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  • How to prevent my screen from either dimming or the screen-lock starting when watching YouTube?

    - by Steven Roose
    My screen brightness used to dim after a few seconds to preserve battery. This is default in Ubuntu 12.04. However when watching video it should not dim. This works correctly when I watch videos using native applications like VLC. With in-browser video, however, the screen is not prevented from dimming. This is very annoying as you have to move your cursor every 10 seconds or so. I used to use Mac OSX where I had the same dimming settings and Flash videos were taken into account correctly. Anyone an idea how you can make YouTube prevent your screen from dimming?

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  • Why does my fan run so hard on my Dell XPS 15z?

    - by Kilhoffer
    I recently bought a Dell XPS 15z. It came with Windows 7 Home Premium, but I really wanted to try out Ubuntu on it. I ran the Windows installer and was surprised how smooth the process was. Within 10 minutes, I had a dual boot setup with Ubuntu 11.10. It boots into Ubuntu just fine and everything seems to work. I've read a lot about problems with touchpad and wireless, but honestly, I've had none of those issues. The only thing that's really bothering me is the fan constantly runs fast. Under Windows, it rarely ever came on and when it did, it wasnt spinning that fast. What could be going on under Ubuntu that would cause this? I want to get that under control because I want to use Ubuntu as my primary OS and screw Windows. Any help would be much appreciated! Note: I've read that others have set acpi=false, but I have not made any changes to the default installation. Should I make that change?

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  • How do I detect when my system wakes up from suspend via DBus or similar in a python app?

    - by con-f-use
    In a background Python script I need to detect, when the system just woke up from suspend. What is a good way that does not rely on a root script but rather on python modules such as DBus? I'm new to dbus so I could really use some example code. From what I read it's related to org.freedesktop.UPower /org/freedesktop/UPower org.freedesktop.UPower.Resuming Can anyone help me out with some code that connects the resuming signal to callback?

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  • files power_profile and power_method missing on ubuntu 12.04 after clean isntall

    - by Nikola
    OK here is the problem,I am using gnome-shell, ubuntu 12.04, kernel 3.2.0-32-generic-pae and the proprietary drivers for my ati card (Installed via "additional drivers") , the laptops is a hp 4310s probook and i want to control the power_profiles and power_method , because my GPU temp is high. before i reinstalled ubuntu 12.04, i used the .sh method on startup to write to those files, and everything worked like a charm, but now they are missing, and i can't create them.this is what i get when i try to create the directories mkdir: cannot create directory `/sys/class/drm': No such file or directory How can i can get them back?if you need some information , just ask and i will give it.

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  • Hibernation is still missing from menu in 13.10 after enabling via polkit. How to enable?

    - by LiveWireBT
    I know that since 12.04, we need to add a policykit rule to enable hibernation (see question How to enable hibernation? and the Official Documentation). I can successfully bring my laptop into hibernation mode with sudo pm-hibernate or sudo s2disk, so the rule is in place and works, but the hibernation entry is still missing in the menu. I can tell from looking through the source of the indicator-session package (but not understanding the whole code) that there is still a hibernation menu entry in the code and it should be displayed when the system is capable of hibernating. Please calm down if you're enraged by this. This is very unlikely to be a conspiracy, but rather a bug/regression on a deeper level, which can happen when you move code around or replace it. Question: What needs to be done in 13.10 to properly tell indicator-session that the system can hibernate? Possible duplicate: Hibernation still not available - No activity, because saucy was in development at that time, so out of scope for AskUbuntu. Related bug report: https://bugs.launchpad.net/ubuntu/+source/indicator-session/+bug/1232814

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  • What are some good examples of Powernap scripts and its use?

    - by shootingstars
    I would like to use powernap for putting my media server into suspend mode, and I haven't been able to find any example /etc/powernap/action scripts out there, except these: one two three Does anybody have a good script or recommend particular techniques with its use? From the comments of the default /etc/powernap/action script: # You may do one of: # 1) Write your own custom script below and make this file executable, # calling some specific action, such as: # /usr/sbin/pm-suspend # /usr/sbin/pm-hibernate # /sbin/poweroff # echo 'I am wasting electricity' | mail [email protected] # 2) Replace this file with an executable script or binary # 3) Symlink this file to some other executable script or binary

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  • How to enable hibernate on Ubuntu 13.10?

