This is probably coincidence but the working images are slightly bigger than the non-working ones:
-rw------- 1 dan dan 1964244992 May 24 10:46 cosmic-desktop-amd64-20180522.iso -rw------- 1 dan dan 1964244992 May 26 14:53 cosmic-desktop-amd64-20180525.iso -rw------- 1 dan dan 1964244992 May 30 15:48 cosmic-desktop-amd64-20180530.iso -rw------- 1 dan dan 1957183488 Jun 8 12:56 cosmic-desktop-amd64-20180606.iso -rw------- 1 dan dan 1957183488 Jun 7 15:55 cosmic-desktop-amd64-20180607.iso -rw------- 1 dan dan 1957183488 Jun 8 15:51 cosmic-desktop-amd64-20180608.iso -rw------- 1 dan dan 1957183488 Jun 13 12:40 cosmic-desktop-amd64-20180611.iso -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1775743 Title: [regression] Cosmic daily images 20180606-11 install but then never boot (stuck in grub). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1775743/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs