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• Environment font size is too small

  - by Adobe

  So I've chosen a font by System Settings - Application Appearance - Fonts And there I've adjusted all fonts to be of 14th size. And also checked "Use my KDE fonts..." in Gtk+ appearance. I've also did the same using kdesudo systemsettings But still some fonts are tiny! It's not the 14th size! Edit 2: I thought it might be one of Gnome font settings. So I've increased all fonts in gnome-tweak-tool sudo gnome-tweak-tool gconf-editor sudo gconf-editor No help! Edit: Ubuntu tweak also gives no help (note the tiny fonts!): Edit: It looks like the problem is with gtk3: when I compile emacs 24.0.92 with gtk3 - i get small menu fonts. When I do the same with a default gtk2 - everything is all right.

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• How to find and change the screen DPI

  - by Luis Alvarado

  I am trying to find and then change the screen DPI in 12.04 and 12.10 but I can't seem to find any app or config file that can do this. Is there any app or conf file that I can use to change my screen dpi? Note that this is for 12.04+ so the following will not work: How do I change the font DPI settings? How to change the screen DPI in 11.10? Is it possible to change font DPI in 11.04? They are basically changing the font size, not the actual screen DPI

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• Why does installing Grub2 give an "ISO9660: filesystem destruction..." warning?

  - by Ettore

  I have installed Ubuntu 12.04 on my computer, but at the end of the installation it gave me an error and it didn't install grub2. Now I'm trying to install it using the live cd: This is my sudo fdisk -l: Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x6af447e6 Device Boot Start End Blocks Id System /dev/sda1 * 2048 781459455 390728704 7 HPFS/NTFS/exFAT /dev/sda2 781459456 789272575 3906560 82 Linux swap / Solaris /dev/sda3 789272576 976773119 93750272 83 Linux After mounting and chroot the linux partiton, I give grub-install /dev/sda command, and I get: /usr/sbin/grub-setup: error: hd0 appears to contain a iso9660 filesystem which isn't known to reserve space for DOS-style boot. Installing GRUB there could result in FILESYSTEM DESTRUCTION if valuable data is overwritten by grub-setup (--skip-fs-probe disables this check, use at your own risk). (same error even with grub-install --recheck /dev/sda) What can I do? I also tried boot-repair, but I get this error: http://paste.ubuntu.com/1069353/

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• What is the recommended way to empty a SSD?

  - by Lekensteyn

  I've just received my new SSD since the old one died. This Intel 320 SSD supports TRIM. For testing purposes, my dealer put malware, err, Windows on it. I want to get rid of it and install Kubuntu on it. It does not have to be a "secure wipe", I just need the empty the disk in the mosy healthy way. I believe that dd if=/dev/zero of=/dev/sda just fills the blocks with zeroes and thereby taking another write (correct me if I'm wrong). I've seen the answer How to enable TRIM, but it looks like it's suited for clearing empty blocks, not wiping the disk. hdparm seems to be the program to do it, but I'm not sure if it clears the disk OR cleans empty blocks. From its manual page: --trim-sector-ranges For Solid State Drives (SSDs). EXCEPTIONALLY DANGEROUS. DO NOT USE THIS OPTION!! Tells the drive firmware to discard unneeded data sectors, destroying any data that may have been present within them. This makes those sectors available for immediate use by the firmware's garbage collection mechanism, to improve scheduling for wear-leveling of the flash media. This option expects one or more sector range pairs immediately after the option: an LBA starting address, a colon, and a sector count, with no intervening spaces. EXCEPTIONALLY DANGEROUS. DO NOT USE THIS OPTION!! E.g. hdparm --trim-sector-ranges 1000:4 7894:16 /dev/sdz How can I make all blocks appear as empty using TRIM?

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• Can I copy large files faster without using the file cache?