    - by mjwittering
    Something I usually do after installing Ubuntu is reactivate the hibernation function. I find it quite useful to function for the more energy concious. Typically, I'd complete the instructions in this tutorial for Ubuntu 12.04 and I'd be back in business. However, it does seem to work any more. Any suggestions? http://www.howtogeek.com/113923/how-to-re-enable-hibernate-in-ubuntu-12.04/ sudo gedit /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla [Enable Hibernate] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes

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  • ACPI 30k+ interrupts per second

    - by ultimatebuster
    My computer is currently doing something like 30k+ interrupts per second. This causes battery issues as well as the CPU being always stuck at the highest speed, making it very hot (overheating.. 75C at IDLE) Powertop info: 99.4% (32052.4) [acpi] <interrupt> 0.3% (115.9) [iwlagn] <interrupt> Just to clarify this started suddenly a couple of days ago. It didn't have this issue before (though I had a tonne of headaches with Linux on my computer in general..)

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  • Broken package ubuntuone-control-panel-qt

    - by baale7
    An interrupted installation of updates resulted in ubuntuone-control-panel-qt breaking and now I cannot install or update anything. There seems to be an error in python2.7 - ImportError: No module named _sysconfigdata_nd dpkg: error processing archive ubuntuone-control-panel-qt_13.09-0ubuntu1_all.deb (--install): When I try to reinstall the package via .deb a dpkg --audit yields: The following packages are in a mess due to serious problems during installation. They must be reinstalled for them (and any packages that depend on them) to function properly: ?python-pexpect Python module for automating interactive applications ?ubuntuone-control-panel-qt Ubuntu One Control Panel - Qt frontend ?hplip-data HP Linux Printing and Imaging - data files ?python-libxml2 Python bindings for the GNOME XML library ?apport automatically generate crash reports for debugging The following packages are only half configured, probably due to problems configuring them the first time. The configuration should be retried using dpkg --configure or the configure menu option in dselect: ?python-ubuntuone-client Ubuntu One client Python libraries ?python-ubuntuone-control-panel Ubuntu One Control Panel - Python Libraries --configure or --configure -a doesn't work Any help?

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  • How do I add pcie_aspm=force to my boot options?

    - by nargo7
    I just upgraded to 11.10 from 11.04 on my laptop (I don't have Windows) by downloading from the Ubuntu website. The laptop battery is in bad condition, but I was using it with the 11.04 plugged to AC all the time, and everything was fine. After installing 11.10, the laptop seems to not notice that it is connected to AC, so it shuts down a few minutes after starting. I read that I have to type pcie_aspm=force in the boot command, so I tried accessing it by pressing the "F6" key while booting, and then the other F keys, but nothing happened. I also found that I can write that instruction in the terminal window, but I don't know in which file or location. I would appreciate some help, but I am not a computer engineer, so please write the instructions in plain English.

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  • How to change keyboard sleep button to hibernate?

    - by Allu2
    I have a keyboard with a "sleep" button that does indeed make my computer go to sleep. The problem is that Ubuntu can't really handle sleep on my computer, causing it go into a non-responsive mode, having the CPU fan spinning at full speed and it stops receiving any input. Hibernation instead works mainly as it should. I would like to set the sleep key to hibernate, but the keyboard settings' hotkeys tab doesn't have this "sleep" keybinding and though I could make new one with hibernate --force as the command, it would require root rights to run. How can I change the keyboard sleep button action to hibernate?

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  • Shut down Netbook by closing lid - ubunti 13.10

    - by The Liquidator
    My wife has an Acer Aspire One (with the SSD Card and an SD expansion card). It has never been able to hibernate or suspend, always creating errors and occasionally trashing the data on the SD card, which is the home partition so it's unfortunate. To get around the problem I have set all exit methods to produce shutdown - she tends to simply shut the lid. I'm aware the default behaviour has for some time been to suspend, but I've got round that using the gnome tweak tool. However, I've just installed 13.10 and whilst I have installed the gnome tweak tool and set it to shut down the system appears to be ignoring/bypassing the setting, electing to suspend when the lid is shut. Can anyone tell me how to fix it please? I'm quite happy to get my hands dirty with the command line.

