Ceci est une ancienne révision du document !
Q I accidentally deleted the indicator-applet when trying to remove another applet in the taskbar. When logging in as another user everything is as it should be. What do I have to do to make this applet re-appear on my taskbar?
A (Thanks to ibjsb4 in the Ubuntu Forums) Alt-right-click, Add to panel, choose indicator applet.
Q I just started using Ubuntu, I want to install Eclipse CDT.
A Open Software Centre, search for Eclipse CDT, click on Install. It's pretty different from what you are used to.
Q I am using the Gnome 3 desktop on Ubuntu 14.04. I use two monitors. I can reset them to the correct positions using nvidia xserver or the display setting, but they stay the right way round only until the next reboot.
A (Thanks to bizhat in the Ubuntu Forums) When Nvidia xserver gives the option to save the changes, save them in xorg.conf in folder /etc/X11
Q Is there a software solution for updating a Linux server with no internet?
A You can use apt-offline.
Q I have installed the drivers for [some program] in WINE, but it doesn't work.
A (Thanks to Vladlenin500 in the Ubuntu Forums) No, certainly not. WINE runs SOME Windows apps. It doesn't (it can't) work with drivers.
Q I accidentally sent a print job to a printer I no longer own. Now I get a message popping up, saying there is a problem. How can I make it stop?
A You need to clear the print queue. To see what is in the queue, use the command: lpq
To clear the queue, use the command: cancel -a
Q How can I have a few confidential files stored in an encrypted folder?
A Use encfs, with its front-end program called Cryptkeeper. In the Ubuntu Forums there is a tutorial created in 2006 which is still relevant today. (Google: encfs ubuntuforums) There are also online tutorials for Cryptkeeper, which shows up as an icon on the taskbar.
Top questions at Askubuntu
* Find out the application under the mouse http://goo.gl/HPrtdZ
* flashplayer not working in Chromium http://goo.gl/PQpfD4
* AVG antivirus not working http://goo.gl/hs0LPz
* HDMI audio not working on TV http://goo.gl/TfMCzh
* No GRUB Screen or recovery mode on Boot after 12.04 Upgrade http://goo.gl/PlRHOy
* Can I see in a log file all GUI based tasks in its alternative command-line format? http://goo.gl/gxkh5k
* Problem accessing Windows Share from Ubuntu using Samba http://goo.gl/KNWwt6
* An Ubuntu command bricked my system? http://goo.gl/93aSrk
* Is it okay to use symbolic links in my web server? http://goo.gl/VXbXBg
Tips and Techniques
Like a fine wine, it gets better with age.
A five-year-old Acer Aspire One netbook recently fell into my lap. It had Windows XP installed, which is not acceptable in my home or office, so I decided to give Xubuntu 14.04 a spin.
The specs for this little computer are not impressive. The 8.5-inch (diagonal) screen resolution is 1024 by 600, roughly one-quarter of the size and resolution of my Dell Ultrasharp monitor. The keyboard is shrunken by 10%, and some of the keys are in unusual locations. The CPU is a single-core, 32-bit Atom N270 running at a maximum of 1.6 GHz. The machine has a gig of memory and a 160 GB hard drive. There are three USB 2.0 ports, an Ethernet port, VGA and audio ports, Wi-Fi and a low-resolution webcam.
On the positive side, the five-year-old battery will run the computer for over two hours, and it appears to be quite physically robust. It's also small and light, compared to a typical laptop.
I remember browsing the forums when this computer was new, and there were lots of people asking, “how do I get such-and-such working.” Installing Xubuntu was slow, but it went very smoothly. When I booted the installed system, everything just worked!
There was one puzzle for me: the installed system knew about a printer which was not connected to any computer at the time, nor was it plugged in. Huh?
Xubuntu doesn't include a webcam program, but guvcview installed easily and just worked.
I installed lm-sensors, hddtemp and conky. One benefit of the low-powered CPU: it never gets very hot. I was very surprised by how little memory is used when the system boots up.
The computer plays youtube videos just fine, although I'm sure it's dropping lots of frames.
After installing Samba, I could access shared folders on the network, and eventually set up a shared folder on the netbook. Under Xubuntu, it was no easier than setting up a shared folder in Ubuntu Server, with no GUI. (See last month's Q&A).
I installed x11vnc so I could control the computer remotely, using KRDC in Linux, or RealVNC in Windows. That meant I could use the machine as a remote camera, as well as a small file server.
The small screen and slow CPU make this far from my favorite computer. However, free Wi-Fi is available everywhere these days, and the portability makes this a viable option for when I'm out and about.