Terminal-based GPG mail encryption and decryption for sending PGP messages to one or more recipients.

Zoom on Ubuntu Mate can misdetect HiDPI displays and render oversized controls, especially with multiple monitors. Forcing the scale factor in ~/.config/zoomus.conf restores the expected button size.

Poor Zoom audio often comes from the wrong input, low gain, wiring noise, or weak sound hardware. Testing recordings and using an external USB sound card can isolate the cause.

Dark gray shading can appear in Zoom screen shares on Ubuntu MATE because Compton adds shadows inside Zoom’s capture border.

Exporting a GPG private key lets you reuse the same signing key on another machine after changing its expiry; gpg2 and Enigmail may need a separate import.

Nach dem Suspend fällt das Touchpad-Scrollen auf ThinkPads unter Ubuntu MATE 18.04 aus; ein psmouse.synaptics_intertouch=0-Kernelparameter behebt den bekannten Bug.

winmail.dat entsteht meist durch falsch konfigurierte Outlook-Einstellungen und versteckt Anhänge oder Kalendereinladungen in einem proprietären Format. Häufig hilft nur die Änderung der Absenderkonfiguration; Gmail kann die Datei oft auslesen.

Ubuntu wechselt das Standardmikrofon gelegentlich automatisch, etwa zwischen Headset und Webcam. pactl setzt eine feste Eingangsquelle, die sich bei der Anmeldung per Skript beibehalten lässt.

Zoom screen sharing on Linux can spike CPU usage and slow other apps. Limiting shared frames per second and disabling video reduces the load.

Keyboard shortcuts for Zoom meetings speed up muting, screen sharing, inviting participants, and ending calls without using menus.

SIP caller ID on SNOM phones can display your own number instead of the caller's when the provider sends multiple lines. Adjusting display settings or provider routing fixes ring and call-log numbers.

Suspend can leave Ubuntu MATE 18.04 unlocked when screen locking fails before sleep. A systemd hook and xss-lock workaround force locking during suspend.

Newer kernels and Xorg drivers on Ubuntu LTS can improve support for recent hardware, WiFi, and graphics when the default stack falls short.

Dell U2410 monitors can stop responding to the power button after being switched off and restarted. Unplugging the power cable for about 10 minutes restores power-on behavior.

Date formats in English e-mails can be ambiguous and cause misreadings across regions. Writing the date as June 21, 2018 or 21 June 2018 avoids confusion.

Set up email encryption in Thunderbird on Ubuntu with gpg, including key creation, public-key exchange, and keyserver publishing.

Changing a LUKS passphrase safely means adding a new slot, verifying it at boot, then removing the old credential.

Thunderbird can auto-mark mail as read and junk, which hides unread messages and misclassifies mail. Disabling the read and adaptive junk options keeps new mail untouched.