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  • Cannot resume from hibernate (s2disk)

    - by hwjp
    I seem to be able to hibernate OK using s2disk, but when I switch the laptop back on, it seems to hang half-way through the "resuming" menu. The splash screen looks healthy, it seems to be trying to resume from the correct disk, but it hangs about half-way through, with three little pips. One great help would be - where can I find the logs, and how do I get more verbose ones? There is some info in /var/log/pm-suspend.log, but that all seems fine, just lots of hibernate: success messages... How do I switch on more verbose logging in s2disk? And what about the resume process, where are the logs for that, and how can I make them more detailed? Background: the standard Ubuntu hibernate wouldn't work, so I've install uswusp and its associated tools - s2disk etc. That initially made things worse, but a fair amount of fiddling with its config, my swap size and so on seem to have got it at least seemingly successfully suspending...

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  • xubuntu 12.04 restarts after suspend - only from my account

    - by Yoav Aner
    After installing a clean xubuntu 12.04 I noticed that when I suspend, the computer suspends and turns itself off (you see the lights go off, and a click sound from the HD or fans), but then about 2 seconds later it turns itself back on again... The odd thing is that: It doesn't happen when booting from the liveCD I created another user account. When I log onto this account I can suspend fine. The computer stays off until I press the ON button When I remove my .config folder and it's clean - I can also suspend without problem on my account So it seems that something in my user config is causing this, but I can't work out what it might be. I tried diffing the two .config folders, and also all processes running with one account compared to the other (ps -ef |grep <username>), but couldn't find anything obvious that might be causing this...

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  • Fan working non-stop on a Dell Inspiron 5110

    - by cankemik
    First of all i'm new at ubuntu. I've only tried 11.10 before 12.04. Since then my notebook's(Dell Insprion 5110) fan was working non-stop. And also battery lasts in 2 hours. So i made a research. Some said it's about graphics card driver. I've tried so many things, so many codes but i get no result. I must say that i've tried ironhide and bumblebee. non of them worked 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 GF108 [GeForce GT 540M] (rev ff)

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  • Different fan behaviour in my laptop after upgrade, what to do now?

