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• How do I fix this half screen problem?

  - by link1275

  I just installed 12.04, and my entire screen is being displayed entirely on the top half of my screen. The bottom half is always black or some technical garbage from the boot up. To interact with the bottom half of the screen I have to move the mouse over the screen to pull part of the bottom half of the screen on top and vice-versa. Does anyone know how to fix this? Also my computer told me, at startup, to go to here: http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware.

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• Deactivate one graphicdevice in a SLI system

  - by NobbZ

  As it is now, I have a Gaminglaptop with 2 GeForce 9800M GT with SLI activated, Ubuntu 12.04. When I use any graphicdriver that is aware of acceleration features the system crashes after a short period of time. After I removed and purged jockey my system runs stable but slowly, but I can use it for now (I have to choose recovery at startup and the resume boot, botting up normal results in a colorflickering screen). But since the system is runs slowly, I would like to try to work with only one graphicdevice. First test device A, if that doesn't work test with device B. A testing tool for Windows already told me, that one of the cards doesn't work properly, but it doesn't say which one (same crashes in Windows when programs or desktop uses acceleration). Therefore I wanted to ask, if there is a way to reinstall any nVidia (or third party) driver, deactivate one of the two devices and test the stability?

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• How to keep specific old kernel on my next kernel upgrade?

  - by tvrtko

  I just updated my Ubuntu 14.04 and got a new kernel. This new kernel is not working properly for me so I booted the previous version. Let's call this good old working version "3.13.0-24.47". Now, I want to keep this "3.13.0-24.47" version until I decide to delete it manually. I want to be able to upgrade my kernel each time there is a new version in hope of getting the one which works again. Until then, I want to use the "3.13.0-24.47". I'm afraid that next update will delete my "3.13.0-24.47" version because there are only two kernel versions available at a given time on my system (/boot).

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• Where is EasUS coming from?

  - by Malcolm Lawrie

  I have downloaded the Universal USB Installer and Ubuntu 12.04 Desktop as described on your site. I installed it to a 16Gb USB stick including the format option. Now when I try to boot from the stick into Ubuntu I get a couple of lines of script then a screen with EasUS Todo Backup with Backup. Recovery, Clone and Tools options, but no sign of Ubuntu starting. Where is the start Ubuntu option please? I can find no reference to EaseUS on your help pages.

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• Is there a way to force lubuntu screen resolution?

  - by za1

  I have a Dell Inspiron 4000, 900 Mhz Pentium III, 192 MB RAM,10.1 GB disk running Lubuntu 12.04. When I start the computer, and I check the display resolution, Monitor Settings claims that the max resolution is 1024x768. I then connected another monitor I had lying around, rebooted, and now the laptop monitor looks normal,and monitor settings claims that 1280x1024 is the max resolution (it is) and the other monitor doesn't turn on. (black screen) The external monitor is not broken. Is there a way to, without the external monitor, force the laptop monitor resolution to 1280x1024? (The following is another question) - How can you run commands automatically at startup? Specifically "xinput 18 118 0" (without quotes) The first question is important, I can live with typing the second one at every boot. Thanks

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• Is it ok to run with unknown video device?

  - by JTex

  I'm new to linux and just starting to learn. From what I've read and experimented with there's no more support for older ati mobility cards. I resolved a few boot issues with my first install of Ubuntu 12.10(now on clean install #3) and my system seems to function ok with video unknown. Picture quality is good and no issues with video playback. It functions for my purposes. Should I leave it as is......or will this cause problems I'm not aware of? Thanks

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• Ubuntu 12.04 Battery problem

  - by Rahul

  I have my laptop ( Dell Inspiron 14R) on dual boot with Ubuntu 12.04 and Windows 7. While using Windows 7, I used to get about 2.5-3 hours on battery fully charged (with my cellphone connected for 3g Internet). The battery is almost 2 years old. But in Ubuntu 12.04, I'm getting only about 1-1.5 hrs on battery. I tried installing jupiter, also tried some tweaks that were mentioned in the forums, like editing the grub file. But nothing seems to work. I am not sure if any app is draining the battery. The one application that I use always is firefox. It's always open. Is there any way I could get at least 2.5 hrs of battery time?

