Toshiba Satellite R830
Wi-Fi & Ethernet
Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) and Intel Corporation 82579V Gigabit Ethernet with kernel 3.8 work out of the box.
xbacklight fromworks fine.
Suspend and resume
Brightness control works until sleep but after resume it does not.
acpi_osi=Linux acpi_backlight=vendor to kernel-line (see Kernel Parameters) helped me.
There is another solution here: https://bbs.archlinux.org/viewtopic.php?id=132044