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• Custom Xsession with Gnome visuals

  - by Siim K

  I'm trying to create a kiosk PC only for web browsing using this tutorial as a reference (only difference - I'm using Firefox instead of Chromium) It is working correctly in principle (only FF window opens when I log in using the Kiosk session) but it looks, well, super ugly. The scrollbar and right-click context menus look like from the 1990s - gray and boxy. How could I modify the session to get Gnome-like scrollbars/menus without the whole Gnome desktop (top/bottom panel etc)? My custom X session is currently set up like this: /usr/share/xsessions/kiosk.desktop: [Desktop Entry] Encoding=UTF-8 Name=Kiosk Mode Comment=Firefox Kiosk Mode Exec=/usr/share/xsessions/ffKiosk.sh Type=Application /usr/share/xsessions/ffKiosk.sh: #!/bin/bash while true; do firefox -height 768 -width 1024; sleep 1s; done

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• How can I run Gnome or KDE locally in Cygwin?

  - by John Peter Thompson Garcés

  Apparently it is possible to do this using cygwin ports, as can be seen in screenshots. I followed this how-to to get apt-cygports set up, and I used it to install gnome-session. This how-to supposedly gives the commands needed to run Gnome or KDE, but whenever I try to run Gnome, a blank X-window pops up and then quickly disappears. Here is the terminal output: $ startx /usr/bin/dbus-launch gnome-session xauth: file /home/jpthomps/.serverauth.4168 does not exist Welcome to the XWin X Server Vendor: The Cygwin/X Project Release: 1.10.3.0 OS: Windows 7 Service Pack 1 [Windows NT 6.1 build 7601] (WoW64) Package: version 1.10.3-12 built 2011-08-22 XWin was started with the following command line: /usr/bin/X :0 -auth /home/jpthomps/.serverauth.4168 (II) xorg.conf is not supported (II) See http://x.cygwin.com/docs/faq/cygwin-x-faq.html for more information LoadPreferences: /home/jpthomps/.XWinrc not found LoadPreferences: Loading /etc/X11/system.XWinrc LoadPreferences: Done parsing the configuration file... winDetectSupportedEngines - DirectDraw installed, allowing ShadowDD winDetectSupportedEngines - Windows NT, allowing PrimaryDD winDetectSupportedEngines - DirectDraw4 installed, allowing ShadowDDNL winDetectSupportedEngines - Returning, supported engines 0000001f winSetEngine - Using Shadow DirectDraw NonLocking winScreenInit - Using Windows display depth of 32 bits per pixel winFinishScreenInitFB - Masks: 00ff0000 0000ff00 000000ff Screen 0 added at virtual desktop coordinate (0,0). MIT-SHM extension disabled due to lack of kernel support XFree86-Bigfont extension local-client optimization disabled due to lack of shared memory support in the kernel (II) AIGLX: Loaded and initialized /usr/lib/dri/swrast_dri.so (II) GLX: Initialized DRISWRAST GL provider for screen 0 winPointerWarpCursor - Discarding first warp: 637 478 (--) 5 mouse buttons found (--) Setting autorepeat to delay=500, rate=31 (--) Windows keyboard layout: "00000409" (00000409) "US", type 4 (--) Found matching XKB configuration "English (USA)" (--) Model = "pc105" Layout = "us" Variant = "none" Options = "none" Rules = "base" Model = "pc105" Layout = "us" Variant = "none" Options = "none" winBlockHandler - pthread_mutex_unlock() winProcEstablishConnection - winInitClipboard returned. winClipboardProc - DISPLAY=:0.0 winClipboardProc - XOpenDisplay () returned and successfully opened the display. xinit: XFree86_VT property unexpectedly has 0 items instead of 1 xinit: connection to X server lost waiting for X server to shut down winClipboardProc - winClipboardFlushWindowsMessageQueue trapped WM_QUIT message, exiting main loop. winClipboardProc - XDestroyWindow succeeded. winClipboardProc - Clipboard disabled - Exit from server winDeinitMultiWindowWM - Noting shutdown in progress

