How to force trust SMTP Let’s Enrypt cert on Linux?

There’s an SMTP server running on When I try to establish SSL connection with it, it fails with certificate verification error. Here’s an example openssl output (Debian 11.1, OpenSSL 1.1.1k): $ openssl s_client -connect CONNECTED(00000003) depth=0 CN = verify error:num=20:unable to get local issuer certificate verify return:1 depth=0 CN = verify … Read more

Cannot change brightness on Lenovo Thinkpad E14 Gen3

I bought the Lenovo Thinkpad E14 Gen3 with AMD Ryzen 3 5300u APU recently, I received this laptop yesterday only. I use ArchLinux for my OS with the DWM window manager. This is the first time I am using a AMD CPU instead of Intel one. Most of things are working except the fingerprint scanner. … Read more

Gigabit ethernet interface only runs at 100Mbps on Debian 10

I have trouble with my ethernet adapter. It is a Gigabig interface and runs as such after rebooting my machine. But after a while (I have not yet found any correlation as to why and when this happens) it switches to 100Mbps mode. It is a Qualcomm adapter (ASROCK FM2A78M-ITX+ mainboard), here is the output … Read more

Local mount of SFTP contents not visible from Docker container

thanks in advance for reading…I have mounted a SFTP share locally on my linux system (unraid) using the following anonymized command with the curlftpfs utility: curlftpfs -v server.ip.address /local/file/path -o ssl,no_verify_peer,no_verify_hostname,direct_io,user=username:password This mounts successfully, and in a terminal window or file browser on host OS i can navigate and manipulate the files as i see … Read more

Create an additional IP address from the subnet on Linux Kali

First of all I’m connected via OpenVPN with another machine. My network configuration looks like this: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 … Read more

Custom Menu Ender 3 V2

I’m trying to add a custom menu item to shutdown the pi and cannot get it to work. Uncommented #define CUSTOM_MENU_MAIN and put #define MAIN_MENU_ITEM_1_DESC “Turn off Pi” #define MAIN_MENU_ITEM_1_GCODE “M118 A1 action:shutdown” #define MAIN_MENU_ITEM_1_CONFIRM          // Show a confirmation dialog before this action To no success unfortunately . Compiled, flashed from … Read more

2 OS(Windows 10/Linux) 1 PC simultaneous with 2 keyboard/mice and 4 monitor

I’m using dual boot to switch from work to gaming which is troublesome. I would like to have both OS running at the same time and the Linux one use my iGPU (worst case scenario I could get another dedicated card) and windows use my dedicated GPU. Basically I thought I might setup a Hyper-V … Read more