    - by student
    After upgrading from lubuntu 13.10 to 14.04 the fan of my laptop seems to run much more often than in 13.10. When it runs, it doesn't run continously but starts and stops every second. fwts fan results in Results generated by fwts: Version V14.03.01 (2014-03-27 02:14:17). Some of this work - Copyright (c) 1999 - 2014, Intel Corp. All rights reserved. Some of this work - Copyright (c) 2010 - 2014, Canonical. This test run on 12/05/14 at 21:40:13 on host Linux einstein 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64. Command: "fwts fan". Running tests: fan. fan: Simple fan tests. -------------------------------------------------------------------------------- Test 1 of 2: Test fan status. Test how many fans there are in the system. Check for the current status of the fan(s). PASSED: Test 1, Fan cooling_device0 of type Processor has max cooling state 10 and current cooling state 0. PASSED: Test 1, Fan cooling_device1 of type Processor has max cooling state 10 and current cooling state 0. PASSED: Test 1, Fan cooling_device2 of type LCD has max cooling state 15 and current cooling state 10. Test 2 of 2: Load system, check CPU fan status. Test how many fans there are in the system. Check for the current status of the fan(s). Loading CPUs for 20 seconds to try and get fan speeds to change. Fan cooling_device0 current state did not change from value 0 while CPUs were busy. Fan cooling_device1 current state did not change from value 0 while CPUs were busy. ADVICE: Did not detect any change in the CPU related thermal cooling device states. It could be that the devices are returning static information back to the driver and/or the fan speed is automatically being controlled by firmware using System Management Mode in which case the kernel interfaces being examined may not work anyway. ================================================================================ 3 passed, 0 failed, 0 warning, 0 aborted, 0 skipped, 0 info only. ================================================================================ 3 passed, 0 failed, 0 warning, 0 aborted, 0 skipped, 0 info only. Test Failure Summary ================================================================================ Critical failures: NONE High failures: NONE Medium failures: NONE Low failures: NONE Other failures: NONE Test |Pass |Fail |Abort|Warn |Skip |Info | ---------------+-----+-----+-----+-----+-----+-----+ fan | 3| | | | | | ---------------+-----+-----+-----+-----+-----+-----+ Total: | 3| 0| 0| 0| 0| 0| ---------------+-----+-----+-----+-----+-----+-----+ Here is the output of lsmod lsmod Module Size Used by i8k 14421 0 zram 18478 2 dm_crypt 23177 0 gpio_ich 13476 0 dell_wmi 12761 0 sparse_keymap 13948 1 dell_wmi snd_hda_codec_hdmi 46207 1 snd_hda_codec_idt 54645 1 rfcomm 69160 0 arc4 12608 2 dell_laptop 18168 0 bnep 19624 2 dcdbas 14928 1 dell_laptop bluetooth 395423 10 bnep,rfcomm iwldvm 232285 0 mac80211 626511 1 iwldvm snd_hda_intel 52355 3 snd_hda_codec 192906 3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel snd_hwdep 13602 1 snd_hda_codec snd_pcm 102099 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel snd_page_alloc 18710 2 snd_pcm,snd_hda_intel snd_seq_midi 13324 0 snd_seq_midi_event 14899 1 snd_seq_midi snd_rawmidi 30144 1 snd_seq_midi coretemp 13435 0 kvm_intel 143060 0 kvm 451511 1 kvm_intel snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi joydev 17381 0 serio_raw 13462 0 iwlwifi 169932 1 iwldvm pcmcia 62299 0 snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer 29482 2 snd_pcm,snd_seq lpc_ich 21080 0 cfg80211 484040 3 iwlwifi,mac80211,iwldvm yenta_socket 41027 0 pcmcia_rsrc 18407 1 yenta_socket pcmcia_core 23592 3 pcmcia,pcmcia_rsrc,yenta_socket binfmt_misc 17468 1 snd 69238 17 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_idt,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi soundcore 12680 1 snd parport_pc 32701 0 mac_hid 13205 0 ppdev 17671 0 lp 17759 0 parport 42348 3 lp,ppdev,parport_pc firewire_ohci 40409 0 psmouse 102222 0 sdhci_pci 23172 0 sdhci 43015 1 sdhci_pci firewire_core 68769 1 firewire_ohci crc_itu_t 12707 1 firewire_core ahci 25819 2 libahci 32168 1 ahci i915 783485 2 wmi 19177 1 dell_wmi i2c_algo_bit 13413 1 i915 drm_kms_helper 52758 1 i915 e1000e 254433 0 drm 302817 3 i915,drm_kms_helper ptp 18933 1 e1000e pps_core 19382 1 ptp video 19476 1 i915 I tried one answer to the similar question: loud fan on Ubuntu 14.04 and created a /etc/i8kmon.conf like the following: # Run as daemon, override with --daemon option set config(daemon) 1 # Automatic fan control, override with --auto option set config(auto) 1 # Status check timeout (seconds), override with --timeout option set config(timeout) 2 # Report status on stdout, override with --verbose option set config(verbose) 1 # Temperature thresholds: {fan_speeds low_ac high_ac low_batt high_batt} set config(0) {{0 0} -1 55 -1 55} set config(1) {{0 1} 50 60 55 65} set config(2) {{1 1} 55 80 60 85} set config(3) {{2 2} 70 128 75 128} With this setup the fan goes on even if the temperature is below 50 degree celsius (I don't see a pattern). However I get the impression that the CPU got's hotter in average than without this file. What changes from 13.10 to 14.04 may be responsible for this? If this is a bug, for which package I should report the bug?

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  • Set Idle Time in Ubuntu 12.04 Server

    - by ssanj
    I recently installed Ubuntu 12.04 Server and am looking for away for get the server to suspend after an idle time. When using the desktop version I could use the Gnome powersaving tool to specify the idle time. As I have no GUI on the server is there a way to set the server idle time via the commandline/config file? I will send the server a wake-on-lan packet to wake it up, if it is suspended and I need to use it.

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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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  • Ubuntu can't shut down correctly [closed]

    - by Luc1Hz
    Possible Duplicate: Problem with ubuntu 12.04 I am new to Ubuntu. I've installed 12.04 version of Ubuntu. It works fine but sometimes when i shutdown my PC from Ubuntu and when I try to start it again,nothing shows on the screen. It's always black screen instead of Acer logo (I have Acer aspire 5573) and the system restart again and again but and doesn't allow me to choose a OS (Ubuntu/windows,i use dualboot) To fix this I have to remove the battery and put it again.Then everything works fine. How do i fix this issue? I think that could be a incompatibility with the PC because everything works fine with windows. Thanks!

