Category Archives: UNIX/Linux

Linux: no sound after suspend/sleep – solution

30 April 2020
 

 I have a laptop with Arch Linux. It’s suspended with the systemctl suspend. The issue: after it’s wake up there is no sound. From the information found during the investigation (see links below) the issue happens because of the NVIDIA drivers and isn’t specific to the Arch Linux – can happen with any other Linux… Read More »

Steam: Civilization V, Arch Linux and ERROR:Invalid resolutions constraints: 0x0 must not be greater than 0x0

27 April 2020
 

 I’m using Steam on Arch Linux (see the Arch Linux: Steam installation). And I have Civilization V game here – my favorite game for last N-years. I have NVIDIA drivers installed and most of the games work fine, even World Of Tanks, but I wasn’t able to play Civilization from the moment I’ve installed Steam… Read More »

Linux: processes core dumps, systemd-coredump and Debian

14 March 2020
 

 Need to get a dump from fro ma PHP process on Debian 9. In this post will take a Linux kernel mechanism to create and manage processes dumps. Kernel’s dumps are created in another way, check Kdump на Arch Wiki. Linux Core Dump The kernel will create a process dump if it performed an invalid… Read More »

Linux: gnome-keyring setup as Freedesktop SecretService

26 February 2020
 

 Currently, I’m using KeePass as passwords, RSA-keys, and as the Freedesktop SecretService, see the KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys passwords storage configuration and Secret Service integration post. The first issue I faced with during such a setup is the fact that KeePass’ database is synced between my computers (it’s database… Read More »

Linux: PHP-FPM, Docker, STDOUT and STDERR – no an application’s error logs

24 February 2020
 

 We have a Docker image with NGINX, PHP-FPM, and Supervisor. In the same image, we have our PHP application included, which outputs its errors to the /dev/stderr as per its php.ini file: … [global] error_log=/dev/stderr … The problem is, that if run kubectl logs –  there will be no error output from the application. So,… Read More »

Debian: php7.3-curl : Depends: libcurl3 (>= 7.44.0) but it is not installable

23 January 2020
 

 We have a Jenkins job that runs a Docker container to build a PHP-application based on the Yii framework. Suddenly during the build, we got an error: … Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required… Read More »

KeePass: SSH keys passwords storage and decryption on Linux

13 December 2019
 

 As a follow-up to the SSH: RSA keys, and ssh-agent for SSH keys and their passwords management post. The idea now is to make simpler to work with password-protected SSH keys, to avoid the necessity to enter a password each time when you want to load a key to the ssh-agent. One of the possible… Read More »

KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys passwords storage configuration and Secret Service integration

12 December 2019
 

 So, this seems to be the last one post in the whole series about passwords and SSH management in Linux. The previous parts were about: Linux: the Nextcloud client, qtkeychain and the “The name org.freedesktop.secrets was not provided by any .service files” error – I found that a keyring service is able to store SSH… Read More »

Chromium: Linux, keyrings && Secret Service, passwords encryption and store

10 December 2019
 

 One of the motives to go deeper into the keyrings (see the What is: Linux keyring, gnome-keyring, Secret Service, and D-Bus post) was the fact that Chromium, surprise-surprise, keep passwords unencrypted if a Linux system has no keyring and/or Secret Service enabled. So, let’s try to find how and where Chromium store passwords, and the… Read More »