Kamil Jońca composed on 2021-01-28 17:58 (UTC+0100): > When I back to DVI monitor everthing work without errors.
Did you find a solution? Which Debian? I too have a PC with HD 5450 Radeon. I could try to reproduce if knowing what to boot is what I have installed. -- Evolution as taught in public schools, like religion, is based on faith, not on science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/