ASUS X555L

Specs

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• i5 4210U
• Nvidia 840M
• SATA III storage @5400RPM. Easy to swap with an SSD.
• 8GB DDR3 RAM (The first 4GB are soldered onto the motheboard).
• 15" 720p LED.
• Broadcom BCM43142 WLAN + Bluetooth module.

Things that needed some tinkering to make work and are functional as of May, 2016.

• WLAN requires b43-firmware^AUR to be installed and modprobed, as well as any other WLAN drivers to be blacklisted.
• [FN] F5 and F6 keys for internal display brightness ―special thanks to Erkexzcx who advised me of his page for the Asus N550JV. Edit /etc/default/grub so that the line

GRUB_CMDLINE_LINUX_DEFAULT="quiet"

becomes

GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi_osi= "

Yes, there is a blank space in "acpi_osi= ". Next, rebuild your grub:

sudo grub-mkconfig -o /boot/grub/grub.cfg

and reboot.

Things pending to fix

• FN + F8, swaps display output.
• FN + F10/F11/F12, volume controls.
• FN + arow keys, multimedia controls.
• Bluetooth support. I have no use for it lately, so it's not a priority.