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• ssh: connect to host 192.168.1.7 port 22: Connection refused

  - by Rudra

  I get this error when ever I try to connect my desktop with another desktop using SSH, but I'm able to ping the other desktop successfully. ssh: connect to host 192.168.1.7 port 22: Connection refused When I try to restart sshd, it says sshd : unrecognized service I can connect to remote server using SSH but I'm not able to connect within the local network. Please help me in this regards, Thanks in advance.

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• backlight doesn't work on acer 5732z tried everything I can find

  - by Dude Random21

  Ok if you can solve my problem you're really really good. I want to run ubuntu 12.04 on my acer aspire 5732z I know (from research) that these computer's have issues with the backlight on ubuntu. So I tried a couple of solutions: The "sudo lightdm restart" method. I get no change at all. The "sudo setpci -s 00:02.0 F4.B=30" method. This so far has been the most effective, I first tried it in the F1 console right away I get the screen back, problem is going back to the desktop it goes back to being black. So I tried it from a terminal window and it works as well but as soon as I unplug my external monitor the screen turns black again and doesn't come back. If I plug the monitor back in the screen stays black and the only thing I see is the mouse pointer. From here I go back into console (which I am able to see) and reboot from there. The "sudo sed -i 's/GRUB_CMDLINE_LINUX=""/GRUB_CMDLINE_LINUX="acpi_osi=Linux"/g' /etc/default/grub" method. This one I got no instant change and after reboot still no change. I'm open to pretty much any suggestions you may have.

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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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• Alternative to Firefox's Tab Groups feature for Chromium/Chrome

  - by Halkinn

  Firefox keeps crashing the whole time on my Lubuntu 12.04 since version 12, I don't know why, I am running it on a Pentium IV desktop so might be CPU shortage, however I use the same set of extensions and configurations that I have on Windows' Firefox and it rarely crashes, runs smoothly and besides on Windows it can handle much more tabs opened before some freeze actually happens. Chromium is working better so far on Lubuntu, but I really do miss the Tab Groups Firefox feature, which is great to group tabs and organize them, it really is a boost on my productivity. Are you aware of any add-on which is similar for Chrome/Chromium? I've searched around on Chrome's Web Store but no luck at the moment.

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• How do I clear all gnome shell notifications?

  - by user19448

  I use Jupiter as a power manager. Now I get a good number of notifications from it. I do not have problem with the fact that I get all these notifications. I do however, want to be able to clear all gnome shell notifications with a few clicks. Currently, my entire bottom edge of the screen is filled with notifications and I do not wish to clear each item one by one. So my question is, how do I clear these notifications? If this is not possible in the ui, is it possible to write an extension to do it? Where should I suggest this feature to gnome developers? Gnome forums are almost dead now, the administrator has not activated my created account since 5 days!

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• Help me i can't format my usb? i have already tried with mkdosfs and gparted

  - by Mauri Olivares

  I have a MicroSD card in a USB adapter (which plugs into a USB port on my machine, and acts like a USB flash drive). I was using Unetbootin to make this a bootable USB flash drive with Kubuntu. But I needed to cancel while it was working. So I killed the Unetbootin process from the console. Since then, I can't format the MicroSD or delete the folder that Kubuntu made. I have also tried mkdosfs, with no success. I can't mount the drive anymore either? What can I do, to make this drive usable again? Trying to create a new partition table in GParted, as described in Eliah Kagan's answer, does not work. It fails with the error message "imposible crear tabla de particiones" ("unable to create a partition table").

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• How to resolve "Network host is busy; will retry in 30 seconds"?

  - by k0pernikus

  I have added a network printer, a Konica Minolta C253, via cups by its IP (http://10.0.0.42) under the http://localhost:631/ cups webfrontend on an Ubuntu 11.10 client. I used the documented KOC353U.ppd in the process. I was able to print exactly one page. Afterwards, all I get in the printer's status is the message: "Network host '10.0.0.42' is busy; will retry in 30 seconds". What is the problem here and how do I resolve it?

