gpg -e -a -r <receiver@email.address> [-r <receiver2@email.address>]
<type message>
<ctrl d>
Now copy the PGP message to your mail client and send that mail.
-r
flag per receiver addressgpg -ear reci@pie.nt
gpg -d
<paste encrypted message>
<ctrl d>
gpg --keyserver keyserver.ubuntu.com --search-keys <user@domain.com>
<number of the search result that should be imported>
Also see [Using GPG/PG...
If you're running Ubuntu Mate and your Zoom suddenly has huge buttons, it might assume you're using a very High DPI display. While this is usually a good idea, the heuristic determining whether to enable this HiDPI mode or not does not work perfectly with Ubuntu Mate and multiple displays.
Unfortunately, this setting is not exposed in the GUI, you'll have to change the config file.
First, make sure zoom is closed completely, i.e. there should not be a zoom icon in the panel next to the clock.
Open `~/.conf...
Since Zoom does some post-processing of your audio input, it's best to hear yourself in a Zoom recording:
Right-Click on the speaker icon in your tray, then go to Sound Preferences => Input.
When sharing a screen over Zoom in Ubuntu MATE, you might notice a dark gray shade.
This shade is caused by the Compton compositing manager, which you probably enabled in MATE Tweak / Windows / Window manager. Zoom draws a green rectangle around your screen to indicate what is being shared, and Compton draws a "shadow" into this rectangle.
If this happens to you during a meeting, you can quickly "fix" it by stopping Compton from the console:
killall compton
The shado...
Your GPG client notified you that your keypair will soon expire, or has already expired. Here is what to do.
If you're using the built-in GPG encryption in Thunderbird 78+, you can extend your key from the Thunderbird key manager.
After extending the expiry date of a GPG key you might have to copy your key to another machine to use the same key there. Here is how:
Identify your private key:
gpg --list-secret-keys user@example.com
Example output:
pub 4096R/ABC12345 2020-01-01 [expires: 2025-12-31]
uid Your Name <user@example.com>
sub 4096R/DEF67890 2020-01-01 [expires: 2025-12-31]
Remember the ID of your key (second column, after the slash, e.g. "ABC12345"). If you have a "sub" entry, you can ignore it.
2....
Mir ist aufgefallen, dass nach dem Aussetzen meines Notebooks das Scrollen auf dem Touchpad (am Rand oder mit zwei Fingern) nicht mehr funktioniert. Dies scheint ein bekannter Bug zu sein
Mein setup ist:
Der verlinkte Kommentar von oben hat mir dabei geholfen, das Problem zu lösen:
Du musst die Dabei /etc/default/grub
(sudo!) bearbeiten und diese Zeile ändern:
# von:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
# zu:
G...
Wenn eine eingehende E-Mail eine einzelne Anlage mit dem Namen winmail.dat
enthält, hat ein Windows-Benutzer seinen Outlook-Client falsch konfiguriert. Wahrscheinlich versucht er, dir einen Anhang oder eine Kalendereinladung zu senden, die nun in einem proprietary Format in den winmail.dat
-Anhang komprimiert werden. Outlook hängt auch eine winmail.dat
an, wenn ein solcher Benutzer eine formatierte E-Mail geschrieben hat.
Wenn möglich, bitte de...
Unter bestimmten Umständen ist es möglich, dass Ubuntu das Standardmikrofon selbständig umschaltet, z.B. wenn du ein Headset verwendest, das über einen 3,5mm-Stecker angeschlossen ist, und deine USB-Webcam ebenfalls ein Mikrofon hat, könnte Ubuntu das Standardmikrofon auf das USB-Mikrofon der Webcam setzen.
Wenn du das nicht willst, ist es erstaunlich schwer, Ubuntu davon abzubringen. Hier ist wie.
Alternativ kannst du auch alle Geräte außer dem gewünschten deaktivieren. Beachte, dass dies nicht...
Zoom is a video conference tool that has great screen-sharing support on Linux. [1]
However, Zoom's screen sharing causes immense CPU load, slowing down other applications, and on laptops the CPU fan going at full speed will drive you insane.
To fix that, open Zoom's settings dialog (cog icon in the top right), and in the "General" section set the "Limit your screen share to X frames per second" option.
I suggest you set to 4 FPS. This may sound very low but is actually enough for pair programming or demoing something.