  - by Veazer

  After adding the preload package, my applications seem to speed up but if I copy a large file, the file cache grows by more than double the size of the file. By transferring a single 3-4 GB virtualbox image or video file to an external drive, this huge cache seems to remove all the preloaded applications from memory, leading to increased load times and general performance drops. Is there a way to copy large, multi-gigabyte files without caching them (i.e. bypassing the file cache)? Or a way to whitelist or blacklist specific folders from being cached?

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• Where to put git "remote" repo on purely local git setup?

  - by Mittenchops

  I overwrote and lost some important scripts and would like to setup version control to protect my stuff. I've used git before, and am familiar with commands, but don't understand where I would put my "remote" repository on an install set up on my own machine---the place I push/pull to. I don't intend to share or access remotely, I just want a little source control for my files. I followed the instructions here for setting up my staging area: http://stackoverflow.com/questions/4249974/personal-git-repository But where do I put git "remote" repo on purely local git setup? How does the workflow work then? On the command in the above: git remote add origin ssh://myserver.com:/var/repos/my_repo.git Where should I put/name something like this? If I have multiple different projects, would they go in different places? I'm running 11.10.

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• What is "Task" in the output of "apt-cache show package_name"?

  - by vasa1

  When I run apt-cache show inkscape, the bottom of the output has: Description-md5: fed6589659211fb40b80d03dda6e5675 Homepage: http://www.inkscape.org/ Description-md5: fed6589659211fb40b80d03dda6e5675 Bugs: https://bugs.launchpad.net/ubuntu/+filebug Origin: Ubuntu Supported: 9m Task: ubuntu-usb, edubuntu-desktop-gnome, edubuntu-usb, ubuntustudio-video, ubuntustudio-graphics But when I run apt-cache show pdfgrep, the line beginning with Task is absent: Description-md5: 8c8a5397f782d81d957740280eb8f352 Homepage: http://pdfgrep.sourceforge.net/ Description-md5: 8c8a5397f782d81d957740280eb8f352 Bugs: https://bugs.launchpad.net/ubuntu/+filebug Origin: Ubuntu Why is the line beginning with Task present for some packages and not for others?

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• How to prevent script not to stop after apt-get?

  - by Eonil

  I keep some bash snippets and copy&paste them when I needed for management. But I discovered apt-get cancels script execution. Here's my script where problematic. apt-get -y install gcc g++ make cmake perl cd ~/ mkdir t1 cd t1 I copy & paste this script on OS X Terminal to Ubuntu 12.04 LTS server (fresh install on VM) Script always stop after apt-get finished. I run this command with root account like this. ssh user1@server <password…> sudo su <password…> apt-get -y install gcc g++ make cmake perl cd ~/ mkdir t1 cd t1 Can this be a problem? Or why my script stops after apt-get finished, and how to make it to continue?

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• How can I customize an icon on the dash/launcher?

  - by user26272

  all. I have a question that has been bugging me recently.. Say I install Blender.. I am using the Bumblebee project thing, so in order to properly use it, I have to go to the terminal and type "optirun blender". If I just click on the icon on the dash, it will run without the proper parameter being passed. Is there a way I could customize the Blender launcher on the dash so it would always launch it with the optirun parameter? Thanks.

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• Wifi works perfectly on Windows, but drops on Ubuntu

  - by alecRN

  I have a dual-boot computer with Windows XP on one partition and Ubuntu 10.10 on the other. In Windows XP I can connect to a hidden wireless network (WPA-PSK AES) perfectly, and I was finally able to install the driver for the adapter on Ubuntu (RNX-N180UBE, hardware id RTL8191SU). It works fine when I first boot the computer and log in, but then after a few minutes the network suddenly stops working completely. If I try to reconnect it, the network manager claims to have connected, but in actuality it's still down. At some points, I have been able to connect to a public network even while the private network didn't work, but that eventually wouldn't work at all either.

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• How to make Google SketchUp work with Intel graphics in Wine?

  - by haltman

  Hi, everybody! My pc has an Intel DH57JG mainboard, I've installed wine, launching sketchup I receive error that I don't have OpenGL installed, is there a way to configure/install it? On my previous pc with an NVidia video card installing official NVidia driver resolved it. Is there is a way to do the same with the Intel card? Running locate libgl on a terminal returns no results. thanks in advance.

