Ceci est une ancienne révision du document !
Q Which VPN do you recommend for 16.04 LTS when I'm connected to an open WiFi hotspot?
A Actually, I don't recommend a VPN at all. If you have a computer at home when you are on the road, Teamviewer is my suggestion. Easy to set up, reliable, secure, free, cross-platform, what's not to like? OK, it's proprietary.
Q I have multiple ssh servers within my home network. Is there a way to specify which one of the many ssh servers from my single IP that I want to access?
A (Thanks to efflandt in the Ubuntu Forums) You would need to configure each ssh server, except one, to some port other than port 22 and specify the port when connecting (or in ~/.ssh/config of client computer) and in port forwarding on your router. For example, Linux based ip-cop uses port 222 for its sshd, but you can configure sshd for most any port not being used.
Q I have a large database of text files. What search engine do you recommend?
A (Thanks to TheFu in the Ubuntu Forums) Try recoll.
Q How can I disable the touchpad?
A (Thanks to Bucky Ball in the Ubuntu Forums) Try Settings, Mouse and Touchpad, and disable the touchpad.
Q My computer has an Intel Pentium J2900 processor, and it completely locks up from time to time. How can I fix this?
A That is one of many “Bay Trail” processors. For the full list: http://ark.intel.com/products/codename/55844/Bay-Trail#@All
(Thanks to QLee in the Ubuntu Forums) The “Bay Trail” processors and motherboards that have them embedded at the present time often need to disable some of the power saving features in order to not have those random freezes. (The kernel developers are working on the problem.) Some BIOSes have a setting where you can disable the cstates and you could do it there if your MB will allow it. Remember what you have done so you can remove it once they deal with the problem.
Otherwise, you can change a GRUB parameter. In the file /etc/default/grub change the line
GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash”
to
GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash intel_idle.max_cstate=1”
Then:
sudo update-grub
Top questions at Askubuntu
If you are nervous about clicking on a short goo.gl URL, you can get information about it quite easily. Copy the URL, paste it into your browser's address bar, and add a plus-sign. Now goo.gl will tell you where it goes, as well as statistics about its use. (Thanks to askleo.com for the tip.)
* I forgot my username, how do I get it back? https://goo.gl/ftVTxg
* What are possible uses of the exec command? https://goo.gl/YYV4Qn
* Battery Charged at 97% https://goo.gl/4n86Tk
* chown: invalid option – 'i' Try 'chown –help' for more information https://goo.gl/ZbVKyV
* SSH to home computers https://goo.gl/LIHUJr
* New Android Studio IDE not supported in Linux? https://goo.gl/CBBLqK
* Can I boot a Live USB fully to RAM, allowing me to remove the disk? https://goo.gl/zPi2a4
* Is 'apt-get' deprecated? https://goo.gl/2hfrwQ
* How to prevent a new user from doing anything dangerous? https://goo.gl/KZRCOr
Tips and Techniques
Sometimes it's not Linux
One of the simple games I enjoy is Freecell, but recently it became difficult to play.
When I tried to drag a card, it acted like I was going click, click, click, click at high speed, and cards were flying everywhere. As it got worse, I said to myself, “this is a hardware problem.”
Fortunately, I have a good supply of spare mice, keyboards, even webcams. I swapped the mouse, and I could drag a card the way I wanted to.
Then I got a message that I was offline. My standard solution is to reboot, but that didn't get me online. I aimed a flashlight at the Medusa's nest of cables behind my monitor, and learned that I had inadvertently unplugged my Ethernet cable. As soon as I plugged it back in, I was online.
So, two problems, two problems solved – and neither of them were caused by Linux.