Ceci est une ancienne révision du document !
Welcome back to another edition of Questions and Answers! In this section, we will endeavour to answer your Ubuntu questions. Be sure to add details of the version of your operating system and your hardware. I will try to remove any personally identifiable strings from questions , but it is best not to include things like serial numbers, UUID’s or IP addresses. In days gone by, I used to be a Technical manager at an OEM. We supplied not only Computers and computer equipment, but also TVs. A TV came back from a client under warranty, and I had one of my repair technicians open it. However, before opening it, it had that roach faeces smell, so we all gathered around the TV with bug-spray in hand. The technician opened the lid slightly and they (roaches) started scattering and we started spraying. We immediately closed the TV, wrapped it in plastic and I had to tell the customer that warranty was void. As per our warranty statement. The customer was a furniture store, so I had to call the end-user. However, the end-user exploded with: “Are you saying my house is dirty!!??” Part of me wanted to say “yes”, but I could not say that to a customer. We returned the unit promptly to avoid infesting our workshop. Electronics that are plugged in create heat. This attracts things like roaches. When these bugs excrete all over your PCBs, it eats into some softer parts, until one of these bugs closes a circuit and pops your appliance. Prevention is better than cure. When you go on holiday, turn off your electronics at the plug and save a poor technician.
Bienvenue dans une nouvelle édition de Questions et réponses ! Dans cette rubrique, nous nous efforcerons de répondre à vos questions sur Ubuntu. Assurez-vous de rajouter des détails de votre système d’exploitation et votre matériel. J’essaierai d’enlever toute informations qui vous identifieraient personnellement, mais il vaut mieux ne pas inclure des choses comme des numéros de série, des UUID ou des adresses IP.
Jadis, j’étais le responsible technique chez un OEM (Original Equipment Manufacturer, Fabricant d’équipement d’origine. Outre les ordinateurs et des équipements informatiques, on fournissait aussi des téléviseurs. Un téléviseurs sous garanti est revenu d’un client et je l’ai fait ouvrir par l’un de mes réparateurs. Cependant, avant de l’ouvrir, on s’est rassemblait autour prêts à vaporiser de l’insecticide, car il puait les crottes de cafard. Le réparateur a légèrement ouvert le couvercle et les cafards ont commencé à s’éparpiller pendant que nous, nous commencions à vaporiser. Nous avons fermé le téléviseur tout de suite et l’avons emballé dans du plastique. J’ai ensuite dû dire au client que, selon les termes de la garantie, elle ne fonctionnerait pas. Le client était un magasin de meubles, et j’ai donc dû appeler l’utilisateur final. Cependant, l’utilisateur final a explosé en disant : « Vous voulez dire que ma maison est sale !!?? » Une partie de moi avait très envie de dire «oui », mais c’était impossible de le dire à un client. Nous avons rendu l’unité rapidement pour éviter l’infestation de notre atelier. Les éléments électroniques qui sont branchés génèrent de la chaleur et cela attire des trucs comme des cafards. Quand ces insectes défèquent partout sur vous PCB (cartes de circuit imprimé), ils mangent un peu des parties les plus molles, jusqu’à ce que l’un des insectes ferme un circuit et détruit votre appareil. Le meilleur remède, c’est la prévention. Quand vous partez en vacances, débranchez vos éléments électroniques et épargner un pauvre technicien.
Q: I installed a minimal install of lubuntu, with thunderbird for email. it is a brand-new installation, and my inbox looks like this: Screenshot from 2019-01-02 09-07-38.png trucks, bombs, plants, etc. I have updated and restarted, but it is still there. It seems that my inbox is corrupted? How do I fix it? A: The minimal install of Lubuntu needs a font to fix that. Just type: sudo apt-get install fonts-symbola Reboot and you should be good. If you still have issues, the other missing one is noto-emoji. Look here: https://support.mozilla.org/en-US/questions/1178430 Q: How can I sandbox my applications, specially my browser (Firefox) in Ubuntu? It’s not that I am paranoid, I used Sandboxie in windows 7 and wanted something similar for Ubuntu. A: Your Linux counterpart is Firejail. Here are the instructions: https://www.tecmint.com/firejail-run-untrusted-applications-in-linux/
Q : J'ai installé Lubuntu minimal avec Thunderbird pour les mails. Il s'agit d'une toute nouvelle installation et ma Boîte de réception ressemble à ceci : Screenshot from 2019-01-02 09-07-38.png avec des camions, des bombes, des plantes, etc. J'ai fait une mise à jour, puis j'ai redémarré, mais c'est toujours comme ça. Il me semble que ma Boîte de réception soit corrompue. Comment la réparer ?
