I had been using the fglrx drivers with my AMD HD-6810 radeon card since I changed the OS (from default shipping Windows 7 to Ubuntu 12.04) on my HP dm1z 3014AU (now that’s about 2 yrs next month)
AMD command control center (amdcccle?) was controlling the settings and I had done some changes, it was all okay but when I ran my 1080 videos from ‘GoPro Hero2 Motorsports Edition’ .. they’d tear and lag (so did my 720p vlogs sometimes)
My laptop’s color temperature was quite different from my LED monitors (which I use for my game artwork), or even my tablet.
So the game would look a bit different in color saturation’s on my laptop.
Strangely, Ubuntu’s sysinfo for the driver showed VESA, but xorg.conf showed AMD and amdcccle was also able to make on the fly changes.
It was evident that I had both the drivers, and some apps were not looking at the right place (especially while reporting).
Anyway, out of hunch I decided to drop the fglrx drivers and use the radeon only (which wasnt so stable for the card/ubuntu version back then)..
$ sudo apt-get remove –purge fglrx fglRx_* fglrx-amdcccle* fglrx-dev* xorg-driver-fglrx
$ sudo apt-get install –reinstall xserver-xorg-video-ati xserver-xorg-video-radeon
$ sudo reboot
And after reboot, the color temp is quite cooler (although my laptop fan runs a bit more now), my vlog 720p videos play without tear, Audio of my ‘Altec Lansing’ speakers doesnt ‘tear’ on high volume (surprise!) and Ubuntu sysinfo shows “Gallium 0.4 on AMD PALM” which according to this (https://help.ubuntu.com/community/RadeonDriver) is the correct modesetting for HD6810 card 🙂
Let’s hope it works across VMs now 🙂
Have fun trying if you have the same/similar card (Disclaimer: I’m not responsible though :P)