a small repair shop. I work indoors while my boss does on site calls for small businesses. I have to troubleshoot and fix laptop screens a few times a week and this is why I'm posting this question. I'm having trouble figuring out how to stream line the troubleshooting process. For example, how do I determine whether the inverter is broken while also determining that the inverter cable is not. How can I quickly decide that the inverter cable is broken while knowing that the inverter is most likely not broke. Or how do I know that it's just the display cable? It seems like this is a good way to approach things: "It could be the inverter, backlight, or the LCD panel itself. Backlight failure is usually hinted at by a pink hue to everything. Inverter failure usually results in the dimming of images on the screen to the point where the backlight is not even on (the inverter provides power to the backlight)" Source. While remembering that things "like flickering, screen freeze in dark image and [a] corner starts to get brighter" point to a "failure in the LCD panel itself, though it could just as easily be a loose data cable connected to the back of the LCD." Source. In short, I'm soliciting advice that anyone might have on how to quickly make the best decision about what's causing problems with laptops display. Thank you.

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• Macbook shuts down when battery is empty (should have went to sleep)

  - by the_great_monkey

  In the past few weeks, my macbook shuts down when the battery dies. The battery does not even die at 0%, sometimes it shuts down at 5% or 10% remaining. I tried calibrating the baterry following this website: http://support.apple.com/kb/HT1490. But it does not really help. I regularly use battery in my macbook, I'd say I use around 2-3 cycles a week. My charge cycles is 440 cycles, and my current battery capacity is 3400mAh from the original 4100mAh. I have 2008 unibody Macbook. Does anyone know how to make it goes to sleep before the battery's dead? EDIT: The OS seems the think that the battery is ok...

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• Macbook pro asks me to "Service Battery"

  - by Uwe Honekamp

  A couple of weeks ago I checked the battery and at that point in time (after 160 load cycles) it still had a capacity of 5000 mAh. Today, my 2006 macbook pro tells me via the battery menu to "Service Battery". According to Coconut Battery the current capacity is only 1590 mAh. The corresponding help text suggests contacting an Apple Authorized Service Provider (AASP) to have the computer checked. Before I decide to throw money at the AASP I'd like to understand what the AASP could possibly do to eliminate the problem. Isn't it more likely that the battery simply broke at 160 cycles and needs to be replaced? Are there any means by software or firmware to influence battery behavior? Of course, the computer hardware might be broken but how could this result in the described effect? And yes, I'm currently trying a calibration cycle but I have some doubts that it will save the day.

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• How reliable is the battery data in ubuntu the power statistics?

  - by nbubis

  Right now the power statistics show that: Energy when full: 25.5 Wh Energy (design): 93.2 Wh And indeed the battery doesn't seem to be lasting as long as it used too. My question: Is this data reliable? Does it really indicate that I should replace the battery, or could it be the charger, laptop, or OS that is stopping the battery from fully charging? Is any way of validating the battery is indeed to blame? I'd like to be sure before shelling out 90$ for a new battery. (If it helps, the battery is a 3 year old dell 9 cell rated at 90 Wh).

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• Can I stop battery charging at say 80% and switch to AC?

  - by elim

  While I was looking for a battery management utility for my Dell E5420, I came to read this post - How can I limit battery charging to 80% capacity? . Sofar, I haven't found one that relates to my laptop. So, I wonder now if any battery manager utility can be found for my laptop specified above. I would be happy if someone could point me if such utility is available under Ubuntu 12.04 that can stop charging a battery at a certain percentage and to ONLY use A/C mode. Again, to start using battery mode when the A/C is off or when the battery level reaches at certain level. Thanks for all your help. Elim.

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• How do I find a bigger battery for my laptop?

  - by KeyStroke

  Hi, I have an ASUS K42JR laptop, and the battery life in this thing sucks (2 hours max). I'd like to get a bigger battery for it, and I've found a bunch online, but I have no idea which one fits/works with my laptop. Any idea how I can find that out? and which site do you recommend I buy it from? Your help is much appreciated

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• Turn off laptop display and have monitor

  - by Ryan B

  My laptop display has stopped working and is unfixable! Anyway, I got a full HD monitor and plugged that into the HDMI port of the laptop. I have changed the power settings so that I can close the lid and still have the monitor on, and this all works. However because it is on "mirror displays", I cannot get the full 1080p resolution that the monitor supports, and when I turn off mirror displays and switch off the laptop screen, the monitor will also switch off! I'm really stuck, as I can only get the monitor to display its full resolution if I have it with the laptop screen turned on, and I dont want this because (as the laptop display does not work) things get lost on that side of the screen. HELP. (Dell Studio 1537 Monitor is Samsung SA300 Connected through HDMI Ubuntu 11.10)

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• Battery Life in ubuntu 14.04

  - by user287466

  Today i had fresh installation of ubuntu 14.04 previously i had ubuntu 12.04 and had 5 to 6 hours of battery backup even at constant work, but in 14.04 getting 3 hrs only, tried with tlp but no use. lspci: 0:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4) 00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4) 00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04) 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05) 02:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)

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• Battery died when updating from 12.04 to 12.10

  - by Aksh BriZmohun

  I started the update and went to sleep but I forgot to plugin AC adapter. When i woke up, laptop was off. I plugged in the AC cord and turned it on. Ubuntu boots and it is on 12.10 but may items are missing and neither gnome nor unity seem to work properly. It's also very slow and freezes sometimes. Is there a way to correct all those issues ? or revert back to 12.04 then re update to 12.10 without losing my data ?

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• Windows battery meter utility suggestions

  - by Ashwin

  Can you suggest a good battery meter utility for Windows? Battery status being graphically displayed in the taskbar is the (obvious) minimum requirement. Anything else the utility can inform or do is a plus. (If the battery meter taskbar icon is turned off by an admin it does not appear for non-admin users. That could be another reason to look for a battery meter utility apart from the one which comes with Windows.)

