Yea, I've had a lot of issues with ATI when using Arch or linux in General. I actually have a script I have to run in the terminal to even get steam to boot in a way that allows me to launch games. I have been considering purchasing an Nvidia card but my ati one works for everything fine in my windows setup, I just was more testing development in Linux so I wanted to use it. I'll look in to finding a cheap nvidia card or maybe i'll just dual boot on my laptop.