On Sun, Jan 27, 2019 at 09:11:33PM +0100, BELAHCENE Abdelkader wrote: > Sometimes (maybe often) when I leave the system for a times without > touching it, when I come back, the system is frozen , juste the pointer of > mouse can move, but nothing else, keyboard doesn't respond, even > ctrl+alt+F1 , or F2, ...
> Jan 27 20:29:52 mx kernel: [11477.409506] PM: suspend exit [...] > Jan 27 20:29:52 mx kernel: [11476.619289] sd 0:0:0:0: [sda] Starting disk [...] > Jan 27 20:29:52 mx kernel: [11476.091515] ACPI: Waking up from system sleep > state S3 [...] > Jan 27 20:29:52 mx kernel: [11476.082190] ACPI: Low-level resume complete Looks like your system is waking up from being suspended/hibernated. Try disabling suspension/hibernation and see if that prevents the issue. Something with the power management and system resume might not be working correctly. I am not very familiar with Linux hibernation, so there's not much more I can help with here. Jens