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, 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:
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 firstname.lastname@example.org
pub 4096R/ABC12345 2020-01-01 [expires: 2025-12-31] uid Your Name <email@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.
I noticed that after suspending my notebook, the thouchpad scrolling (at the edge or with two fingers) was not working any more. This seems to be
My setup is:
The linked comment above solved the problem for me:
You have to edit the file
/etc/default/grub (sudo!) and change this line:
# from: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" # to: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash psmouse.synaptics_interto...
When an incoming e-mail contains a single attachment named
winmail.dat, a Windows user has misconfigured their Outlook client. They are probably trying to send you an attachment or calendar invite, which are now compressed into the
winmail.dat attachment using a proprietary format. Outlook will also attach a
winmail.dat if such an user wrote a formatted e-mail.
If possible, ask the sender to fix their Outlook configuration:
In some circumstances it's possible for Ubuntu to switch the default microphone on its own, e.g. if you're using a headset connected by a 3,5mm plug and your USB webcam also has a microphone, Ubuntu might set the default microphone to the USB one in the webcam.
If that's not what you want, it's suprisingly hard to tell Ubuntu not to do it. Here is how.
Alternatively, you may disable all devices but the one you want to use. Note that this is not always applicable, e.g. if you want to keep your ot...
is a video conference tool that has great screen-sharing support on Linux. 
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.
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
[Unit] Description="Make extra sure to lock the screen when suspending" [Service] Type=oneshot User=root ...
When presenting with a projector, you probably want to mirror your screen. This way your laptop and the projector show the same image.
Your Linux display dialog will usually have a checkbox to mirror screens. However, checking this box might dramatically reduce the number of available resolutions. This is caused by incompatible lists of available resolutions between the both screens. Often you will end up with a very low common resolution, like 800x600.
What helps in such a case is to add the missing projector resolution for your laptop sc...
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:
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...
When transmitting sensitive information, we never want to send unencrypted e-mails, but use GPG/PGP encryption.
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
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...