Comment 5 for bug 1747891

I get this error from the sessiom of GDM3:

$ journalctl -b -u user-120.slice -p 0..6 | grep -e gdm -e icc
Aug 19 16:28:21 lieselotte systemd[1]: Created slice User Slice of gdm.
Aug 19 16:28:21 lieselotte systemd[911]: pam_unix(systemd-user:session): session opened for user gdm by (uid=0)
Aug 19 16:28:41 lieselotte gsd-color[1021]: failed to set screen _ICC_PROFILE: Datei »/home/klaus/.local/share/icc/edid-7c4f47b635a0342d129ec38f20009786.icc« konnte nicht geöffnet werden: Keine Berechtigung
Aug 19 16:28:42 lieselotte gsd-color[1021]: failed to set screen _ICC_PROFILE: Datei »/home/klaus/.local/share/icc/edid-7c4f47b635a0342d129ec38f20009786.icc« konnte nicht geöffnet werden: Keine Berechtigung

gsd-color from user id 120 trys reading a private file of user id 1000. That seems wrong by design. It's a security fault.