On Mon 21 Apr 2025 at 18:03:04 (+0200), Bernard wrote: > I did reply to your message, sending the output of suggested aptitude > search below... but my reply does not appear to the list messages, > maybe because there were too many lines in it. In any case, I didn't > find anything meaningfull to me... which doesn't mean that there was > nothing...
No, it arrived all right, and has a list of about 205 packages, many or most of which belong to oldstable, the name it applies to Debian 11. You've got some iscan and mysql packages, plus kernels I don't recognise. Your libc and base-files both say you're running bullseye/11, but to my eyes (I'm no expert), I would guess that most of the system is likely made up of bookworm/12 packages. I think you should post your /etc/apt/sources.list here before taking further actions. You wrote "HAD TRIGGERED AN UNEXPECTED UPDATE of my system… ! (automatic updates were de-activated in my Debian 11)", but can you elaborate on "de-activate". Also make sure you distinguish carefully between "update" (only involves /var/lib/apt/lists/), "upgrade" (installs packages), and "dist-upgrade" or "full-upgrade" (can upgrade or remove packages, and change suite: Debian 11→12). > I just posted a new message saying that I saw messages from a number > of people having lost the use of H264 right after an update of their > Debian 11... and that I found that my late install of ISPY/AgentDVR > had carried an update... Still, I haven't solved my problem. You may have little option but to complete a full-upgrade to bookworm, but I wouldn't act hastily as your system still works, albeit without playing videos. Cheers, David.