General :: Why Ubuntu Eats More Power Than Windows
Dec 2, 2009
I play full screen video with maximum volume or browse the Web with WiFi.
Under Windows 7 my laptop works ~5 hours. Under Kubuntu 10.10 only ~2 hours.
I've got Acer Aspire 1810TZ. Battery wear degree 90%.
Installed:
acpid
acpi-support
pm-utils
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Sep 29, 2010
I have thought about it many times but just never found enough guts to attempt using it before..but necessity is the mother of invention so here I am.
I have a Dell PC with windows Xp that failed to restart after a power outage it went into auto restart and caught itself in a loop of restarts and wont see the hard drive so therefore will not start up in windows at all I downloaded feather Linux onto a cd and it does start the PC In Linux but I cant seem to figure out how to find the hard drives in the pc to get the info off of it
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Jun 28, 2010
In my home directory, when I type
Code:
du -hs
I get
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215G
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which is approximately HALF the space than actually needed. Is this increase due to ecryptfs? Also I noticed that the hidden folders are not shown. Are the hidden files within the shown folders included in this list? How do I show a summary which includes the hidden files?
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Mar 11, 2011
No doubt Psychess is a very nice game for playing chess. I was playing this game often. But one thing I observed today is Psychess starts to eat 100% CPU right after the moment we start the game. I came to know about this after observing the "System Monitor" applet graph on the panel. This must not be normal because it's common sense when developer develops a software they always consider the CPU usage.. Even when I develop scripts I always give a sleep after heavy resource usage. For the record, I installed DreamChess and it works fine.
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Jan 27, 2010
I'm on 9.10 and I use huludesktop often to watch my Hulu queue. Every once in a while (and more so lately) the video freeze and the sound stutters. I then find that pulseaudio is taking 100% of a CPU (I have a quad core AMD 64bit machine). Killing pulseaudio causes huludesktop to continue without sound and a new pulseaudio starts up. I have to kill huludesktop and resume playback and then everything's OK, until it happens again.
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May 3, 2010
Hey when i am downloading any thing using firefox or torrent, the downloading application eats up all the bandwidth, meaning i cannot browse the web simultaneously downloading anything , even Gwibber does not get updated...
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Apr 9, 2011
If I use K9Copy to compress a 6.4 gb DVD to a 4.4gb ISO files, it heats up the CPU and the machine shuts off. When I do this with system monitor ON, I see 160% to 180% CPU usage. I guess this is due to dual core on my Gateway laptop.Then I installed DVD Shrink and tried the same by running DVD Shrink using Wine. This caused the same problem.I did not have this issue when I was using Windows Vista. Is there anything that I can do to avoid this problem?
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Oct 23, 2010
I have a powerful server with 24GB of ram and an Intel Xenon quad core processor that I'm using to run a bunch of virtual machines for an office on using VirtualBox. Lately there has been a problem though. If I run free this is what I get:
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I have sysstat install so I ran sar -r on the command line and I found:
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a little before 2:45 PM I had my RAM eaten. Going back through my brain I remember that at that time I ran the command VBoxManage clonehd XXXXX.vdi to clone one of my virtual hard drives. I tried this again to make sure that the VBoxManage clonehd command was really the thing that was eating my RAM and it was. My question is - how do I reclaim the RAM. When the process that ate all the ram finished (I think it's the VBoxSVC process) it just leaves me with all my RAM used. How do I free up the RAM without restarting the server?
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Feb 26, 2011
I've install FC14 on my iMac 27" i7 and I'm having exactly the same issue I had with Ubuntu 10.10: acpid eats 90% of one Core all the time.With Ubuntu this issue was solved by updating but with FC14 no way, I can't find any solution.Right now I've turned off acpi and apm at boot time but this only let me use one of my four Cores.
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Feb 7, 2010
Maybe it's specific feature, but it does not seem right that within ~30 m to 1h 3gb of disk space on /home are gone due to I can't tell what exactly. Usually it happens while listening to music via vlc or browsing www (chrome and firefox). I got 3gigs of ram (95% in use under such conditions), and 1,5gb of swap that is not used at all by the system.Its a KDE.