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• Minerva in wine

  - by Klemik

  First of all, I've tried to install adobe air on ubuntu 13.10 64-bit without any success (yes, I've read the posts here, but none of them have helped (it's always some dependency that says "but it wont be installed"). Then I decided to try running it thru wine. Installed adobe air with no problems. Now the tricky part - how do I run it ? Adobe Air has only exes' to update itself, and the minerva has and .air extension. Ive tried even something like rundll32 Adobe Air.dll (with no success of course).

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• ASUS X53S Intel Graphics and Unity 3D

  - by Nordlöw

  I just bought a ASUS X53S. Everything works flawlessly except that I can't run Unity 3D on it because NVIDIA Linux drivers currently doesn't support Optimus. So I'm stuck with the other integrated Intel Graphics Adapter. I'm already installed BumbleBee but it doesn't help with Unity 3D thing. Will the Xorg driver ever support OpenGL and especially GLX_texture_from_pixmap so that Unity 3D will work with it? The Intel driver is really snappy with Unity 2D and seems to support most other X acceleration features such as smooth scrolling.

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• Why doesn't InkScape recognize the Ubuntu color palettes?

  - by Octavian Damiean

  InkScape 0.48.2 refuses to show my newly added Ubuntu color palettes in the color palettes selection menu. I have downloaded the Ubuntu color palettes for GIMP/InkScape from design.canonical.com, extracted the files and copied them to /usr/share/inkscape/palettes/ where all the other color palettes are. I've even made sure that all the files have the same rights, just in case. What am I missing?

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• Graphics corrupt after upgrade from 11.10 to 12.04

  - by RiaanZA

  I'm stuck at the moment with an ubuntu that boots into an unusable white screen after upgrading from 11.10 to 12.04. I've tried booting into safe X mode but it just throws me back to the safe menu every time. Restore previous graphics driver, use default graphics configuration and set up new graphics configuration all don't work either. I've tried various methods of resetting the graphics from the command line, but none are working due to unmet dependencies. These cannot be fixed by doing the normal "apt-get -f install" because its saying there is a dpkg error in var/lib/dpkg/status (blank line relating to skype-wrapper). I haven't been able to find any other way to fix the dependencies yet. Can someone please give me some advice on what to do, I really don't want to go the re install route.

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• How to correctly set permisions for all subfolders and files

  - by Saeid87

  I am following the guide to install TinyOS on Ubuntu 12.04 I have done up to step 3, But I am not sure if I have done the step 3 correctly. Because by doing the step 4 I get the permission error : saeid@saeid-Satellite-C660:~$ tos-install-jni /usr/bin/tos-install-jni: 13: [: =: unexpected operator Installing 32-bit Java JNI code in /usr/lib/jvm/java-6-openjdk-i386/jre/lib/i386 ... install: cannot create regular file `/usr/lib/jvm/java-6-openjdk-i386/jre/lib/i386/libgetenv.so': Permission denied Can you please tell me what would be the actual commands for step 3? What I have to replace with following lines?: /opt/tinyos-2.x files: chown -R /opt/tinyos-2.x Change the permissions on any serial (/dev/ttyS), usb (/dev/tts/usb, /dev/ttyUSB), or parallel (/dev/parport) devices you are going to use: chmod 666 /dev/ I mean how would you do those steps in your ubuntu?

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• How to ensure nvidia_current module loads during boot

  - by Aras

  I am running Ubuntu 12.10 on an Asus G75V laptop with nvidia gforce GTX 660M. I first run 12.04 on this machine and was able to install nvidia_current drivers from swat ppa: sudo apt-add-repository ppa:ubuntu-x-swat/x-updates sudo apt-get update sudo apt-get install nvidia-current This worked in 12.04 and after rebooting the machine my graphics where working properly. After upgrade to 12.10 however, the machine boots into a low resolution desktop which I can not really interact with. I suspect this is due to the driver not being loaded properly. To fix this, I have to switch to ctrl+alt+F1 session and manually load the nvidia_current module and restart the desktop manager: sudo modprobe nvidia_current sudo service lightdm restart Now everything works fine again. However, I would like not to have to do this every time I reboot the machine. I also dont want to hack an script to do this on load. Basically, if things are setup currectly, the nvidia_current driver which is installed should load. How can I make sure nvidia_current driver module loads properly when system starts?

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• How can I get my wireless webcam to work?

  - by hellocatfood

  I recently bought this wireless webcam. I'm having trouble getting it to work on Ubuntu 11.04. I ran lsusb and got the folowing information about the device Bus 006 Device 003: ID 0416:a91a Winbond Electronics Corp. I did a Google serach for teh device ID and this website informs me that it matches the LogiLink Wireless Webcam (so Maplin probably just rebranded this!). What this website states is that this device should work, which it doesn't. The problem I'm facing is that I don't get any actual video being streamed or shown. The built in microphone works and, when running Cheese, when I press the camera button on the webcam itself the software recognises that the button is pressed. On that note, when running cheese from the terminal with this webcam attached I get the following error libv4l2: error getting pixformat: Invalid argument libv4l2: error setting pixformat: Input/output error Any help is appreciated

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• How do I install VirtualBox in 13.04?

  - by user155708

  I install the application using the .deb, but I can't get a virtual machine to boot. How to install it correctly from the beginning? Opening my newly-created XP machine yields this message: Failed to open a session for the virtual machine Windows fucking sucks. VT-x features locked or unavailable in MSR. (VERR_VMX_MSR_LOCKED_OR_DISABLED). Result Code: NS_ERROR_FAILURE (0x80004005) Component: Console Interface: IConsole {db7ab4ca-2a3f-4183-9243-c1208da92392}

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• "Failed to fetch" while updating

  - by Farouk BA

  I'm trying to update from ubuntu 12.10 lately but I keep getting the "Failed to fetch" error. W: Failed to fetch ht tp://security.ubuntu.com/ubuntu/dists/quantal-security/Release Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file) W: Failed to fetch ht tp://archive.ubuntu.com/ubuntu/dists/quantal/Release Unable to find expected entry 'independent/source/Sources' in Release file (Wrong sources.list entry or malformed file) W: Failed to fetch ht tp://archive.ubuntu.com/ubuntu/dists/quantal-updates/Release Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file) W: Failed to fetch ht tp://archive.ubuntu.com/ubuntu/dists/quantal-backports/Release Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file) E: Some index files failed to download. They have been ignored, or old ones used instead. I changed the server and deleted the source lists from /var/lib/apt/lists/ like some answers say but still. This is really annoiying.

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• Ubuntu 12.04 Very slow especially with Android Studio

  - by Dew

  I have an old laptop with the following specification: Memory: 485 MiB, Processor: Genuine intel CPU T2300 @ 1.66 GHz ×2, OS Type: 32 bit, Disk: 78.1 GB, I installed on it Ubuntu 12.04 LTS and I noticed that the overall system is very slow in responding. I tried to search about that in the internet and I found some articles talking about how to make Ubuntu 12.04 LTS run fast I applied all what they said including download LXDE desktop environment and then nothing different in the system response time. Then I need to develop some android applications so, I download Android Studio (Beta) 0.8.6. The problem became worse than before whenever I tried to open the Android Studio the screen is frozen for some minutes then it took time to download the projects and initialize the work space also, when I tried to move the cursor he is move very slowly. When I tried to run my first application on the AVD it took three hours and still not run yet. I delete the Android Studio and install it again several times, I was trying to solve the problem but still nothing change. Please if you have any suggestions that may help me make my laptop and Android Studio work faster I will appreciate it for you. Thank you in advance.