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• Gnome Mplayer failed to open VDPAU backend libvdpau_nvidia.so

  - by Tim

  When I open an avi file under Gnome Mplayer, there is an error report: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory I then followed this blog to solve this problem, which suggests two ways. The first way is to call mplayer in terminal: mplayer -vo xv video.wmv This works for me. But I would like to try the second way, which is to write options in one of the configure files of Gnome Mplayer. I choose to write into ~/.mplayer/config, where I wrote: -vo xv But it does not work. So I was wondering if I make any mistake? What to write into the configure file? Thanks and regards!

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• Iptables on ubuntu Ubuntu 10.04.1 not working

  - by Kevin

  I am trying to block an IP address from accessing my server by using iptables, but didn't succeed. Here are the commands that I used. (after these commands, I still keep seeing 50.18.12.86 sending request to my Apache server). sudo iptables -F sudo iptables -I OUTPUT -s 50.18.12.86 -j REJECT sudo iptables -I INPUT -s 50.18.12.86 -j REJECT sudo iptables -L -n Chain INPUT (policy ACCEPT) target prot opt source destination REJECT all -- 50.18.12.86 0.0.0.0/0 reject-with icmp-port-unreachable Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination REJECT all -- 50.18.12.86 0.0.0.0/0 reject-with icmp-port-unreachable I have tried DROP instead of REJECT, but doesn't help.

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• Difference left/right super button

  - by Erik Keemink

  When I press my left super key the gnome shell appears and when I press the right super key it does not. Moreover pressing right super + T does open a terminal at once, but when using left super I have to press the t twice, when I press the t only once it is similar to just pressing the t without holding super left. This last point also occurs with other shortcuts that I defined (like super+L, super+E), but not with super+up/down/left/right. What I want is to press either super key to get the gnome shell and to use either super key in combination with T to open a terminal immediately (and similar with other shortcuts). I use Ubuntu 12.04 LTS and the gnome 3 shell.

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• How to get current gnome keyboad layout from terminal

  - by ftiaronsem

  For usage in a bash script, I need to get the gnome keyboard layout the user is currently using. For example if the user sets its keyboard layout to en-us , I need a bash command that prints me this. How can I get that information? Update: setxkbmap -query is unfortunatelly not working. Below is the ouput with the en (first command) and the de (second command) layout activated. Switching keyboard layout seems to be have some relation with gnome session configuration setxkbmap -query rules: evdev model: pc105 layout: us,de variant: , options: terminate:ctrl_alt_bksp,lv3:ralt_switch,grp:alts_toggle setxkbmap -query rules: evdev model: pc105 layout: us,de variant: , options: terminate:ctrl_alt_bksp,lv3:ralt_switch,grp:alts_toggle

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• Ubuntu Lenove OCZ Agility3 - No Grub after install

  - by Michael

  I've tried a dualboot (Win7 + Ubuntu) installation it on a Lenovo E330 with Agility3 240 Gigs... Conclusions: Ubuntu:: Ubuntu 12.04 x86_64 ( 21.06.2012 ) is not able to install grub in a bootable way. Grub will be installed and does update-grub during Installation, recognizes also the Win OS. But after a restart it boots directly to Windows.This is directly connected to the OCZ Agility3. On a good old fashion harddisk (those with the moving parts) Ubuntu is capable to install grub with no problem in a bootable manner. PinguyOS:: PinguyOS 12.04 LTS x86_64 (which is a Ubuntu based distro) is able to handle the Grub installation on OCZ Agility3. However they both use Grub 1.99... What i did:: Installed Windows. Installed Ubuntu. Installed PinguyOS. Grub Updates:: Grub updates are only through Pinguy OS possible, this means you have to edit the Ubuntu Grub entries manually after Kernelupdates on Ubuntu, in the PiguyOS sytem.. What i've already tried: Firmwareupgrade OCZ (livestick, successfull) Install Ubuntu Grub to sda Install Ubuntu Grub to sdc (Ubuntu Partion) Install Ubuntu Grub to /boot update-grub manually after install restore grub any ideas appreciated..