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• No sound into headphones

  - by quack1

  I will make it quick : I have no sound in my headphones when they are plugged in on my Asus F200CA running Ubuntu 14.04, but : I have sound in the laptop speakers when the headphones are plugged out. If I boot up my laptop on a Live USB running Ubuntu 14.04, I have sound in the speakers and in the headphones. If I open pavucontrol, I can "see" sound, but I can't hear it. I already did some of the actions listed here. I'm running Ubuntu 14.04, with Unity, and this bug appeared about a week ago.

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• Mouse stopped responding after installing Ubuntu Server

  - by Danijar

  It was 2 operating systems on my machine, Windows 7 and Ubuntu Desktop 12.04, both 64bit version. All works well, firstly I installed Win, then the Desktop version of Ubuntu, lasts's GRUB rewrites windows's boot and of course added it as a variant to load. Yesterday I wish to play with Ubuntu Server 12.04, and install it as a third operating system. During the installation Server's GRUB seems to rewrite that which installed earlier (background color became black, was purple). Firstly, newly installed GRUB generates me overmuch load options for Ubuntu Desktop, by two for each kernel version (normal and recovery modes). OK, it's bearable, but most thing, that the mouse on this machine is totally stops responding, regardless which operating system I choose to load. Hope somebody help me. Thanks in advance!

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• I can't get a native resolution of 1920x1080 on 11.10 (AOC f22 on a Nvidia Geforce GTS 450)

  - by Mikeeeee

  I have a problem were the highest resolution I can get is 1360x769, this is a 22 inch LCD monitor with a native resolution of 1920x1080_60 I have tried numerous drivers but nothing changed I tried editing the xorg.conf scipt with no success (I am a noob with linux though). Running many commands in terminal witch I got from people with similar problems only gives me errors like "Failed to get size of gamma for output default. I get edid checksum is invalid error on boot down also. I think there maybe a communication problem between my screens EDID and ubuntu although xp and windows 7 detect my screen without any errors and automatically set native resolution. also when I am installing ubuntu I get a horrible screen flashing every few seconds until I have installed the nvidia driver. pc specks if it helps x64 os, mainboard N68PV-GS, 4 gig ram, AMD Phenom(tm) 9350e Quad-Core Processor × 4, Nvidia Geforce gts450 512mb, hard drives set up in a onboard nvidia raid array striped. realy need to get a better resolution, 1360x769 does not look nice on a 22 inch screen. ty

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• Installed 12.04 from CD problems with compiz-core - wont continue - just

  - by user70886

  Installed 12.04 from CD to clean hard drive but on first boot up says problems with compiz-core. Clicked continue with it not installed. After I sent info for help; it came back with some packages are not up to date. Said I need to update compiz-core and libylib2.0-0 Cancelled the process to send info (after second time) but it wont cancel and it wont load the desktop. What do I do now? Right click will let me create a new folder/document or organise desktop by name etc but I cannot see the usual system bar or left menu items. Is there a way to load the terminal and reload the desktop. If this was windows I'd use cntrl alt delete and run explorer to fix the desktop.

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• Update GRUB to reflect changed partition location

  - by soandos

  I currently have 3 partitions: Windows, Ubuntu, and swap. I want to move my windows partition by about 20GB. When I try to do this in GParted, it tells me that this will mess up GRUB, and that there is a page that can resolve these issues. However, this page does not actually mention my issue. I am not moving my boot partition (Ubuntu). How can I force GRUB to look for operating systems that are on the drive? I know that this is possible, because when Ubuntu was installed it found Windows without any issues. Additionally, if I create a copy of a partition, how can I add that to GRUB (I assume it will be the same command as above, but if not, what would it be)? Note: OS prober is mentioned here but it doest not list how to use it, or where to find it.

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• DIY Wirelessly Charged LED Lanterns

  - by Jason Fitzpatrick

  Earlier this year we shared a clever project that turned LEDs, batteries, and PVC into mini, waterproof, and virtually indestructible lanterns. This remake of the project makes the units rechargeable. Our favorite part about this project–the upgrade to an older project and the introduction of wireless charging aside–is the fact that the maker behind it is 15 years old. It’s great to see younger people taking an interest in tinkering! Wirelessly Charged Indestructible Lantern [via Hacked Gadgets] HTG Explains: What Is Two-Factor Authentication and Should I Be Using It? HTG Explains: What Is Windows RT and What Does It Mean To Me? HTG Explains: How Windows 8′s Secure Boot Feature Works & What It Means for Linux

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• How to recover partially removed components of ubuntu-desktop?

