OEL 8 VNC server issue:

Error:

The XKEYBOARD keymap compiler (xkbcomp) reports:

> Warning:          Could not resolve keysym XF86MonBrightnessCycle

> Warning:          Could not resolve keysym XF86RotationLockToggle

Errors from xkbcomp are not fatal to the X server

Fix:

 # dnf install tigervnc-server tigervnc-server-module -y

# cp /usr/lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@:16.service
# firewall-cmd --add-port=5916/tcp --permanent
# firewall-cmd --add-service=vnc-server --permanent
# firewall-cmd --reload
# vi /etc/tigervnc/vncserver.users
:16=user

# vi /etc/tigervnc/vncserver-config-defaults
securitytypes=vncauth,tlsvnc
desktop=sandbox
geometry=2000x1200
localhost
alwaysshared

# \su - user
user$ vncpasswd
user$ exit
# systemctl daemon-reload
# systemctl start vncserver@:16.service
# systemctl enable vncserver@:16.service
# systemctl status vncserver@:16.service

● vncserver@:16.service - Remote desktop service (VNC)
   Loaded: loaded (/etc/systemd/system/vncserver@:16.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Tue 2020-12-15 12:49:05 PST; 18min ago
 Main PID: 50980 (code=exited, status=0/SUCCESS)

Dec 15 12:49:04 xxxx.xxxx.xxx systemd[1]: Starting Remote desktop service (VNC)...
Dec 15 12:49:04 xxxx.xxxx.xxx systemd[1]: Started Remote desktop service (VNC).
Dec 15 12:49:05 xxxx.xxxx.xxx systemd[1]: vncserver@:16.service: Succeeded.