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• Disable auto-mount for particular partitions on usb drives

  - by nealmcb

  I have a big USB disk with 3 partitions: one for backup and two other bootable ones for installing and testing new distros. I want the backup partition automounted on boot. But I don't want the two test partitions automounted. Despite my use of "noauto" in /etc/fstab, something (gnome?) seems to be mounting them when I plug the drive it. LABEL=mybook /srv/backup ext4 defaults 0 2 LABEL=mybook-root /media/mybook-root ext4 user,noauto 0 2 LABEL=mybook-spare /media/mybook-spare ext4 user,noauto 0 2 In previous Ubuntu distributions it seems that it was possible to configure gnome so it would avoid mounting particular partitions on removable drives like USB: gnome-mount --write-settings --mount-options noauto --device /dev/sda1 This is no longer available in Lucid (when did it go away?) Is there another way to do this now?

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• Cannot Restore GRUB (Ubuntu 11.04 + Win 7)

  - by Benny

  I'm trying to fix GRUB on my PC, but I'm running into serious issues doing so. Any help would be greatly appreciated as I'm completely crippled right now. Here is the sequence of events for this PC: Installed Windows 7 Split full disk into two partitions (one for win7 and one for multimedia) Long time passed Split one of the partitions into two again Installed Ubuntu 11.04 on new partition A little time passed Windows 7 acting up, reinstall Ubuntu GRUB gone Tried restoring GRUB by mounting and grub-install from live USB Tried switching to a live CD instead of USB (thinking it might be the drive) Now I don't see GRUB and I'm getting "input/output" errors An example i/o error: ubuntu@ubuntu:~$ sudo fdisk -l Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xbe86aff6 Device Boot Start End Blocks Id System /dev/sda1 * 1 48727 391393280 7 HPFS/NTFS /dev/sda2 48727 77063 227612647+ 7 HPFS/NTFS /dev/sda3 77063 91202 113566721 5 Extended /dev/sda5 77063 90622 108908544 83 Linux /dev/sda6 90622 91202 4657152 82 Linux swap / Solaris ubuntu@ubuntu:~$ sudo mount /dev/sda5 /mnt ubuntu@ubuntu:~$ sudo grub-install --root-directory=/mnt /dev/sda mkdir: cannot create directory `/mnt/boot': Input/output error ubuntu@ubuntu:~$ cd /mnt ubuntu@ubuntu:/mnt$ ls ls: cannot access etc: Input/output error

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• 11.10 runs really choppy and slow, but not if I choose "Gnome Classic"

  - by Ingram

  I'd like to use Unity with Ubuntu 11.10, but everything from Unity runs really choppy and slow. I have an ATI graphics card and I have installed the drivers through "Additional Drivers". The drivers work, as I can play 3d games flawlessly. When I drag the mouse box around or drag windows around, it is really choppy. I previously had Ubuntu 10.10 and everything worked fine. I installed gnome 3 on 11.10 and it does the same thing Unity does, very choppy and slow graphics. However, if I choose Gnome Classic, everything is fine. I can drag the mouse box all around with no problems. I can drag windows around and it looks and feels great. Is this a bug with Unity? Are others experiencing this? Or is there something I can do to fix this?

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• Why can't I get a working session with vnc4server

  - by ysap

  We have a couple of (identical) Ubuntu 11.10 machines, configured with gnome-classic, which we use as remote servers, and let our clients log into personal user accounts we create for them using vnc4server. We configured all the machines in the same way, following a short manual we compiled, describing how to download, install and prepare a few tools and our software. The connection usually works fine, but today I set up a fresh machine, and experienced problems. After installing vnc4server, I ran vncpasswd and copied the following startup file to ~/.vnc/xstartup: #!/bin/sh unset SESSION_MANAGER unset DBUS_SESSION_BUS_ADDRESS gnome-session --session=gnome-classic & [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources xsetroot -solid grey vncconfig -iconic & Then, I started vnc4server and used two viewers (the Ubuntu Remote Desktop Viewer and Windows RealVNC Client) in two other machines, but instead of getting my desktop, I see an empty window with a grey-ish background pattern like this: and the cursor is a bold X. What is wrong with the setup and why don't I get a remote session as expected?

