"Proposed" repositories exist on Ubuntu Linux and Debian. What are they for?

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In one of the experimental Linux installations I saw a network error. It manifests itself in the fact that ping passes, but Networkmanager shows the “No network” icon and network management through “Connection settings” does not work.

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At the launch of apt-get update, an error may occur Failed to start apt-news.service: Unit apt-news.service Not Found. Failed to start esm-cache.service: Unit esm-cache.serVice Not Found.

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On December 12, 2023, the signature of the repo.mysql.com repository expired, which caused a problem with updating MySQL using apt update.

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After cloning, the second remains - the old hard drive. Why is BSOD error when connecting to the system?

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x11vnc is a remote desktop program included in any Ubuntu distribution. Next, I’ll tell you how to configure x11vnc to run as a service.

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In the article I provided an overview of various VNC clients and servers, and links to projects for further consideration.

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How to configure a network using the interfaces file outdated.

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To speed up DNS name resolution, a local caching server is used. The difference (speedup) is 50-150 milliseconds per request for cached data. How to enable the service systemd-resolved in Linix Mint or Ubuntu?

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If third-party repositories are connected to the Linux operating system, when updating packages you may receive the error message "Key is stored in legacy trusted.gpg keyring".

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