On Tue 29 Apr 2025 at 13:39:23 (+0200), Bernard wrote: > bd@debian-stretch:/usr/local/lib$ ls -l > [ … ] > 10 april must be the date I installed that awful ISPY/Agent package > 17 april 2023 must be the date of install of my current Bullseye > > then : > > bd@debian-stretch:/usr/local/lib$ ls -ult > total 1000 > lrwxrwxrwx 1 root root 21 29 avril 10:54 libva-drm.so.2 -> > libva-drm.so.2.2200.0 > lrwxrwxrwx 1 root root 17 29 avril 10:54 libva.so.2 -> libva.so.2.2200.0 > lrwxrwxrwx 1 root root 21 28 avril 21:06 libva-drm.so -> libva-drm.so.2.2200.0 > lrwxrwxrwx 1 root root 17 28 avril 21:06 libva.so -> libva.so.2.2200.0 > -rwxr-xr-x 1 root root 50896 28 avril 01:20 libva-drm.so.2.2200.0 > -rwxr-xr-x 1 root root 953408 28 avril 01:20 libva.so.2.2200.0
So, long after you removed the ispy package (perhaps around 21 avril 10:38), the library files are still being read. > drwxr-xr-x 2 root root 4096 21 avril 10:38 pkgconfig > drwxr-xr-x 3 root root 4096 21 avril 10:38 python3.9 > -rwxr-xr-x 1 root root 979 10 avril 17:59 libva-drm.la > -rwxr-xr-x 1 root root 925 10 avril 17:59 libva.la > > 29 april 10:54 is… a few minutes ago And what was going on then? And during the evening before, when the other pair of symlinks were touched in some way. > Then, I made another attempt to run a mp4 video file using most recent > ‘vlc’, getting the usual displayed error message : > > Codec non pris en charge: > VLC ne peut pas décoder le format « h264 » (H264 - MPEG-4 AVC (part 10)) And at that point, I would have looked again at ls -ult to see whether anything had changed. > Then, right after this : I, once more, removed and purged VLC, then > re-installed it. This being done : > > bd@debian-stretch:/usr/local/lib$ ls -ult > total 1000 > -rwxr-xr-x 1 root root 50896 29 avril 11:17 libva-drm.so.2.2200.0 > -rwxr-xr-x 1 root root 953408 29 avril 11:17 libva.so.2.2200.0 > lrwxrwxrwx 1 root root 21 29 avril 10:54 libva-drm.so.2 -> > libva-drm.so.2.2200.0 > lrwxrwxrwx 1 root root 17 29 avril 10:54 libva.so.2 -> libva.so.2.2200.0 > lrwxrwxrwx 1 root root 21 28 avril 21:06 libva-drm.so -> libva-drm.so.2.2200.0 > lrwxrwxrwx 1 root root 17 28 avril 21:06 libva.so -> libva.so.2.2200.0 > drwxr-xr-x 2 root root 4096 21 avril 10:38 pkgconfig > drwxr-xr-x 3 root root 4096 21 avril 10:38 python3.9 > -rwxr-xr-x 1 root root 979 10 avril 17:59 libva-drm.la > -rwxr-xr-x 1 root root 925 10 avril 17:59 libva.la > > 29 april 11:17 is when the de-install re-install of ‘vlc’ was carried, > then the test was run attempting to play a mp4 file with VLC. Same > error message as previously. Well, running vlc at about the same time as reinstalling it makes sure that any data you collect is as ambiguous as possible. Reinstalling a Debian package /should/ have no effect on files in /usr/local/lib/, unless there are some unusual symlinks, or some use of configuration data that I'm not familiar with. > As I found soon after, the changes shown in ls -ult are solely due to > the re-install of the VLC package… any more call to > > vlc myfile.mp4 > > no longermodify the results of > > usr/local/lib/ ls -ult Now we run into another problem: the OS could be caching the targets of the symlinks and the contents of the libraries, avoiding the necessity of rereading them. # echo 3 > /proc/sys/vm/drop_caches each time, should prevent it doing that. Cheers, David.