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• ALSA mixer applet?

  - by David Given

  I have recently installed Narwhal. Everything seems to look good so far, but as usual sound via PulseAudio is deeply unsatisfactory; scratchy sound from Skype, choppy sound from command line apps, etc. So I've removed it, and sound now works fine. Unfortunately I now discover that the standard Gnome mixer applet has changed to being PulseAudio-only, and trying to run it just hangs waiting for a PulseAudio connection. Does anyone know of a replacement volume control applet that I could use which manipulates the ALSA mixer directly? I've found xfce4-volumed, which handles the hotkeys very nicely (once I disable the keyboard shortcuts in Gnome), but of course the XFCE4 mixer applet isn't compatible with Gnome so I can't use that; and there appears to be nothing else readily apparent...

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• How to adjust DPI in 14.04

  - by jake

  I asked about fixing DPI in 12.04. The 14.04 release notes list "Support for High-DPI screens and desktop scaling." Post upgrade, it seems that nothing has changed. Similar symptoms from my previous post persist: The 1" square here is closer to 1/2" Despite the line xserver-command=X -dpi 170 in /etc/lightdm/lightdm.conf, xdpyinfo reports 96x96 dpi I did find that I was able to use the "Scale for menu and title bars" slider in System SettingsDisplays to fix title bar text size instead of setting org.gnome.desktop.interface text-scaling-factor as described here. The last post also mentions that in Gnome 3, DPI is hard coded to 96. Is this a limitation in 14.04? (I am somewhat ignorant to the distinction between Gnome and Unity) Can I do anything to properly set my DPI?

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• Why is it taking so long to open the Ubuntu Help Center?

  - by Agmenor

  When I click on the Help Center Icon in the 'System' menu, it takes more than a minute to launch the program. More than a minute, for a text only program seeming like a website! All my other programs work fine, and I saw this problem also on other computers. Is there a reason for this? Will it be fixed? I think it is an important issue for beginners. As a response to Scaine, the result of the command software-center is the following: Traceback (most recent call last): File "/usr/share/software-center/update-software-center-agent", line 72, in <module> db = xapian.WritableDatabase(pathname, xapian.DB_CREATE_OR_OVERWRITE) File "/usr/lib/python2.6/dist-packages/xapian.py", line 3195, in __init__ _xapian.WritableDatabase_swiginit(self,_xapian.new_WritableDatabase(*args)) xapian.DatabaseLockError: Unable to acquire database write lock on /home/agmenor/.cache/software-center/software-center-agent.db.tmp: already locked 2011-01-11 19:57:24,495 - softwarecenter.app - INFO - software-center-agent finished with status 1

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• How can I have only two specific keyboard layouts in my system without 'us'?

  - by ??O?????

  I want only two keyboard layouts in my system: us altgr-intl (USA International (AltGr dead keys) ) and gr (Greece), so this is what I've selected in System ? Preferences ? Keyboard ? Layouts. However, every time I begin a new Gnome session (reboot, logout/login), the us keyboard layout is automatically inserted at the top of the list. I created a small script called fixlang that ensures the desirable result: layouts='[us altgr-intl,gr]' # tab between us and altgr key=/desktop/gnome/peripherals/keyboard/kbd/layouts active_layouts="$(gconftool -g $key)" if [ "$active_layouts" != "$layouts" -o "$1" == -f ] then gconftool -t l --list-type=str -s $key "$layouts" fi which I run on login. However, this is a kludge. How can I ensure that Gnome does not mess with my keyboard layout selection?