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• DVC101 Video Capture Device on USB hub - Ubuntu Server 12.04

  - by John

  I have a Dell Inspiron 8600 laptop I use as a media server/video capture system. It only has 2 USB ports and I have a total of 3 devices I need to connect. The DVC101 works perfectly while plugged directly into the USB port in back of the laptop. Unfortunately it does not get recognized when plugged into a passive or powered USB hub. Questions: Is there something I am missing on the Ubuntu side? Something I need to do that will allow the device to be recognized through the hub? If not, will the extra USB ports on a dell laptop dock (port replicator) act the same as the aftermarket hubs? I know this one is off topic of Ubuntu but any input appreciated.

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• Library search paths

  - by David Clements

  This question originally started in an apparent problem in Cups calling various back-ends and using non-standard library search paths. If I want to change a library search path for a app running in a terminal I can use LD_LIBRARY_PATH, RPATH, etc., but if I want to change a library path for a Cups back end, I subsequently resolved the Cups issue, but I don't see any mechanism to change the search path whare an app is not running in terminal. For example Cups calls backendA and backendB to print on 2 printers, BackendA uses libxxx.1.15 and BackendB needs libxxx.1.05, is there any way to change the library search path for backendB (only) without recompiling backendB, (I may not have the source)? Any ideas?

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• How can I manage multiple administrators with juju?

  - by Jorge Castro

  I manage some deployments with juju. However I am not an island, I have coworkers who also want to manage shared environments. I know I can use the following stanza in ~/.juju/environments.yaml to give people access to my juju environment: authorized-keys: [and then put their ssh IDs in here] What other best practices are available to manage multiple environments with multiple system administrators?

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• Ubuntu 11.10 momentarily freezes every couple minutes

  - by Jeff Welling

  I'm working on an Acer Aspire One D257 running Ubuntu 11.10, and every few minutes the laptop freezes up for a second or two, before becoming responsive again. This doesn't really present a huge problem, but when I'm trying to code all of a sudden vim stops responding for a couple seconds while I'm trying to modify my code, it's increasingly frustrating. The odd part is, if I play a movie in VLC at the same time, when vim pauses the video keeps playing just fine (VLC's priority is not modified). I'm wondering if anyone knows why this may be happening, or in lieu of that, how I might be able to track down the source of my frustrating pauses. Normally I would try using top, but the pauses are shorter than 2 seconds so nothing unusual shows up in top as consuming the CPU. Does anyone know how to troubleshoot intermittent repeating 1 second long pauses in vim?

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• How to fix "error: unknown file system" on all available partitions

  - by Jonathan

  I've had a running problem with removing Linux from my Windows 7 laptop. Initially, it was installed as a dual-boot, and worked well. To remove, I deleted the partitions on my laptop. This removed grub, and I was left with needing to enter: set root=... set prefix=... insmod normal normal each restart. I didn't restore the Windows boot-loader and have since re-partitioned my drive. Now, upon reaching the command prompt screen, an ls query showshd0, with three partitions, but none of them have a recognizable boot-loader as each returns with error: unknown file system. Booting from a Windows 7 rescue disk doesn't seem to work, as it sends me to the same command prompt terminal. All I'm looking to do is restore the boot-loader, either grub or Windows 7. Any help would be appreciated. Thanks in advance.

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• Set default app for opening an extension [closed]

  - by Primož Kralj

  I am using Linux Mint 13 with Cinnamon. I have a problem setting an application to open a file with some extension when the application is actually only extracted, not really installed using apt-ger or .deb file. For example - Blender. You can download a .tar.gz from official site which you then extract and you can just run the app. However, it isn't listed in the default apps list (Right Clickon file - Open with other application - Show all installed apps). So now I have to always open the application first and open the file from there. How can I solve this?

