error: cannot open `/boot/efi/EFI/BOOT/BOOTX64.efi': Is a directory.

[shawn]

Grub2 wouldn't install ubuntu and mint both with Mate. I noticed during the install that the gnome keyring failed. I'm thinking that may be needed to install the bootloader. If so either you guys or mate failed to check what changes gnome made to the keyring. I'm seeing them sending the information out to Gnome3 install teams but failing to inform others of the key ring changes and the gnome team loves changes, now if we could get them to reduce their code for a few revisions everything might be more stable. Hope this helps and sorry about the rant at the end.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.6
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CasperVersion: 1.394
Date: Tue Dec 4 13:48:27 2018
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-mate.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu-MATE 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
 LC_NUMERIC=C.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)