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• How can I change my "Desktop bar"?

  - by d_Joke

  The problem: In Gnome 3.4 when I click the main menu, it's white. The text of the menu is also white. Original text: I have a problem. When I installed the new version of Gnome (3.4) the "Desktop bar" (I'm sorry, I don't know what's the real name of that bar, but is the bar on the top on Ubuntu 11.10) every time I click on the username icon, or the battery, etc., the menu comes on gray or white and the letters are white. I know maybe this is a stupid question but it annoys me. Besides, my username doest not appear on the login screen. I tried to reset my settings, I delete gnome, and check the Unsettings and CompizConfig but the problem is still there. Maybe I miss something on the process of looking on any configuration tool but I don't think so... Sorry if the question is something basic or even stupid but I'm new on Ubuntu and I'm experimenting whit it.

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• How do I reset the default icons from the desktop icons?

  - by Jens Reubsaet

  I know this question sounds cryptic, but what I mean is this: I set different icons for the 'home' and mounted volumes on the desktop, but I want to revert that action. How do I do that? I already tried to do it from the icon selection dialog by clicking revert, but no effect. How do I restore this? (the desktop icons are from the default GNOME Icon Theme but I have the Faience icon theme: these do not really match up). Thanks in advance! I'm running Ubuntu-GNOME 13.04 64-bit (GNOME 3.8.2) I set the icons by right clicking, clicking the icon and selecting it by the dialog.

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• Why is 'libgnomevfs' files under /usr/include/gnome-vfs-2.0?

  - by George Edison

  Most applications, including the gnomevfs headers themselves, expect the files to be under /usr/include/libgnomevfs, but Ubuntu has them under /usr/include/gnome-vfs-2.0/libgnomevfs. Why? The package I'm referring to is called libgnomevfs2. Inside /usr/include/gnome-vfs-2.0/libgnomevfs/gnome-vfs.h` we find: #include <libgnomevfs/gnome-vfs-acl.h> #include <libgnomevfs/gnome-vfs-address.h> #include <libgnomevfs/gnome-vfs-async-ops.h> #include <libgnomevfs/gnome-vfs-cancellation.h> ... Meaning that even the headers themselves expect the files to be in that location - and nothing that includes this file will work. Am I missing something, or is this a glitch?

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• Ubuntu One - Files API - Cloud - More detailed info somehwere?

  - by Brian McCavour

  I am just starting on a mobile app for Ubuntu One, and I'm reviewing the info at https://one.ubuntu.com/developer/files/store_files/cloud I find the information a bit lacking though. It's a nice reference, but for someone not familiar with it, I had to goggle search to find out what a "volume" was exactly (its kind of obvious, but never hurts to know the specifics) There's also things like: GET /api/file_storage/v1/volumes Return a JSON list of Volume Representations, one for each volume. A volume is a synced folder, or the Ubuntu One folder, owned by the user. Note that all volume paths begin with ~.: ... but there's no such thing as a JSON "list". Does it mean array ? And other things... So I was wondering if here existed another page with more detailed information. Maybe some sample request / responses or something? I could just write a little proof of concept app to answer some of these questions... but I prefer not to unless I have to. Thanks

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• Problems to boot, Ubuntu entry does not work anymore

  - by user104108

  A few months I decided to install Ubuntu 12.04 on my PC alongside with my Windows 7 partition. In order to do that and avoid any mistake, I followed these steps: http://www.linuxbsdos.com/2012/05/17/how-to-dual-boot-ubuntu-12-04-and-windows-7/2/ Everything was going well until I decided to update to the 12.10 realese. I don't know what happened, but after I updated my Ubuntu, it stoped working, it didn't even launched, when I turned on my pc and choose to run "Ubuntu 12.04" on the Grub Screen, a weird messaged appeared. Well, so I decided to install the Ubuntu 12.10 and forget about the 12.04 partition, no problem. I erased the partitions used for the Ubuntu 12.04 with EaseUS partition Manager. However, when I start my PC, there is still the option of "Ubuntu 12.04" to chose, is that bad? And what about now, can I use the Windows Installer of Ubuntu ( http://www.ubuntu.com/download/help/install-ubuntu-with-windows ) to install the Ubuntu 12.10 ? What should I do to have Ubuntu 12.10 and Windows 7 in dual boot again? Thanks; Thales.