...
| alt + q | End Meeting ("quit") |
| alt + a | Toggle Mute ("audio") |
| alt + s | Share Screen ("share") |
| alt + i | Open invite menu ("invite") |
For more shortcuts see the zoom help.
This is because of how Sipgate sends the incoming caller ID. As it is intended, it shows both who the call is for (in case you have multiple numbers configured on your phone) and who it's from, after a line break. Neither SNOM phones nor linphone, ekiga, etc handle this perfectly. You may either fix this only on your SNOM phone or on all connected clients:
Ubuntu Mate 18.04 has a bug in which suspending your computer does not lock your screen in every case. If closing your laptop's lid or clicking the suspend menu option in your top right menu already locks the screen, you're not affected and don't need to do anything.
To make sure screen lock is engaged when you suspend your computer, please create the following file, as root
:
/etc/systemd/system/lock.service
[Unit]
Description="Make extra sure to lock the screen when suspending"
[Service]
Type=oneshot
User=root
...
Wenn du mit einem Projektor präsentierst, möchtest du wahrscheinlich deinen Bildschirm spiegeln. Auf diese Weise zeigen der Laptop und der Projektor das gleiche Bild.
Dein Linux-Anzeigedialog enthält normalerweise ein Kontrollkästchen zum Spiegeln von Bildschirmen. Wenn du dieses Kontrollkästchen aktivierst, kann sich die Anzahl der verfügbaren Auflösungen jedoch drastisch verringern. Dies wird durch inkompatible Listen der verfügbaren Auflösungen zwischen den beiden Bildschirmen verursacht. Oft hast du dann eine sehr niedrige gemeinsame Au...
With the latest hardware on both Laptops and Desktop computers, it might be necessary to install more recent hardware drivers, i.e. Linux kernels and xorg versions.
While it's possible to use backports from various sources on the internet, it's neither very safe nor tested very well. However, there is official support for the Hardware Enablement Stack in Ubuntu LTS-Versions, i.e. 16.04 and 18.04.
If your system is working fine without the HWE packages installed, it's best to just leave it alone. If you're sure issues on your s...
Dell U2410 screens have a stupid firmware bug where when you manually switch off the monitor and then your computer, the screen will no longer power on when the computer is restarted. In such a case the power button is dead and no longer reacts to input.
In order to fix this:
Seriously.
The English speaking world does not agree on how to write dates. For the 21st of June, Americans use "06/21/2018", while the British use "21/06/2018".
To avoid confusion, prefer to write either "June 21, 2018" (which is American English), or "21 June 2018" (which is British), but which cannot be misinterpreted.
The default settings used by the wizard did not work for me. I got authentication errors all the time.
This is what worked for me:
Account name: Sipgate.de
SIP-IP: Your Sipgate ID (see https://secure.live.sipgate.de/settings/phone/, click on phone and select "Show SIP credentials")
SIP-Passwod: You Sipgate password (see link above)
SIP Server: sipgate.de:5060
Proxy: proxy.live.sipgate.de
If you have trouble with CSipSimple, try [Zoiper](https://makandracards.com/makandra-orga/4...
Here is how to set up GPG encryption for emails in Thunderbird on Ubuntu.
Before starting, create a new entry in KeePass for your GPG key and create a new password. See the Security Guidelines for password policies.
Start generating a key by running the following command in your terminal
gpg --full-gen-key
dm-crypt has multiple passphrase slots. The process will be to add a new passphrase to a new slot, check that it works, and then remove the old passphrase.
$ lsblk --fs
NAME FSTYPE LABEL UUID FSAVAIL FSUSE% MOUNTPOINT
nvme0n1
├─nvme0n1p1 vfat 65CB-0937 503,2M 2% /boot/ef...
Wir verwenden SSH-Schlüssel für die Authentifizierung gegenüber unseren Servern. Wir verwenden niemals eine passwortbasierte Authentifizierung. Unsere SSH-Schlüssel sind mit einem Passwort verschlüsselt, um einen zweiten Faktor für die Authentifizierung zu erfordern, falls ein Schlüssel kompromittiert wird.
Bevor du beginnst, lege in KeePass einen neuen Eintrag für deinen SSH-Schlüssel an und erstelle ein neues Passwort. Siehe die Sicherheitsrichtlinien für Passw...
(see attachment)