  - by Rick_2047

  So I was messing around with tasksel to install LAMP. Foolishly I unchecked the ubuntu-desktop item. About 25% through the process I realized it is removing my desktop components. So I closed the terminal window, but now maybe something went wrong. Many default applications are gone and I can't even boot into the desktop. I have a separate home folder so I don't really have to worry about data, but I did install a lot of other software which would be gone if I take reformat and reinstall. So is there a way to recover the desktop from a live CD?

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• Fatal Error when booting

  - by Denja

  I'm running Ubuntu 10.10 with ATI proprietary FGLRX graphic drivers When I boot, I can see this very quick message appearing; I don't have time to read it: **Fatal Error ..................................**(&@something i cant read) I searched through the log file in /var/log/ in order to find what is wrong and I did find something in the /var/log/Xorg.1.log: 21:31:08 [ 15.734] (--) using VT number 1 [ 204.647] Fatal server error: [ 204.647] xf86OpenConsole: VT_WAITACTIVE failed: Interrupted system call [ 204.647] [ 204.647] Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 204.647] Please also check the log file at "/var/log/Xorg.1.log" for additional information. [ 204.647] But this is already Xorg.1.log. And there is a Xorg.0.log also & Xorg.0.log.old but it doesnt have any error in it. My system seems to work properly and it seems its not affected by this But how do I correct this message? Any suggestions?

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• Compiz using 40% CPU on Ubuntu 13.10

  - by Olli

  After upgrading to 13.10, compiz process has started taking up to 40% of CPU resources. In addition, Unity is sluggish just like in this recent question Compiz at 30% of CPU on Thinkpad T420. My PC is HP Compaq NX6310 and Compiz version is 0.9.10.2. First I had error message during boot, but did find solution for that (Bug #1014289) by updating the kernel to newer 3.11.4, it did not change the CPU usage. For the CPU problem I tried solution for Bug #1221837 by adding the line MESA_GL_VERSION_OVERRIDE=1.4 in the file /etc/environment - that did not help me, so my problem seems not to be the same bug. Any suggestions on how to resolve this issue?

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• Wifi very slow on Ubuntu 12.04 but not on Win7, need help

  - by user84504

  I have an enormous problem: I've a Sony Vaio VGN-NR21S with win7 and Ubuntu 12.04 in dual boot. With Windows everything is fine (except that is windows) but with Ubuntu the wireless connection is awfully slow, basically unusable. I've already search for similar discussion but the solution proposed didn't worked. I've noticed this issue also in live mode both with ubuntu and linux mint. I've installed Ubuntu onto an Acer that shows the same problem when connected via wifi to my router, so I think that maybe the issue is about compatibility with my home router. I really need help, I don't want unistall ubuntu! Please tell me which output u need to help me, thanks.

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• How Can I Disable Windows 7's Aero Performance Warnings?

  - by Jason Fitzpatrick

  You know your computer isn’t cutting edge, but there’s no need for Windows 7 to constantly remind you. Read on to see how you can disable its constant nagging to adjust your color scheme to improve performance. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• Changing read-write permissions on my external Seagate hard drive

  - by Anthony_JKenn

  I have an external hard drive (Seagate Free Agent) that I normally download files to. I have a dual boot Ubuntu 11.10 along with Windows 7-64 bit. I can read all of my files in my external HD perfectly, but when I attempt to do a download of a file to this drive, I get an "unable to write because of read only" disk error. When I attempt to change the permissions of the disk through the "Properties" bar, I still get an error that I don't have the proper permissions to change permissions. I have heard of "mounting" the disk, but I am afraid of mistakenly reformatting and destroying all the data that I have currently on that drive. How best should I safely change the permissions on that drive so that I can write and download files to the drive?? The drive is listed under /dev/sdc1.

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• Can't read CDs, can't create USB... how do I install Ubuntu?

