I am still experiencing this issue, but I am unable to provide more information, besides what I have already tried to collect before. I can say that my laptop is the "Slimbook KDE 15 gen II", from 2020, the same exact model that was reviewed here: https://pointieststick.com/2020/07/23/the-superfast-ryzen-powered-kde-slimbook/ The tech specs as fare as I know are the same for all laptops of this model (except maybe RAM and SSD size, that should not be related to the present issue), so maybe there can be the chance that somebody else with the same laptop could provide more info or test this.