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Jul 27, 2010
I just got a USB bluetooth adapter for my Laptop. I'm running Lenny with all the lateset updates, on and Ispiron 8600. I went through and made sure I installed all the Bluez stuff (as far as I can tell anyway). I'm trying to use it with my Droid Eris and while I have been able to successfully recieve files from the phone in Linux, I noticed it seems a little buggy and I think it ma have something to do with the logs. Below is a sample. As you can see, one line keeps repeating continuously. Given enough time, it will fill the entire /var partition. When I remove the Blutooth, it stops.
Code:
hal9000:/var/log# tail -F syslog
Jul 27 03:59:00 hal9000 hcid[32187]: Stopping security manager 0
Jul 27 03:59:00 hal9000 hcid[32187]: Device hci0 has been disabled
Jul 27 03:59:00 hal9000 NetworkManager: <debug> [1280217540.460076] nm_hal_device_removed(): Device removed (hal udi is '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci_158315a310').
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Mar 26, 2010
My ubuntu 32-bit 9.10 compiles kernel a few times, and now I realized my Win7 lines disappeared. First time when I made the dual boot system, I remember there is a line for Win7, and able to boot up Win7. And then I ran compilations 2 ~ 3 times, and now I see the lines gone. I know 'editing GRUB' is risky, and want to hear advice how to fix. - Actually I don't think I can edit grub.cfg file manually. In my Ubuntu Desktop menu, I still see and mount the Windows disk (physically different partition)
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Apr 18, 2010
I'm running a pretty heavy-weight process (Rails tests) that involves several worker processes, in an effort to parallelize the runs. To measure the performance impacts, I run hdparm -T /dev/sda to give me the cached read performance. Note that the disk IO is not being measured, but the disk cache IO is. It works very well on my work machine (8-core Mac Pro running Ubuntu with 8GB of RAM).
The baseline is:
honk4:~ $ sudo hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 13224 MB in 2.00 seconds = 6616.86 MB/sec
In the middle of the test run:
honk4:~ $ sudo hdparm -T /dev/sda
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Apr 23, 2010
/sbin/udevd --daemon eats about 10-15% of cpu which is quite high. I found out that it is caused by AHCI. If I turn it off in bios, udev takes only about 0-1% of cpu (which I consider normal). However turning AHCI off is deadly for Windows Vista (I have dual boot) - it always ends up with BSOD. Actually, I don't even know what AHCI does. Of course I found some information on the net but I didn't found whether there are some advantages for me. Is it worth 10-15% of cpu (consequently shorter battery life)? On the other hand, I have no interest in changing my bios settings every time I boot to Windows so it would be much confortable to have it turned on all the time. The best solution would be to find out why AHCI does this and how to configure udev to avoid it. And I don't know how.I have OpenSuse 11.2, kernel 2.6.31.12
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Dec 9, 2010
I have a laptop configured with 2 partitions. The file ( Ubuntu ) partition which is about 30GB and a second 'data' partition of about 100 GB. On this data partition, I save all my digital photos ( about 20 GB ).When I installed Digikam, it seemed to compile its database on the smaller partition and left me with no space and error messages because of it.I managed to get rid of Digikam and regain space.Is there any way, I can re-install Digikam and stop it doing this ?
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Mar 21, 2011
process kslowd00/kslowd001 it eats 60% of my cpu and 15% of my memory ... i can't kill it even as root.this process makes my computer slower than" IBM 704 running fortran programs "... I've faced this process using Fedora 14 and now with Scientific Linux 6(RHEL 6 recompiled) SL 5.5 didn't have this.
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Mar 19, 2011
I'm working on a simple data processing script.My script uses a loop with getline to check for the value on the next line to decide if it's time to terminate the loop.This works dandy, but the problem is that getline eats that line, which then isn't processed by the rules in the remainder of the script (even though I want it to be). To illustrate what I mean, consider this simple gawk script:
Code:
{
print $0
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May 30, 2009
im using fedora 10 with gnome on a laptop, i want to increase power to my wifi adapter as im only getting 40% connection strength to the nearest wifi AP (about 20 feet) in windows under power management there is a slider with best performance against battery life, is there a similar setup in fedora 10? ps, if explained fairly well, i dont mind shell scripting (bash) and compiling.
