Unable to install Ubuntu Mate and Vanilla Ubuntu together for dual boot on a UEFI system (primary bug reported for Ubiquity, but a narrow fix could be implemented by Mate)

[GizmoChicken]

I reported for Ubiquity a bug in which, when using the "something else" installation mode (which I must use for various reasons), a second Ubuntu installation overwrites the /EFI/ubuntu (on ESP) for a first Ubuntu installation, preventing me from booting into the first Ubuntu installation without workarounds. See https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1855874

REGARDING MATE: As I mention in the above linked bug report, at least when using the "something else" installation mode, attempting to install Ubuntu Mate alongside vanilla Ubuntu ALSO triggers the above described bug. That is, installing Ubuntu Mate also overwrites previous instances of /EFI/ubuntu on the ESP.

SUGGESTION: By default, Ubuntu Mate should install EFI files to /EFI/ubuntu-mate (and not to /EFI/ubuntu) on the ESP, which would overcome this issue for Ubuntu Mate users.

Please note that my suggestion would also benefit those Mate users who don't dual boot, in that those users would see an UEFI NVRAM entry that lists Ubuntu Mate rather than seeing seeing a UEFI NVRAM that list vanilla Ubuntu, but that actually boots Ubuntu Mate, as is the current situation.

Of course, fixing the underlying issue in Ubiquity would be even better. But in the meantime, the above suggestion would at least overcome the issue for those who want to dual boot Ubuntu Mate and Vanilla Ubuntu on the same UEFI system.

[Launchpad Janitor (janitor)]

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for Ubuntu MATE because there has been no activity for 60 days.]