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Setting up OpenPGP Keys on Ubuntu 24.04 (Noble)

Setting up OpenPGP Keys on Ubuntu 24.04 (Noble) First install seahorse:     sudo apt install seahorse     Launch the application by searching for the following name in the Apps launcher: Passwords and Keys Click on:  GnuPG keys Then click on:  Add new items Then, from the pop-up list, select:  GPG key A dialog window pops-up with the title:  New PGP key Enter the following details: Full Name Email Address Comment  (a short description of your key's purpose, e.g. UbuntuOne Launchpad) Encryption Type: RSA  (as per current standards) Key Strength (bits): 4096  (as per current standards) Expiration Date:  (preferably, Never Expires) Click on:  Create A prompt pops-up with the title:  Allow inhibiting shortcuts Click on: Allow A dialog window pops-up with the title:  Passphrase for New PGP Key Enter your password and confirm password in the two text boxes. Click on: OK A dialog window pops-up with the title:...
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Decrypting PGP-encrypted messages

Decrypting PGP-encrypted messages Save the PGP-encrypted message as a text file (e.g. abc.txt). The PGP-encrypted message is usually enclosed within these two placeholders: -----BEGIN PGP MESSAGE----- -----END PGP MESSAGE----- If not, then include them in the text file, at the start and at the end, respectively. This is very important. Then, run the following command:      gpg --decrypt abc.txt      You will be prompted for the GPG passphrase. Enter it. Upon success, the decrypted message will be printed on the console.
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tracker-miner stuck

tracker-miner stuck This is a bugging issue, and it ends up consuming a good chunk of the CPU, which is identifiable by the continuously running CPU fan at high speeds. How to resolve it? Stop the tracker miner:      systemctl --user stop tracker-miner-fs-3.service      Delete its current cache, reset it, and then restart it (all in one go):      tracker3 reset --filesystem --file --rss     
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Bluetooth Error: obex connect failed with 0x53

Bluetooth Error: obex connect failed with 0x53 BlueZ is the Bluetooth protocol stack for Linux. According to it, the opcode 0x53 denotes Service Unavailable . This is a temporary error that is caused by an ongoing Bluetooth process. This could be due to some application or service (in the foreground or in the background) that is currently sending data to the same device. It could also occur if you have forgotten to close any window (or notification) pertaining to the device's Bluetooth transfer, even after the transfer has been completed (successfully or unsuccessfully). Reference: Obex Source Code
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Dependency failed for sssd-nss.socket

Dependency failed for sssd-nss.socket (while booting) [DEPEND] Dependency failed for SSSD NSS Service responder socket. [DEPEND] Dependency failed for SSSD…toFS Service responder socket. [DEPEND] Dependency failed for SSSD PAC Service responder socket. [DEPEND] Dependency failed for SSSD…vice responder private socket. [DEPEND] Dependency failed for SSSD PAM Service responder socket. [DEPEND] Dependency failed for SSSD SSH Service responder socket. [DEPEND] Dependency failed for SSSD Sudo Service responder socket. If you do not want to utilize SSSD, then you can stop and disable the services using the following commands:      sudo systemctl stop sssd               sudo systemctl disable sssd      If you wish to mend it instead, then make the necessary changes:      sudo cp /usr/lib/x86_64-linux-gnu/sssd/conf/sssd.conf /etc/sssd/.      sudo chmod 600 /etc/sssd/sssd.conf    ...
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Failed to start apache2.server

Failed to start apache2.server (while booting or otherwise)      sudo systemctl status apache2      results in the following message: × apache2.service - The Apache HTTP Server       Loaded: loaded (/usr/lib/systemd/system/apache2.service; enabled; preset: enabled      Active: failed (Result: exit-code) since Fri 2025-08-29 08:17:06 IST; 1h 33min ago        Docs: https://httpd.apache.org/docs/2.4/         CPU: 95ms Aug 29 08:17:02 mfcarlo-HP-Pavilion-dv6-Notebook-PC systemd[1]: Starting apache2.server - The Apache HTTP Server... Aug 29 08:17:06 mfcarlo-HP-Pavilion-dv6-Notebook-PC apachectl[1768]: apache2: Syntax error on line 146 of /etc/apache2/apache2.conf: Syntax error on line 3 of /etc/apache2/mods-enabled/php8.1.load: Cannot load /usr/lib/apache2/modules/libphp8.1.so into server: /usr/lib/apache2/modules/libphp8.1.so: cannot open shared object file: No such file or directory Aug...
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