Correction: This occurence happened on ANOTHER, DIFFERENT system. I rebuilt the PC I had Debian on, and same error returns, regardless of hardware. Now I have here:
Kernel: 4.19.0-6-amd64 Uptime: 16 hours, 20 mins Packages: 1580 (dpkg) Shell: bash 5.0.3 Resolution: 1920x1080 DE: MATE WM: Metacity (Marco) WM Theme: Menta Theme: Menta [GTK2/3] Icons: menta [GTK2/3] Terminal: mate-terminal Terminal Font: Monospace 11 CPU: AMD Ryzen 7 1700 (16) @ 3.000GHz GPU: AMD ATI Radeon HD 2400 PRO Memory: 6749MiB / 32102MiB -- Kind regards, Piotr Drozdek