AMD Fire GL Drivers? Stuck in Unity 2D

[ReticentRobot]

So I just installed Ubuntu on my machine and then started Steam. Steam recommended that I install the experimental amd drivers, which i think said something about 'Xorg' on the Additional Drivers page that opened. I installed those and restarted. I then configured catalyst and finally got my 4 monitors all working (yay!), but now I seem to be stuck in Unity 2D. Any ideas how I can get Unity 3D back? Also, something kind of strage - I reopened the 'Additional Drivers' and now the option I had selected says 'ATI Fire GL' instead of what it said before about 'Xorg experimental'. It glows green but at the bottom says 'This driver is activated but not currently in use'.

[ReticentRobot]

Also, here is the info from Steam - System Information (any help is very much appreciated):

Processor Information:
Vendor: GenuineIntel
Speed: 3401 Mhz
8 logical processors
4 physical processors
HyperThreading: Supported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Unsupported
SSE41: Supported
SSE42: Supported

Network Information:
Network Speed:

Operating System Version:
Ubuntu 12.04.2 LTS (64 bit)
Kernel Name: Linux
Kernel Version: 3.5.0-27-generic
X Server Vendor: The X.Org Foundation
X Server Release: 11300000
X Window Manager: Metacity
Steam Runtime Version: steam-runtime-release-i386_2013-04-16

Video Card:
Driver: ATI Technologies Inc. AMD Radeon HD 6450

Driver Version: 4.2.12172 Compatibility Profile Context 9.01
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 0 Hz
VendorID: 0x1002
DeviceID: 0x6779
Number of Monitors: 1
Number of Logical Video Cards: 2
Primary Display Resolution: 5920 x 1050
Desktop Resolution: 5920 x 1050
Primary Display Size: 61.65" x 10.91" (62.60" diag)
156.6cm x 27.7cm (159.0cm diag)
Primary VRAM Not Detected

Sound card:
Audio device: Realtek ALC269VB

Memory:
RAM: 16006 Mb

Miscellaneous:
UI Language: English
LANG: en_US.UTF-8
Microphone: Not set
Total Hard Disk Space Available: 719913 Mb
Largest Free Hard Disk Block: 682279 Mb

Installed software:

Recent Failure Reports:

[intok]

So are you looking to use the AMD FGLRX driver blob or the open source Gallium3D drivers that come withthe distro? for performance without doing allot of tweaking oyu want the FGLRX blob. Now if you want to play around with the open source Gallium3D driver then you'll have to update your Xorg, Mesa, Kernel and R600 Gallium3D driver to bleeding edge experimental versions.

[ReticentRobot]

I just wanted to have the proprietary driver for AMD installed for max perfomance in steam, but also still be able to use unity 3D/compiz. It looks like that's not an option. I had to enable Xinerama to get my 4 monitors to work (ccc wouldn't save the monitor configuration without it enabled) but apparently xinerama is not compatible with compiz.

[intok]

Does your card support AMD's Eyefinity? That should cover it.

[ReticentRobot]

I haven't heard of Eyefinity before. I'm back in Windows at the moment (where my multimonitor setup just works automatically) and in CCC it says I can create an Eyefinity display group (whatever that means - it seems to be working just fine in windows without doing that but now I'm curious about what the difference between that and the default is).

I didn't see anything about Eyefinity in CCC in linux though...

[intok]

Eyefinity is AMD's method of allowing more then 2 displays on a single card, with the right card you can run up to 6 screens off a single card and can span this across as many cards as you can fit in your case, so you can have as many as 42 screens connected to a single computer if you want to build your own video wall.

[ReticentRobot]

That is interesting. I've got two 6450s and each of them run 2 monitors each so I don't necessarily need that capability... BUT if I could get all 4 monitors running with compiz intact it would be nice.