  - by user68080

  Hello everyone and thank you in advance for your time. I have troubles with the latest Ubuntu distribution: since I upgraded to 12.04 Ubuntu has started having troubles (internal errors, packages that crash repeatedly, I can't install new packages, Ubuntu Software Center crashes, Java apps that worked stopped working and display weird mistakes, files were corrupted... a mess). I ultimately decided to format everything and install 12.04 from scratch. I made a backup and everything, but now I have troubles installing ubuntu 12.04. Specifically, a CD I burned with Brasero that works on another PC is not read by my laptop (not at boot phase, nor inside Ubuntu), and when I try to create a USB with Ubuntu (following the instructions I found on the ubuntu site) Startup Disk Creator stops at 22% saying that "the codes do not match". Any idea on what to do next? No, I can't buy a new PC.

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• How can I implement full disk encryption for a disk containing Ubuntu with plausible deniability?

  - by Rupert

  I would like to have a disk that: has Ubuntu installed is fully encrypted is setup in such a way as to make denial of the existence of the Ubuntu install plausible Truecrypt provides the last two features but only for Windows: http://www.truecrypt.org/docs/?s=sys-encryption-supported-os The alternate installer for Ubuntu provides the first two features but not the last. I imagine that plausible deniability would be achieved by, at least: Having two installs of Ubuntu and 2 passphrases (or keyfiles) which would unencrypt each one. Moving any unencrypted data (such as /boot) onto a USB stick Are there any programs out there which support this feature set for Ubuntu?

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• Does booting a live USB cause writes to occur to it?

  - by InkBlend

  I know that Ubuntu will not and can not write to a live CD-R/DVD+-R when it is booting from it, as it is a read-only medium. However, the procedure (at least on the data level) for running Ubuntu off an optical disc is different from a USB drive, which is usually write-enabled. if I make a live USB, turn off persistent files, and boot from it, will any data be written to the USB drive (e.g. settings, error logs, temporary files)? Or will Ubuntu just read from it, nothing else?

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• No Internet Connection - ubuntu 11.10

  - by emersonhsieh

  I installed Ubuntu 11.10 recently. After the first bootup the computer freezes so I have to force-quit my computer. Then I turned on my computer after that. I tried connecting to the internet. My (and my neighbor's) wireless networks shown up, but no matter how many times I tried, I can't connect to my home network. I checked the password and the other laptop's internet works (a MacBookPro). It was a wireless network. What's weird is that the Wireless network worked when I was installing ubuntu How can I connect to the internet now? I don't have a wired network. Please Help! Any help will be appreciated Specs: ASUS F81Se, Windows 7 Dual-boot, I remember the wireless card was made by Atheros, 4GB RAM

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• Why does installing 11.10 or 12.04 on old laptops fail?

  - by Adam

  I recently reimaged my Lenovo t400 with Ubuntu. However, after wiping two other systems (Compaq Presario 2100 and Dell Latitude D600) both hUbuntu 11.10 and Ubuntu 12.04 fail to load on boot. I am concerned that there is some type of issue using Ubuntu on these older systems as every part of the process has been repeated/attempted several times in the same manner as practiced in the successful load of the newer Lenovo t400. I now have two laptops without an operating system as the discs/thumb drives that were formatted to load on these devices do not seem to work. I would appreciate any assistance that you may be able to provide. Regards, -Adam

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• Installed nvidia graphics driver (current, 8800GTX) has issues, how do I disable/uninstall it?

  - by Craig

  I installed the restricted nvidia graphics driver (current) on my computer, then restarted to finish the install. Upon reboot I got some prompt about there being an X server problem, It told me to try auto-fixing or something, none of its options worked, they all failed horribly and caused the computer to crash immediately on selecting any of them. I decided to re-install. Again I got in, downloaded updates, and installed the driver. This time upon boot the X-server immediately crashes and im brought to tty1. If I hit ctrl+alt+F7 I see a beige-background prompt says the usual about checking battery state, pulse audio etc., you see right before the x-server starts. According to X (if I do sudo startx) there are no displays, and the nvidia graphics driver is not working. First off, how do I set ubuntu back to the default driver (I have only a CLI right now -.-), then how do I install a more appropriate nvidia driver

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