Hi, Installed SL 7.0 on ThinkPad T420s, X and WiFi worked out of the box and were running great till it is update to SL 7.1 with yum update. *Xorg* X does not work with new kernel, when booting up I have 3 choices of the grub menu: 1. Scientific Linux (3.10.0-229.1.2.el7.x86_64) 7.1 (Nitrogen) 2. Scientific Linux, with Linux 3.10.0-123.el7.x86_64 3. Scientific Linux, with Linux 0-rescue If I choose 1) I get the GDM login screen, it allows me to type in a username and password, but X does not fully load, it only loads a black screen with a mouse cursor then freeze, I can't even get to tty2. If I choose 2) then at least I get a usable desktop. So I am running the older kernel now and connect to the net through the wire, as WiFI no longer works neither: *WiFi* I use the GNOME WiFi applet to connect, it scans the surrounding SSID but nothing happens when I actually click on the SSID that I want to connect to, doesn't prompt for a password or anything. This is what appears in /var/log/messages when I click on any SSID in the WiFI applet: Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): Activation: starting connection 'Local Area Network' Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) scheduled... Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) started... Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): device state change: disconnected -> prepare (reason 'none') [30 40 0] Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): Activation: Stage 2 of 5 (Device Configure) scheduled... Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) complete. Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): Activation: Stage 2 of 5 (Device Configure) starting... Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): device state change: prepare -> config (reason 'none') [40 50 0] Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): Activation: (wifi) access point 'Local Area Network' has security, but secrets are required. Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): device state change: config -> need-auth (reason 'none') [50 60 0] Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): Activation: Stage 2 of 5 (Device Configure) complete. Apr 22 23:11:06 localhost NetworkManager[1061]: <warn> (wlp3s0): No agents were available for this request. Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): device state change: need-auth -> failed (reason 'no-secrets') [60 120 7] Apr 22 23:11:06 localhost NetworkManager[1061]: <warn> (wlp3s0): Activation: failed for connection 'Local Area Network' Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): device state change: failed -> disconnected (reason 'none') [120 30 0] Apr 22 23:11:06 localhost NetworkManager[1061]: <info> (wlp3s0): deactivating device (reason 'none') [0] Apr 22 23:11:06 localhost firewalld: 2015-04-22 23:11:06 ERROR: UNKNOWN_INTERFACE: wlp3s0 Apr 22 23:11:06 localhost /etc/gdm/Xsession: (cinnamon:3360): libnm-glib-WARNING **: async_got_type: could not read properties for /org/freedesktop/NetworkManager/ActiveConnection/1: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist Apr 22 23:11:06 localhost /etc/gdm/Xsession: (cinnamon:3360): libnm-glib-WARNING **: Device activation failed: (1) Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/1' failed in libnm-glib. Apr 22 23:11:06 localhost /etc/gdm/Xsession: (cinnamon:3360): libnm-glib-WARNING **: async_got_type: could not read properties for /org/freedesktop/NetworkManager/ActiveConnection/1: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist Apr 22 23:11:06 localhost /etc/gdm/Xsession: (cinnamon:3360): libnm-glib-WARNING **: async_got_type: could not read properties for /org/freedesktop/NetworkManager/ActiveConnection/1: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist Apr 22 23:11:06 localhost /etc/gdm/Xsession: (cinnamon:3360): libnm-glib-WARNING **: async_got_type: could not read properties for /org/freedesktop/NetworkManager/ActiveConnection/1: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist Help! Should I try downgrade NetworkManager or something? Cheers! Sunnz -- 空箱可貯物、深谷可容水。 https://yiu.co/