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• is it good to use Laptop keyboard cover and body cover ?

  - by mgpyone

  Currently, I've used a laptop keyboard cover (for Mac), my brother told me that it's not good for your lappy,because of it keeps the laptop heat. is it ? also using the Laptop Plastic Cover. it has any effect on the laptop heat ? I like to get any suggestions, please.

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• APC UPS replace battery light and apcupsd reporting "replace battery"

  - by mgjk

  We have an APC Smart UPS 1500. The "Replace Battery" light is on, and apcupsd reports: Emergency! Batteries have failed on UPS xxxx. Change them NOW However, from this article, http://sturgeon.apcc.com/kbasewb2.nsf/for+external/f39c4312fcaf7b948525679a005ebb78?OpenDocument it seems that it's not so clear that the UPS battery needs to be replaced. Stranger, according to the information on the UPS, an 11 minute runtime at 42.9% load running at 27.7V isn't so bad. Any thoughts about what to try next? We're a non-profit, money is an object. It would be a shame to replace a battery with a year or so left in it. # apcaccess status APC : 001,041,1017 DATE : Thu Mar 29 13:01:41 EDT 2012 HOSTNAME : oreilly2 VERSION : 3.14.6 (16 May 2009) debian UPSNAME : xxxx CABLE : Custom Cable Smart MODEL : Smart-UPS 1500 UPSMODE : Stand Alone STARTTIME: Thu Mar 29 12:57:30 EDT 2012 STATUS : ONLINE LINEV : 112.3 Volts LOADPCT : 42.9 Percent Load Capacity BCHARGE : 100.0 Percent TIMELEFT : 11.0 Minutes MBATTCHG : 5 Percent MINTIMEL : 3 Minutes MAXTIME : 0 Seconds OUTPUTV : 112.3 Volts SENSE : High DWAKE : -01 Seconds DSHUTD : 090 Seconds LOTRANS : 106.0 Volts HITRANS : 127.0 Volts RETPCT : 000.0 Percent ITEMP : 23.8 C Internal ALARMDEL : Always BATTV : 27.7 Volts LINEFREQ : 60.0 Hz LASTXFER : No transfers since turnon NUMXFERS : 0 TONBATT : 0 seconds CUMONBATT: 0 seconds XOFFBATT : N/A SELFTEST : NO STATFLAG : 0x07000008 Status Flag SERIALNO : AS0603298896 BATTDATE : 2006-01-14 NOMOUTV : 120 Volts NOMBATTV : 24.0 Volts FIRMWARE : 601.3.D USB FW:1.5 APCMODEL : Smart-UPS 1500 END APC : Thu Mar 29 13:02:12 EDT 2012 Error when running upstest You are using a SMART cable type, so I'm entering SMART test mode mode.type = USB_UPS Setting up the port ... Hello, this is the apcupsd Cable Test program. This part of apctest is for testing Smart UPSes. Please select the function you want to perform. 1) Query the UPS for all known values 2) Perform a Battery Runtime Calibration 3) Abort Battery Calibration 4) Monitor Battery Calibration progress 5) Program EEPROM 6) Enter TTY mode communicating with UPS 7) Quit Select function number: 2 First ensure that we have a good link and that the UPS is functionning normally. Simulating UPSlinkCheck ... YWrote: Y Got: getline failed. Apparently the link is not up. Giving up.

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• How to make my screen brightness not change when I plug my laptop in

  - by user63985

  I do not want my laptop to change brightness when my laptop power is plugged in or unplugged. I set my brightness based on how bright my surroundings are. If I am in a dark room, I set my brightness very low and when I plug my laptop in the brightness gets set to maximum which feels like sticking my eyes in boiling lava. In System Settings ? Brightness and Lock the Dim screen to save power checkbox is unchecked. My laptop is an HP Mini 110 In case it is an acpi issue I have put my acpi-support file here http://paste.ubuntu.com/1008244/

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• what about laptop parts from Pcpartsltd.com?

  - by pcpartsltd

  i will buy some items form Pcpartsltd.com,what about it? i have seen some words:Pcpartsltd.com limited is a direct Exporter of high quality pc part notebooks, laptop power adapters, laptop batteries, laptop keyboards, laptop Inverters, laptop Hinges, laptop CPU Fan, laptop driver, laptop MotherBoards, Samsung Wall Mount, laptop LCD Bezel/ LCD lid, laptop lcd/led panel and Laptop LCD Video Cable. We are Laptop Parts experts.

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• My Laptop Beeps when I try to USB boot install

  - by Gino

  I tried to boot install Ubuntu using my laptop (without CD Drive) using a USB drive, then it goes to the boot selection menu (the one with the Ubuntu logo installation options). I selected Install then my laptop just beeps - 1 short beep, after that it stops then nothing installs, it just stays at the installation menu, can someone please help? Laptop Specs Neo Notebook (forgot the model version) 2GB RAM running Win XP SP3 150GB Hard Drive memory Would really appreciate if someone helped, I just used the normal 12.04 installer.

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• Suggestions to Purchase a System76 Ubuntu Pre-Installed Laptop

  - by user2956795

  I am looking to buy a new laptop that well supports Ubuntu, and recently came across the Ubuntu laptop manufactured by System76. I am not familiar with this brand although it seems to me they produce Ubuntu laptop with good performance. The price listed on their website is also not that expensive as compared with a MacBook Pro, or ThinkPad T series, or the Dell XPS Developer Edition Has anyone used System76 Ubuntu Laptop? I'd like to ask for your opinions. How is the experience. Is it worth to put the money on?

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