Problem: If you install ubuntu 10.04 Desktop by default every user can shutdown,reboot,hibernate or standby a PC If you want to disable this make: – install gdm2conf from the ppa channel to customize hide System Menu at Login GDM2 Manager – create custom Gnome System Menu Policy against User shutdown,reboot,hibernate or standby. Steps: create new policy file: #sudo touch /etc/polkit-1/localauthority/50-local.d/custom-menu.pkla edit new policy: #nano nano /etc/polkit-1/localauthority/50-local.d/custom-menu.pkla insert into: [Disable suspend] Identity=unix-user:* Action=org.freedesktop.devicekit.power.suspend ResultActive=no ResultAny=no [Disable hibernate] Identity=unix-user:* Action=org.freedesktop.devicekit.power.hibernate ResultActive=no ResultAny=no [Disable shutdown] Identity=unix-user:* Action=org.freedesktop.consolekit.system.stop ResultActive=no ResultAny=no [Disable reboot] Identity=unix-user:* Action=org.freedesktop.consolekit.system.restart ResultActive=no ResultAny=no reboot and try! To disable CTRL-ALT-DEL REBOOT edit […]
Tag: lucid lynx
Ubuntu 10.04 Lucid Lynx: JWM Window Manager hangs on Login
Bug: If you want to use JWM as fast Window Manager instead of Gnome you got a little Bug, after Login at GDM Login Manager the JWM Desktop seems to hang. Background: missing deps of menu and menu-xdg Solution: #sudo aptitude install menu menu-xdg #sudo update-menus #sudo service gdm restart if you miss some installed Programs then edit: #sudo nano /etc/menu-methods/jwm (and add lines, easy look for other program lines and copy them) after close and save the jwm file-menu-template run #sudo update-menus and relogin.. enjoy the fast slim Desktop..
Ubuntu Lucid Lynx 10.04: Disable IPv6 (dmesg = no IPv6 routers present)
Problem: on default ubuntu lucid lynx setup ipv6 is enabled, dmesg shows boot.log= wlan0: no IPv6 routers present to speed up on a ipv4 network you should disable it. Solution: – run #sudo nano /etc/sysctl.conf add lines: #disable ipv6 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 -quit save and reboot.. -to test system open terminal and enter #dmesg -the message = wlan0: no IPv6 routers present should not be seen!
Ubuntu Lucid Lynx 10.04 Bug vnc4server press “m” not usable! vnc4server
Problem: If you install vnc4server and open a ssh tunnel session to you Lucid Lynx Server you can’t press little key “m” cause it highlights taskbar indicator applet! Solution1: 1. edit /home/username/.vnc/xstartup 2. add lines: #!/bin/sh # Uncomment the following two lines for normal desktop: # unset SESSION_MANAGER # exec /etc/X11/xinit/xinitrc [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources xsetroot -solid grey vncconfig -iconic & x-terminal-emulator -geometry 80×24+10+10 -ls -title "$VNCDESKTOP Desktop" & x-window-manager & #gnome-session & (disable gnome opens only Screen with a Xterm) 3.save xstartup 4.restart vncserver #vncserver -kill :1 and then […]
Ubuntu 10.04 Lucid Lynx disable hide REBOOT SHUTDOWN STANDBY SUSPEND GNOME SYSTEM MENU SECURE KIOSK MODE
Problem: If you install ubuntu 10.04 Desktop by default every user can shutdown,reboot,hibernate or standby a PC If you want to disable this make: – install gdm2conf from the ppa channel to customize hide System Menu at Login GDM2 Manager – create custom Gnome System Menu Policy against User shutdown,reboot,hibernate or standby. Steps: create new policy file: #sudo touch /etc/polkit-1/localauthority/50-local.d/custom-menu.pkla edit new policy: #nano nano /etc/polkit-1/localauthority/50-local.d/custom-menu.pkla insert into: [Disable suspend] Identity=unix-user:* Action=org.freedesktop.devicekit.power.suspend ResultActive=no ResultAny=no [Disable hibernate] Identity=unix-user:* Action=org.freedesktop.devicekit.power.hibernate ResultActive=no ResultAny=no [Disable shutdown] Identity=unix-user:* Action=org.freedesktop.consolekit.system.stop ResultActive=no ResultAny=no [Disable reboot] Identity=unix-user:* Action=org.freedesktop.consolekit.system.restart ResultActive=no ResultAny=no reboot and try! To disable CTRL-ALT-DEL REBOOT edit […]