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• ATI Radeon HD7000 Series (Laptop) - Switch Mode Between ATI & Intel Integrated GPU. Stuck on Boot Screen On Intel GPU Selection Mode

  - by Monkey Drone

  Laptop Specs: HP Pavilion G6-2020SE GPUs 1) ATI HD7000 Series 2) Intel Integrated OS Installed: x) Ubuntu 12.04 (64 bit) i) ATI Graphics Card Drivers Installed From AMD website. Note: Graphics Card Drivers are Working Fine in 3D Mode. It runs a little Hot as it should since its a GPU. Observation) AMD Catalyst Control Centre Lets me Choose If I want to run the system in HIGH-END (ATI GPU) OR Intel Integrated (Better battery life) While I am on High End GPU Choice, Ubuntu works fine. Problem) But when I switch to Intel Mode in the AMD CCC and reboot the Machine. Ubuntu goes into 'Low Graphics Mode'. The problem is not that it goes into low graphics mode, it is completely expected since I am no longer using the ATI GPU but the integrated Intel GPU. Problem starts with the 'Selection' of the options. During that screen, I have no mouse on the screen (even tried plugging in an external USB mouse) & No Keyboard functionality. Thus I am left completely disabled to choose any option and load into Ubuntu. The Only thing I can do is switch to a terminal and enable ATI GPU through command-line and Ubuntu works Fine again. Is it a bug that there is no mouse/keyboard available to me during the startup of Ubuntu when its launched in Low-Graphics Mode? Any suggestions on how to pass through that? My palms are sweating as I write this down because the ATI GPU is really heating up my laptop. I dont want to boot into Windows or keep it around any longer than necessary. Please advise with help and directions. Sincerely, MonkeyD Edit1: The Answer by Celso has helped me switch to Intel, thus giving me sufficient battery power. Kudos to Celso. Now I can at least use my laptop for the time being without having it burn hair off my skin. I am still looking for answer to my original question of, 'why is lightdm not working properly when I switch to Intel GPU using ATI HD7000 series official drivers provided by AMD'.

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• Pipe an infinite stream to internal loop?

  - by Sh3ljohn

  I've seen a lot of things about redirecting stdout to a TCP socket, but no real example of how to do it in practice, specifically when the output stream generated by the first "command" never ends. To talk about something concrete, let's take programs like servers that typically output their log endlessly to stdout (well, as long as they run). If you redirect the output to a log file on the disk, then this file is always open (therefore not readable by others?) and grows infinitely, which eventually is going to cause problems. This might be a nood question, but I don't know what it does or how to do it so. How to redirect the output of a command to the internal loop? I want to make sure that data is sent EVERY time something is written to stdout, and that the pipe won't wait for the command to end (never happens ideally!). Is that right? If 2 is true, is there a buffer system to send chunks of data once it reaches a certain size only? Could you give me concrete command line examples to do the above? Thanks in advance

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• could not save the file /usr/... permission denied (13.04)

  - by plaguedoctor

  I am running Ubuntu 13.04 and am trying to create an .sh file for conky in /usr/bin using gedit. When trying to save I get the error dialogue: Could not save the file /usr/bin/conky-start.sh You do not have the permissions necessary to save the file. Please check that you typed the location correctly and try again." From searching, I think I have to run a command in terminal to allow permission, but I couldn't find out what that is. Edit: I'm trying to create the file conky-start.sh, not change or run it. Thus far, I've opened gedit, copied and pasted some required info from the net, and I'm trying to save-as /usr/bin/conky-start.sh Perhaps I need to create the file first in terminal, then edit it? How would I do that?

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• How to control gnome-terminal from Python scrypt?

  - by user936401

  I am developing an application in PyGtk, and would like to launch a gnome-terminal and output commands to it. My user should then be able to modify the command, or maybe ignore using the up arrow ... etc. I have been able to launch a terminal, but can't work out how to send commands. This is how my application starts: class App(Gtk.Window): def __init__(self): Gtk.Window.__init__(self) process=subprocess.Popen(["gnome-terminal", "--class=App", "--name=app"], shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE) response,error=process.communicate()

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