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• Places Folders Open in Archive Manager

  - by PansophySR

  Am relatively new to Ubuntu. Currently running 10.10, which was an upgrade from 10.4, which was an upgrade from 9.10, which was a fresh install. Have never compressed anything in Ubuntu, but because I wanted to use the contents of a large folder on a Windows machine, I installed 7zip. Using Places, I navigated to the folder I wanted to compress, right-clicked, chose Compress, selected 7-zip and started the compression. This took many minutes to complete (the final 7z file is over 2.2 GB), but when I copied it to the windows machine, 7-zip handles it fine. However, now when I open Places, the Home Folder, User folder, Documents, Music, Pictures, Videos and Downloads all open the Archive Manager which gives an error message that it "Could not create the archive" because the "Archive type not supported." If I open Places/Computer choose the usr folder from places on the left and right-click/Properties on any of the folders, Music for instance, there is no place to change the "open with." Anyone know how to get this working again.

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• Text box select issue

  - by Kent Boogaart

  I have this issue where the entire text in text boxes is selected whilst I'm typing in it. For example, in FireFox search box I'd try to type "foo" but end up with "o" because I managed to type "fo" before everything was selected, and then typed "o" which replaced the "fo". When it happens, it is incessant - not just a one-off. But it doesn't happen all the time, and I haven't managed to figure out what causes it to start and stop. Is this a known problem with an easy solution? EDIT: this has nothing to do with touchpad. I get this occasionally even on a machine without one. I can usually rectify the issue just be alt-tabbing about a few times.

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• Installing Ubuntu by writing on the Hard Drive

  - by Alexandros Marinos

  I have a laptop whose CD drive is not operational and is too old to boot from a flash stick. I have bought a new hard drive for it for which I have an enclosure. Is there a way to configure the disk as an external to my current ubuntu setup, copy some form of ubuntu on the hard drive, place the HD in the old laptop, and have ubuntu install ubuntu from there? Effectively what I am asking about is some sort of live cd that installs on itself (since the HD is writeable).

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• How to restore the shortcut for the "fancy window switch?

  - by maaartinus

  Pressing the "windows key" and tab (Mod4+Tab) used to work similar to pressing Alt+Tab (which switches windows just like M$), but it showed a much better preview. Somehow I lost the shortcut and can't find it anymore. I've gone through the chaos in "System - Preferences - Keyboard Shortcuts" several times and the only thing I can see there is "Move between windows, using a popup window", whatever it means. I prefer the "fancier" switcher, how can I restore it?

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• install Ubuntu and remove Windows 7

  - by dani

  I'm using Windows 7 on my laptop (2GB RAM, 250 GB HDD). I want to install Ubuntu and remove Windows 7. I have Partitioned my laptop into 2 partitions: , C Drive - 105 GB and D Drive - 145 GB. I want to install Ubuntu on C drive all my data in D drive, no backup I have already selected the "Try something else option " /dev/sdb /dev/sdb1 ntfs 104855 MB unknown C drive /dev/sdb5 ntfs 145192 MB unknown D drive I need help using the "Try Something Else" Option My course of action: laptop power on bootubuntu nextsomething elsepartition.

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• Can't mount external hard drive

  - by tezza

  i have a problem accessing the data on my external hard drive. I recently did a fresh install but mistakenly left my external hard drive plugged in. When I tried to access the data on the external HDD, it says "no files" but recognizes that there is 290 GiB of data on it. The HDD is 350GB big. I checked the drive with Disk Utility and it showed that the hard drive had a bootable flag. So, in the edit partition, I unchecked this bootablity. Now it won't mount in Ubuntu and now my XP can't recognize it at all, whereas I could access the data on the XP machine before. In disk utility, it doesn't give me the option to check the bootable box in again and I can't access the data on XP either. Any ideas on how to fix it?

