#1146567 ukui-control-center: GRUB boot entry list is empty with non-world-readable grub.cfg

Package:
ukui-control-center
Source:
ukui-control-center
Description:
utilities to configure the UKUI desktop
Submitter:
Pan Zhang
Date:
2026-09-03 09:13:02 UTC
Severity:
normal
#1146567#5
Date:
2026-09-03 09:10:30 UTC
From:
To:
Dear Maintainer,

The “Grub Default Boot Item” list on the “System Boot” page
(Settings -> General -> System Boot) is empty, although valid boot
entries exist in /boot/grub/grub.cfg and are shown correctly by GRUB.

Steps to reproduce:

   1. Open Settings -> General -> System Boot.
   2. Check the “Grub Default Boot Item” list.

Actual result:

The list is empty and no default boot entry can be selected.

Expected result:

The first-level GRUB menu entries should be listed and the current
default entry should be selected.

Recent grub-mkconfig versions generate /boot/grub/grub.cfg with mode
600 (umask 077). ukui-control-center appears to read this file directly
as an unprivileged user, so it can no longer obtain the menu entries.

The “Grub Boot Delay” setting on the same page is not affected.

Reproduced with:

   - ukui-control-center 4.20.0.1-1
   - GRUB 2.14-2ubuntu3

Regards,