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Jun 21, 2010
I am using Ubuntu 10.04 64-bit and I purchased a new ALFA AWUS036H wireless card. I would like to know if this "1Watt" wireless card is configured for full power. iwlist wlan0 txpower results:
wlan0 unknown transmit-power information. Current Tx-Power=27 dBm (501 mW). It appears to me that I should be able to increase the power. "iwpriv wlan0 highpower 1" does not work. Do I need to patch the new default driver that comes with Ubuntu 10.04 64-bit with the aircrack one following these directions:[URL]...? Monitor mode and a injection tests seem to work fine with the driver I have installed.
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Jun 4, 2010
I use Squeeze with Xfce. My problem is that recently (after the xfce updates) the xfce power manager doesnt react to the power button - it is set to suspend. I dont have gnome-power manager or anything like it running.
If i reboot the computer, the power button will work but if i suspend and resume, it doesnt work again.
The computer is built on an Asus M3N78-VM mobo (2GB RAM/Athlon3200+ single core).
acpi_listen detects the button press.
Any thoughts?
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Apr 4, 2011
I'm looking for any power monitoring devices for Linux to allow monitoring power quality, voltage changes, and outages. This would be for North American three phase power system. I want to have this data fed live to my own program. It should be something much better than just jury-rigging a circuit to fee the power waveform into 2 or 3 audio cards.
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May 28, 2010
On the last release, I had this app installed where I could pick my power profile. I could use power conservatively, and performance would suffer a bit, but longer batt life,or I could have it automatically detect, or I could have the apps use all the power they want and then some. I'm looking to reinstall that app. What was the name of it?I can't remember, and so far, can't find.
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Oct 30, 2010
I had unplugged my PC last night as sometimes there's storms at night this morning I plugged in PC and the power light is blinking and the PC wont come on at all tried different power cord, same result
PC is a AMD athlon64 3300+ 2.4ghz SiS graphics
probably the power-supply or what?
If it is the power supply, how do I find new one as I've never had to replace anything on it or any other PC?
Also, I really need access to the hard drive but it's a weird hard drive and was wondering if I could put that hard drive in my K7 PC, which already has 2 drives in it can a pc have 3 drives? do I have to add/have another ribbon cable for 3rd drive?
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Oct 15, 2010
After much research, I have found the solution to my intermittent wireless problem!Whenever the laptop is plugged into power, wireless is perfect, when I'm on battery, wireless is horrible.Here is the fix:
Code:
sudo iwconfig eth1 power off
Unfortunately, I have to type this in everytime I unplug the laptop.
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Jun 18, 2010
My problem arises two days ago. Power button of my keyboard has stopped working,why?It works well when I use windows.
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Aug 3, 2010
I've recently installed Ubuntu 10.04 and found the following problem: power management doesn't appear to be working. If I'm away from my computer for only a few moments, the screen is on dim when I return and I have to log on again. I've set the following states in Power Management: NEVER SWITCH OFF SCREEN and haven't ticked the DIM WHEN IDLE BOX. Can anyone help with this problem - it's infuriating. Meanwhile, I've gone back to Ubuntu 9.10 ...
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Jan 13, 2010
Will a Linux operating system lose data during a power failure as does a Windows operating system?
(If yes.) This has not come up before but I'm going to be doing some work I don't want to lose.
Could you either point me to a backup tutorial or give me the quick overview of preserving stuff with Ubuntu?
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Oct 7, 2010
I'm trying to get my screen to turn off whenever I lock my screen. I know that in Power Management, there's an option to turn off the screen after a set amount of time, and I know about xset dpms force off, but the former doesn't allow me to turn off the screen from the logout menu, and the latter only turns the screen off for a short amount of time (1 minute or so. The screen just turns back on by itself).
Is there a script I can modify to change what happens when "Lock screen" from the logout menu is selected, or is there a script I can add to the panel to lock the screen and then turn the monitor off (and turning it back on when I shake the mouse or something)?
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Feb 24, 2011
I need to disable the automatic power-off on shutdown so I can just withdraw the power myself. The reason for this is that the machine should power on itself when it gets power (which is accomplished by Resume on Power Failure in BIOS). I learned that I can turn off ACPI and APM by using the corresponding boot command options. Does this have any negative effect other than disabling standby etc.? Is there another easy to accomplish solution for this problem (maybe using linux from a readonly partition and make sure all programs are closed before I withdraw the power)?
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Jan 6, 2010
I have a box running Lenny and boot with lilo. Today there was a power failure and now the system is stuck on Lilo ..It doesnt get passed that. I tried to boot in single mode but the same thing is happens. How can I fix this problem
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