Enable gnome classic on RHEL8

1. Update the system to RHEL8.5 or higher.
2. Ensure that the system has gdm-40.0–11.el8(or higher), accountsservice-0.6.55–2.el8(or higher)

#rpm -qa gdm 
#rpm -qa accountsservice

3. copy the /usr/share/accountsservice/user-templates/standard file to /etc/accountsservice/user-templates/standard

# cp /usr/share/accountsservice/user-templates/standard /etc/accountsservice/user-templates/standard

4. Change the value of Session=gnome with Session=gnome-classic in the /etc/accountsservice/user-templates/standard file

# vim /etc/accountsservice/user-templates/standard
[Template]
EnvironmentFiles=/etc/os-release;
[com.redhat.AccountsServiceUser.System]
id='${ID}'
version-id='${VERSION_ID}'
[User]
Session=gnome-classic
Icon=${HOME}/.face

5. Switch the runlevel

# init 3
# init 5

6. Install gnome-tweaks application

# dnf install gnome-tweaks

7. Open the Tweaks application. Select Extensions.

Enable Application menu
Enable Desktop icons
Enable Places status indicator
Enable Window list

tweaks