10
September
2020
16:39

Setting up RAM compression with ZSwap

10 September 2020 16:39

When the RAM runs out, the computer becomes very slow as it accesses the swap file on the hard drive. To solve this problem, the zswap module was invented. By default, it is disabled in the Linux operating system, but you can enable it.

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3
September
2020
AppArmor service does not start after installing MySQL - problem solution
11:35

AppArmor service does not start after installing MySQL - problem solution

3 September 2020 11:35

For diagnostic purposes, I have boot-time messages enabled in /etc/default/grub (line GRUB_CMDLINE_LINUX=""
).
When starting a computer running Linux Mint 19.2, errors like FAILED Failed to start AppArmor are visible. The problem started after reinstalling the MySQL service to manage relational databases. The solution to the "Failed to start AppArmor" problem is given below...

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26
August
2020
Balcony antenna 7-28 MHz from a fishing rod, with automatic tuner
15:45

Balcony antenna 7-28 MHz from a fishing rod, with automatic tuner

, , ,
26 August 2020 15:45

Due to the accessibility of the balcony at my place of stay, I decided to install the Ground Plane antenna on all amateur bands 7-28 MHz, and, if I can tune it, then on 3.6 MHz. The design from the article was taken as a basis http://www.dk3red.homepage.t-online.de/de/s15_01.htm. The antenna is a fishing rod with wire wound around it, a tuner at the base, grounded on the railing or glazing frame of the balcony.

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21
August
2020
A trip to Vysotsk
15:21

A trip to Vysotsk

,
21 August 2020 15:21

Previously, about 10-15 years ago, our whole family went on vacation to the islands near Vyborg, using Vysotsk as an intermediate point for transferring by boat to the Ostrovok recreation center. Now we don’t go to the base, because... she has owner changed. Therefore, I decided to visit the city of Vysotsk itself to remember how it was, just like that.

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