**Actual behaviour on 18.04**:
The value of the variable `GRUB_DISTRIBUTOR` in ///etc/default/grub// is set to ##`lsb_release -i -s 2> /dev/null || echo Debian`##.
Every time an `update-grub` is executed, the value of the variable is taken from the command `lsb_release` (which is `Ubuntu`, but theoretically could change).
**Actual behaviour on 18.10 and later**:
The value of the variable `GRUB_DISTRIBUTOR` in ///etc/default/grub// is set during the installation by Calamares. Calamares gets the value from the `bootloaderEntryName`, which is set for example to `Lubuntu 18.10`.
Every time an `update-grub` is executed, the hardcoded value is used.
Source => https://phab.lubuntu.me/source/calamares-settings-ubuntu/browse/master/lubuntu/branding/lubuntu/branding.desc
The value of `GRUB_DISTRIBUTOR` is hardcoded with a version. After a release-upgrade (e.g 18.10 => 19.04), the menu entry in Grub will still use the hardcoded value "Lubuntu 18.10", although the OS in use is Lubuntu 19.04.
According to T62 there might be a "platform expectation" that the menu entry should be called "Ubuntu" and not "Lubuntu".
There are several possible solutions.
# Set the value of `GRUB_DISTRIBUTOR` to ##`lsb_release -i -s 2> /dev/null || echo Debian`##.
# Hardcode the value to `Ubuntu`
# Hardcode the value to `Lubuntu`
# Find another, sophisticated solution
- Discuss and find the best solution
- Implement the defined solution