Toshiba Satellite R830

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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.

Brightness

xbacklight from xorg-xbacklight works fine.

Suspend and resume

Brightness controls works until sleep. After resume brightness does not work.

Adding to kernel acpi_osi=Linux acpi_backlight=vendor bootloaders kernel-line (see Kernel Parameters) helped me.

There is another solution here: https://bbs.archlinux.org/viewtopic.php?id=132044