https://wiki.archlinux.org/index.php/RAIDI've done some pretty heavy re-writes; you mdadm gurus, please check for accuracy.
Network and Xorg issues sounds to me like you did too much in one go.https://wiki.archlinux.org/index.php/Be … leshootingCheck the connection, check the driver status and load the module: https://wiki.archlinux.org/index.php/Ne … figurationIf the network interface doesn't show up (eth0), read this part: https://wiki.archlinux.org/index.php/Ne … Interfaces
The ArchLinux Wiki has the best documentation available and with the problems you describe here, if it does not suffice, ArchLinux is likely not for you.Everyone can install ArchLinux and most can use it, but it does require more from the user than Ubuntu and such.https://wiki.archlinux.org/index.php/The_Arch_Wayhttps://wiki.archlinux.org/index.php/Beginners%27_Guide
Things should be working as outlined in the wiki: https://wiki.archlinux.org/index.php/Sy … managementIf you think it's important, you can add a line about halt, although it's already mentioned in systemd FAQ https://wiki.archlinux.org/index.php/Sy … r_stays_onThere's also https://wiki.archlinux.org/index.php/Al … o_ShutdownObviously you can use an alias e.g.alias halt='sudo sy
Start by installing the appropriate video drivers.https://wiki.archlinux.org/index.php/Intelhttps://wiki.archlinux.org/index.php/AtiAlso see: https://wiki.archlinux.org/index.php/hy … e_GraphicsI have searced and found in some forum posts that AMD catalyst is not compatible with xorg-1.15.Therefor I'd try the open source one first, see link above.
With 'user' option it should mount OK.If you have gvfs installed, you have polkit, so check if the session is active: https://wiki.archlinux.org/index.php/Ge … ermissionsNot sure if https://wiki.archlinux.org/index.php/Xf … le_Devices has any useful info.