R : L'installation minimale de Lubuntu a besoin d'une police pour que ce soit réparé. Il suffit de taper :
sudo apt-get install fonts-symbola
Redémarrez et ça devrait être bon. Si vous avez encore des problèmes, l'autre police manquante est noto-emoji. Regardez ici : https://support.mozilla.org/en-US/questions/1178430
Q : Comment mettre mes applications en bac à sable, surtout le navigateur (Firefox) sous Ubuntu ? Ce n'est pas que je sois paranoïaque, j'ai utilisé Sandboxie sous Windows 7 et voulais quelque chose de similaire pour Ubuntu.
R : L'équivalent sous Linux est Firejail. Voici les instructions : https://www.tecmint.com/firejail-run-untrusted-applications-in-linux/
Q: I have heard about Rainloop - https://www.rainloop.net/ as an alternative to Geary. The screenshots look well wicked and I would like to get it. Can you tell me more?
A: I have not used it before, but what I understand from the web page is that it is some sort of caching server you can set up to pick up your email from your email provider, that in turn offers you web access to your email. It is not just an IMAP client like Geary. The install (https://www.youtube.com/watch?v=ffMJVjBnZso) seems to need Apache and Mariadb. That said, I see Nextcloud also offers it as an app: https://apps.nextcloud.com/apps/rainloop. More I cannot tell you that you cannot read for yourself.
Q: Linux newbie here. I can’t seem to get wifi signal on my PC. My wireless card is a D-link make. I have read the documentation that comes with the card, but it does not really tell me anything. Wireless is working, as my phone picks up the signal in my room. The Router is a Netgear in the roof. My Ubuntu is 18.04.01. toute nouvelle
A: I have a suspicion that your card is somehow off, as the D-link cards do support Linux. You need to open a terminal with CTRL+ALT+T , then type: rfkill list all - Then, under the wireless adapter, look to see if ‘soft blocked’ or ‘hard blocked’ says ‘yes’. If this is the case, you need to turn the card on. The other option is that the WiFi card is not seated properly in the slot. Turn off the PC, remove the WiFi card and insert it into another slot. (Slots can also become damaged, though very rarely)
Q: Hallo, I have a problem and tried to google it but can’t find a answer. I use Ubuntu 18.04. I went to the FreeCad website and installed it with the Terminal as shown. I opened ‘show applications’ but there is no icon for FreeCad. I then installed FreeCad via Ubuntu Software center. In ‘Show applications’ there is still no icon for FreeCad. On the web it said to type ‘FreeCad’ in the terminal to run it – but nothing. Please can you help
A: Ah, the broken software centre. Freecad indeed does not show up in the installed section of the software centre. Installation is as simple: ‘sudo apt install freecad’, even if it does not show up in software centre. I tested the installation on Ubuntu Budgie, and it installed with an icon in my menu, as well as running from the command-line, without issue. You can look at software boutique: https://snapcraft.io/software-boutique, or you can install the synaptic package manager and manage the install / uninstall from there. You can also look at the freecad-daily: https://itsfoss.com/cad-software-linux/
Addendum:
I found a long way around to run FreeCad.
I open Ubuntu Settings. I click on All. Then type in FreeCad. It then Shows the FreeCad icon and says Installed. I click on this and get 3 options and click on launch. The program then loads and runs. If I click on installed (instead of All), there is no FreeCad in the list of installed programs.
