nuitsdechine

Hello you knowledgeable people, As the title says it, I have a very weird context into which my printer, driven by Cura, stutters. The setup : Linux (Gentoo), Cura 4.4.0, USB cable, Ender 3 Pro printer. Offline printing (copy STL to SD card, move SD card to printer, print) works great. Direct USB printing works great. Almost. As soon as the *screen* blanks out (powersave mode, not screensaver), the printer begins to stutter. If I do anything that lights the screen (moving the mouse, hitting any key), stuttering stops instantly and the printing continues at its usual speed. Screen is HDMI-connected, if this could be useful. Disabling the screensaver does not solve the problem. Does anyone of you has any idea on where to look to debug (and correct) this behaviour ? Tia.