On Thu 06 Jan 2022 at 12:06:56 (+0100), Lucio Crusca wrote: > On 06/01/22 00:34, Lucio Crusca wrote: > > > > Thanks, nice try, but, besides I've cleared all three steps just in case > > (CPU always below 5% while playing videos), none of those can explain why > > video playback still works correctly for all the users except mine. > > > > Since I needed videos to play, I had to workaround the problem. I logged in > as root, renamed my /home/lucio directory to /home/lucio-old, created a new > /home/lucio directory, copied over my data, .bash*, .config/google-chrome, > .config/xfce*, .thunderbird and some other folders and now videos do playback > correctly even with my user. That shows without a doubt that something was > broken in my home directory: I just can't imagine exactly what.
As your examples show, the culprits are usually in your dotfiles. When I first start to use a new Debian version, I generally quarantine the more complex ones, let the first run of the software create new ones, then compare the two versions and/or reinstate them as appropriate. Sometimes it means manually patching the new version with the modifications made in the old version. Cheers, David.