"Fix now" button does not solve "A problem has been detected with your thumbnail cache." #3863

Activity

1. cweiske commented on Oct 22, 2026

   

   cweiske

   on Oct 22, 2026

   Author

   More actions

   I had the same problem with a different user and managed to fix it:

   Originally, some folders and files were not owned by my user's own group cweiske but the generic users:

   cweiske@pixy:~/.cache/thumbnails$ ls -lah
   insgesamt 352K
   drwx------   7 cweiske users   4,0K  5. Nov 2024  .
   drwx------ 159 cweiske users   4,0K 20. Okt 15:24 ..
   drwx------   4 cweiske users   4,0K  8. Jan 2017  fail
   drwx------   2 cweiske users   260K 21. Okt 15:52 large
   drwx------   2 cweiske users    68K 21. Okt 14:25 normal
   drwx------   2 cweiske cweiske 4,0K  5. Nov 2024  x-large
   drwx------   2 cweiske cweiske 4,0K  5. Nov 2024  xx-large
   
   cweiske@pixy:~/.cache/thumbnails$ ls -lah large/
   [...]
   -rw------- 1 cweiske cweiske 4,8K 15. Sep 14:38 ffb091f9a17195285ee36a28d5b0caa4.png
   -rw------- 1 cweiske cweiske  40K  1. Sep 08:33 ffd6db082f45660b38ae9fb2c2528554.png
   -rw------- 1 cweiske cweiske  13K 26. Aug 09:40 ffde0b6e931d57dc4e102a74366b364d.png
   -rw------- 1 cweiske users    23K 11. Mai 2022  ffe22a35fb6f6a7b6a00ade367d8cdab.png
   -rw------- 1 cweiske cweiske 101K 17. Jun 10:21 ffe2a50f3279dfad23a85971b589b369.png
   

   After changing that to my own user group the "A problem" banner was gone:

   cweiske@pixy:~/.cache/thumbnails$ chgrp -R cweiske .
   

   My groups:

   $ id
   uid=1000(cweiske) gid=1000(cweiske) Gruppen=1000(cweiske),20(dialout),33(www-data),100(users),124(docker),125(wireshark),127(vboxusers),994(blueman),1003(cj),1004(cweiske-home)