I am using Ubuntu 18.04 and my GNOME Shell version is 3.28. When I opened Ubuntu Software and checked the installed software, I found that there are 2 different versions of GNOME runtime (3.26 and 3.28):

Ubuntu Software

  1. How to check which one of them is running?
  2. Is it OK to uninstall one of them (the one that is not used)?

2 Answers 2


The GNOME runtimes contain the GNOME stack and shared libraries that are needed by snap apps (snaps) and their version number may be different than the GNOME Shell version number.

Due to the nature of snaps, every time there is a new snap update, a new stack and libraries is downloaded. The old ones don't get automatically deleted, but they get disabled. To get a list of your installed snaps, run:

snap list --all

You will see that some snaps have a disabled tag. These are snaps that you can safely remove by running:

snap remove <snap-name> --revision <rev-num>

where <snap-name> is the name of the app as it shows in the snap list --all command output and <rev-num> is the revision number of the app under the Rev column of snap list --all.

You will probably find that some revisions of GNOME 3.26 and 3.28 runtimes are enabled and some disabled. In that case, you may remove the disabled revisions, as described above, but you shouldn't remove the enabled ones, as both versions of GNOME 3.26 and 3.28 runtimes are needed by your snaps in order for them to work.

  • You can see, which snap is using which with snap connections
    – rubo77
    Nov 6, 2022 at 0:28

In addition to the other answer, to clean all old versions of snaps, try:

LANG=C snap list --all | while read snapname ver rev trk pub notes; do if [[ $notes = *disabled* ]]; then sudo snap remove "$snapname" --revision="$rev"; fi; done

Adapted from this Super User answer: How to remove old version of installed snaps

  • note: this would work only with english locales of ubuntu
    – BiAiB
    Aug 30 at 8:18

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