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• Acronis restore Wubi Ubuntu 12.04 parition with error

  - by user287082

  I'm on Win 8.1, then I download ubuntu-12.04.4-desktop-amd64.iso I mount the iso and copy wubi.exe to the same folder with above iso I run wubi.exe and install to another partition Everything works fine, then I make a backup with Acronis True Image 2013 Today, I use Acronis to restore that backup, after that I boot into Ubuntu and see this error http://i291.photobucket.com/albums/ll293/sniper_awm/2014-05-31_161817_zpsfe7a21c8.png And can see the folder structure of Wubi partition from Win 8.1, I copied root.disk to another place How can I fix this? (Dell 2420)

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• How do I remove my Windows 7 setup from a Windows/Ubuntu dual-boot?

  - by Tom

  Previously my OS was Window 7 and some day it began to show problems with booting and finally it didn't boot at all. I tried to repair it but it didn't get repaired. Then I installed Ubuntu 14.04 LTS alongside Windows and am impressed much by Ubuntu. So I want to remove all my Windows files. I searched Google to know how to do it and I found OS-Uninstaller. I have some doubts before proceeding with OS-Uninstaller - I need to keep my photos, songs, movies and personal files in my system even if Windows is removed. Normally Windows files are installed in the C Drive. My personal files are not in the C Drive. So will removing Windows files affect my personal files ? Did the OS-Uninstaller affect Ubuntu anyway ? Please note that I want to remove only the Windows installation files(the files added to my system by Windows during its installation). I don't want to change the NTFS partition to any other format since there is a probability that I will install newer version of Windows later.

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• 14.04 default locales

  - by Seán Ó Séaghdha

  After a new install of 14.04 I have quite a few extra locales/languages. Is this normal? I installed using English (GB) I think since en_AU isn't an option. At some point apt offered a list of unused files which I removed. Now when I open Language Support it warns me that "Language support is not installed completely" and offers to reinstall this list... kde-l10n-zhcn thunderbird-locale-en-gb thunderbird-locale-es libreoffice-l10n-en-gb libreoffice-help-es libreoffice-help-en-gb wspanish thunderbird-locale-zh-cn myspell-es ibus-sunpinyin mythes-en-au kde-l10n-es libreoffice-l10n-zh-cn fonts-arphic-uming ibus-table-wubi thunderbird-locale-es-es thunderbird-locale-zh-hans libreoffice-l10n-en-za thunderbird-locale-es-ar hunspell-en-ca libreoffice-l10n-es libreoffice-help-zh-cn kde-l10n-engb fonts-arphic-ukai So are Spanish and Chinese installed by default in all installations now? Why do I need Canadian English spellchecking installed?

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• Ubuntu ONE (Windows BETA) locks up - What to do?

  - by Zusch

  OS: Windows XP SP3 Hardware: Dell Precision M4400 (Laptop) CPU: Core2Duo T9600 Mem: 4 GB Installer- setup, first start and account- setup of UbuntuONE Windows client passed with no problems. After restart of UbuntuONE, the CPU- usage shows 50% (100% core usage). Exit- command (from context-menu) hides the trayicon, but the program is still working excessive in background (50% cpu- / 50 MB memory- usage), until UbuntuOneClient.exe is killed by the taskmanager. What's going on ?

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• How can I change the "timeout" duration for Nautilus "find the filename as you type" feature?

  - by fred.bear

  I often get stalled by the long timeout while typeing the first few letters of a file name in Nautilus... The current timeout seems to be 5 seconds. I'd prefer 1 second ...(as per item 2 on this page about Response Times) I don't use the mouse much, which means I either wait, or press Escape, when I don't find the file... I realize that this is a feature to some, but I'd rather not wait. Is there any way to change this timeout behaviour?

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• Ubuntu Workstation

  - by John Smith

  I bought a dell inspiron n5110 hoping that i'll be able to use it fine with Linux; however i couldn't install the video card drivers and in 8 months the motherboard burned because the power management wasn't right and it was overheating. I want to buy a workstation pc that works with ubuntu. Does anyone have any suggestions? I'd like to have the videocard and all other hardware to be used properly Thank you

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