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  • xset: unable to open display

    - by user287878
    for the longest time after about 5 minutes my screen would blank out. Now the screen will go blank after 5 minutes but then 2 seconds after that it will light up white and keep the laptop backlighting on. I didnt change any settings to my knowledge it just happened randomly after powering it on one day and has occurred since then. I wish to resort back to blanking the screen out completely since i leave this computer on all the time and its hard to sleep with a huge white light all the time. "xset dpms force off" just yeilds me ---- xset: unable to open display ""

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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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  • Power Law distribution for a given exponent in C# using MathNet

    - by Eric Tobias
    Hello! I am currently working on a project where I need to generate multiple values (floats or doubles preferably) that follow a power law distribution with a given exponent! I was advised to use the MathNet.Iridium library to help me. The problem I have is that the documentation is not as explicit as it should be if there is any! I see multiple distributions that fit the general idea of the power law distribution but I cannot pinpoint a good distribution to use with a certain exponent as a parameter. Does anybody have more experience in that matter and could give me some hints or advice?

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  • programmatically controlling power sockets in the UK

    - by cartoonfox
    It's very simple. I want to plug a lamp into the UK mains supply. I want to be able to power it on and off from software - say from serial port commands, or by running a command-line or something I can get to from ruby or Java. I see lots written about how to do this with X10 with American power systems - but has anybody actually tried doing this in the UK? If you got this working: 1) Exactly what hardware did you use? 2) How do you control it from software? Thanks!

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  • SurfaceView for Camera Preview won't get destroyed when pressing Power-Botton

    - by for3st
    I want to implement a camera preview. For that I have a custom View CameraView extends ViewGroup that in the constructor programatically creates an surfaceView. I have the following components (higly simplified for beverity): ScannerFragment.java public View onCreateView(..) { //inflate view and get cameraView } public void onResume() { //open camera -> set rotation -> startPreview (in a thread) -> //set preview callback -> start decoding worker } public void onPause() { // stop decoding worker -> stop Preview -> release camera } CameraView.java extends ViewGroup public void setUpCalledInConstructor(Context context) { //create a surfaceview and add it to this viewgroup -> //get SurfaceHolder and set callback } /* SurfaceHolder.Callback */ public void surfaceCreated(SurfaceHolder holder) { camera.setPreviewDisplay(holder); } public void surfaceDestroyed(SurfaceHolder holder) { //NOTHING is done here } public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { camera.getParameters().setPreviewSize(previewSize.width, previewSize.height); } fragment_scanner.xml <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <com.myapp.camera.CameraView android:id="@+id/cameraPreview" android:layout_width="match_parent" android:layout_height="match_parent"/> </RelativeLayout> I think I have set the lifecycle correct (getting resources onResume(), releasing it onPause() roughly said) and the following works just fine: pressing home and returning pressing Taskswitcher and returning rotation But one thing doesn't work and that is when I press the power-button on the device and then return to the camera-preview. The result is: the preview is stuck with the image that was last captured before button was pressed. If I rotate it works fine again, since it will get through the lifecycle. After some research I found out that this is probably due to the fact that surfaceView won't get destroyed when the power-button is pressed, i.e. SurfaceHolder.Callback.surfaceDestroyed(SurfaceHolder holder) won't be called. And in fact when I compare the (very verbose) log output of the home-button-case and the power-button-case it's the same except that 'surfaceDestroyed' won't get called. So far I found no solution whatsoever to work around it. I purposely avoid any resource cleaning code in my surfaceDestroyed(), but this does not help. My idea was to manually destroy the surfaceView like asked in this question but this seems not possible. I also tested other applications with surfaceViews/cameras and they don't seem to have this issue. So I would appreciate any hints or tips on that.

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  • audio power on AudioQueue

    - by Tomoyuki
    Hi everyone. I'm now creating an Application using speech recognition.To check the Audio Power coming in through the microphone, I wrote a method as follows. -(void)checkPower(AudioqueRef)queue{ UInt32 expectedSize= sizeof(AudioQueueLevelMeterState); AudioQueueGetProperty(queue, kAudioQueueProperty_CurrentLevelMeter, audioLevels, expectedSize); NSLog(@"average:%f peak:%f",audioLevels.mAveragePower,audioLevels.mPeakPower); } I found that sometimes mAveragePower was larger than mPeakPower, and when mAveragePower was 1.0, in other words, averagePower is regarded as max, mPeakPower was lower than 1.0. I think that generally this result is inpossible. please Let me know if you have any information about sound power on CoreAudio. thanks.

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