I have installed Ubuntu 14.04 on my Lenovo Thinkpad Edge 520 and I am having some difficulties with an external monitor through HDMI. I have tried with the open source drivers, and it works normally using those. However, due to an unfortunate death of my desktop computer my Lenovo now needs to serve as my main computer and as such it is also a gaming computer. The open source drivers are sadly not sufficient to work reliably with games. So, when I am running the display through HDMI it looks like this with the fglrx driver package(not the experimental one):

So, that is clearly unsuitable for my uses. Any one have any suggestions how to fix, or where to log a bug report?

If this is the wrong forum for this, I apologise in advance. I'm also having some problems with suspend and resume with the fglrx driver, but that's beside this posts point. In case the link to the video does not work, please let me know and I'll post it somewhere else.