RHEL7 嘗試使用Mate桌面，感覺還滿好用的，也沒什麼問題，到了RHEL8 本來也想繼續用Mate桌面，但是RHEL 8 最終選擇換成 XFCE桌面。
主要是因為 RHEL8, RHEL9 Mate desktop 都是用 1.26 source code，其中問題最大的是 mate-panel 即使降版到 1.24 還是覺得鈍鈍的，而且會有 could not acquire nameon session bus error
RHEL 9 更慘 mate-panel 不能降版，桌面load 速度超慢，could not acquire name on session bus 無解，所以最終就換成 XFCE桌面
RHEL8 OS安裝 minial
Standard Lagacy Unix Compatibility Graphical Administrator tools System Tools
掛載USB
lsblk
找到對應容量的硬碟空間
mount /dev/sdb1 /root/cdrom
安裝 epel repo
sudo dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
修改 repo
vi /etc/yum.conf keepcache=1 cachedir=/var/cache/yum vi /etc/yum.repos.d/rhel8.repo [BaseOS] name=Red Hat Enterprise Linux 8 - BaseOS metadata_expire=-1 gpgcheck=1 enabled=1 baseurl=file:///root/cdrom/BaseOS/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release [AppStream] name=Red Hat Enterprise Linux 8 - AppStream metadata_expire=-1 gpgcheck=1 enabled=1 baseurl=file:///root/cdrom/AppStream/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release [xfce] name=xfce baseurl=file:///root/cdrom/xfce/packages gpgcheck=0 enabled=1
檢查 repo 來源
dnf repolist dnf grouplist
安裝 X window
dnf groupinstall base-x core fonts hardware-support input-methods networkmanager-submodules standard Base -y dnf groupinstall "Legacy X Window System Compatibility" -y dnf groupinstall "Java Platform" -y #dnf groupinstall "Xfce" -y 如果有 epel repo dnf install lightdm exo garcon libxfce4ui libxfce4util Thunar thunar-archive-plugin thunar-volman tumbler xfce4-appfinder xfce4-panel xfce4-power-manager xfce4-pulseaudio-plugin xfce4-screensaver xfce4-session xfce4-settings xfce4-terminal xfce-polkit xfconf xfdesktop xfwm44 dnf install Thunar gdm mousepad openssh-askpass pinentry-gtk thunar-archive-plugin thunar-volman tumbler xfce-polkit xfce4-appfinder xfce4-panel xfce4-power-manager xfce4-pulseaudio-plugin xfce4-screensaver xfce4-session xfce4-settings xfce4-terminal xfconf xfdesktop xfwm4 xfce4-notes-plugin -y