Pieter
Q: This is my error <error.gif> Something went wrong during the update. My dmesg output is filled with “ i2c_hid i2c-ELAN501:01: i2c_hid_get_input incomplete report (14/65535)”. I am at a loss as to what is going on. Could you help me?
A: You have provided me with too little information, but let’s see if we can get you on the right track. “I2C” is the protocol (if you will) that is used to connect to simple devices. ELAN is your touchpad (usually) which means the kernel is not talking to your touchpad. However, this is only an indication that something else went wrong with the kernel update. My suggestion is to roll back to the previous kernel. Wait a while and see; there may be an issue with that kernel, or one of your kernel modules. You do not always need the latest bleeding-edge kernel, sometimes it is okay to wait.
Q: Can I add rpm-fusion, then use alien to get packages? It seems some things are better maintained there.
A: Oh wow. I suppose you could, but then you would just be setting yourself up for so much headache you would make 7 billion people cry. Though I do not like PPAs, you could get the same functionality there with updates. You could even build the software that you are looking for and maybe even have a later version than they have at ‘rpm-fusion’. Packages you used alien on, do not receive updates and fixes, and are not guaranteed to work.
Q: How come Ubuntu Studio is not supported for so long as Ubuntu Mate?
A: As per one of the developers, they do not have the manpower at the moment, but things are looking up, a new developer has joined. Don’t disregard it because it says 9 months support.
Q: Hi. How do I get Thunderbird to work offline like Outlook does with the click of a button. How do I get a calendar again?
A: With Thunderbird, it is unfortunately not a button. You can find it by clicking the hamburger menu button (three horizontal stripes), then ‘file>’, then ‘offline>’, then tick ‘work offline’. You can customize your menus if you want to also. The calendar option is via ‘add-ons>’ and clicking extensions on the left. When it is minimized, you should see an icon in the top right with ‘17’ in it. Clicking that will show the side panel, which you can double click.
Q: I had my touchpad disabled when I installed ubuntu. I hate it when my palms touch the pad when typing and I lose work, so I use a mouse. I left my mouse at home and wanted to enable the touchpad. It does not work. What can I do to fix it? I have Ubuntu 18.4.
A: There are different types of touchpads (makes), but the most common one is synaptics. Since you did not provide enough information, I am going to make a guess and help you with a synaptics device. Type the following, then reboot and test. Make sure the touchpad is enabled: sudo apt-get install xserver-xorg-input-synaptics - If this does not work, please send me the output of: xinput list
Q: Can you help me install wine on a minimal install of Ubuntu please? I tried from the terminal with apt install wine. My error is: E: Package 'wine' has no installation candidate.
A: Next time you type apt install wine, press the tab key twice, the auto completion works there too. The full command is: sudo apt install wine-stable - there are other versions too, but I suspect you would need the stable version.
Q: My SMB shares to my Windows7 PC and has stopped working. Even though I have no password set, I get an authentication error when trying to connect. This arrangement has been working for years and I am not sure if the last update broke it. How do I make it work again? My old Windows7 PC is just storage. My Ubuntu version is 16.04, updated.
A: The problem is an update, but not on Ubuntu side. It is a Windows 7 update that broke it. Currently (at the time of writing) there is no fix as even a restore to December 2018 does not fix it. Some have reported success with creating another account on the Windows 7 PCs, and creating new share,s and some with uninstalling the updates and using password shares. Keep your eye on Reddit for a fix. You can also try enabling the administrator account on windows 7, give it a password, and connect to your shares with the administrator account. Rolling back to December 2018 and Admin account worked for me with printers scanning to shares. Some have reported success by using IP addresses instead of names.
Q: My themes from gnome-look.org will not install. I follow the instructions to the letter, but I can’t get it to work. Does it have something to do with the index.theme file? Even Using Gnome-tweak tools does not work for me. The Icons I copy to the folder work. It’s the GTK stuff I have an issue with.
A: Firstly, there is a difference between the different versions of GTK themes, not to mention the rest. If the theme does not work, it is probably the wrong kind. Gnome shell is newer and is not always compatible with the older themes. The differences are laid out visually on this site: https://www.makeuseof.com/tag/install-change-ubuntu-theme/