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• Error after updating from Ubuntu 10.04 to Ubuntu 10.10

  - by Emerson Hsieh

  Note: This was posted 6 months ago. Please read my answer below. I updated to 10.10 from 10.04 last week. After rebooting it shows "error "prefix" not found" for half a second and then it's stuck at a flashing line forever!! I installed 10.04 again and I didn't upgrade to 10.10 directly because the flashing line looks creepy and I don't want to see it again. What should I do now?? PS: I want to upgrade to 10.10 I am using wubi I hate that flashing line

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• Dual boot problem with ubuntu 12.04 and Vista

  - by vendella dahlahdoo

  Greetings from New Zealand. I have installed Microsoft Windows Vista and then installed Ubuntu 12.04 on my refurbished Compaq nx8220 laptop. I get the following infamous head hurting prompt continually. error: no such partition. grub rescue> Have tried most of the common recommended solutions. Live-CD then install Boot-Repair through the Terminal didn't work. It repaired all the linux stuff when restoring grub and then can't boot into Windows Vista. When I use Boot-Repair to fix the MBR, then I can't boot into Ubuntu. Tried installing BCD 2.1 in Vista and tried all the options one after another in BCD. Still no Ubuntu when selected through the options menu from BCD on restart/reboot. I have tried the boot repair option on the Ubuntu server CD-ROM, tried installing earlier versions of Ubuntu 11.04, 11.10, and Ubuntu server 11.10 and 12.04. Still the same result. I tried deleting the Ubuntu partitions through Vista a number of times and reinstalling Ubuntu. I have been trying and retrying all the options in Boot-Repair in different combinations for the past week and a half. I have tried at least 10 times installing and reinstalling Ubuntu. I really love Ubuntu and believe I have exhausted most of the recommended solutions and have spent too much time on this. Its driving me nuts!! please can someone help, I have finally given up (sigh). The following are some outputs from Boot-Repair from my last attempts. http://paste.ubuntu.com/1019227 http://paste.ubuntu.com/1019264 I was only allowed to post two links being a newbie. The only thing left for me to do is the flying Samoan dropkick laptop trick. Thanks in advance. Francis.

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• A peculiar issue with nm-applet

  - by montreux

  There is a somewhat strange error that I've noticed with my gnome sessions. It's not a problem that causes a lot of trouble, but at times it becomes annoying. Anyway, here it is: when I fire up gnome-session-fallback (which is the main one I use), the network applet doesn't run with root permission. Here is what it looks like http://i.imgur.com/8kc7Vrd.jpg . On the other hand, here is what the regular gnome session looks like http://i.imgur.com/wfkkE3E.jpg . From the regular session I can easy edit and add networks, but from fallback session I cannot add/edit anything, or turn off/on the wireless or networking. Any ideas?

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• logging with Openbox / Gnome shows empty Desktop

  - by Sandking

  I installed new 12.04 and Openbox. I logged in with GNOME/Openbox and now after system starts I see only Desktop background image and nothing more. When I right click I can do normal GNOME actions like create folder and nothing more really. alt+f2 doesn't start run window though I managed to create a folder and then with Nautilus start terminal but I really don't know what to do next. Two questions: Why doesn't Openbox start properly? How in this situation I can get back to GDM login screen and choose other option to log in?

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• The Perfect Server - Ubuntu Lucid Lynx (Ubuntu 10.04) [ISPConfig 2]

  <b>Howtoforge:</b> "This tutorial shows how to set up an Ubuntu Lucid Lynx (Ubuntu 10.04) server that offers all services needed by ISPs and hosters"

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