My graphics performance with ati radeon HD3200 used to be terribly slow with unity (even the 2D performance). Installing the proprietary fglrx driver via the OS interface caused errors and problems.
So I opted for a manual installation. I downloaded the correct driver for 64 bit from AMD:
amd-driver-installer-12.6-legacy-x86.x86_64.zip . This is the latest version to support the HD3200.
I enabled the restricted repositories and created the installation package. The manual installation worked without error messages, testing with fglrxinfo and fgl_glxgears works, everything is fast now.
My problem, however, is that after the first reboot, the whole screen is shifted about an inch to the left, so that I cannot see what is at the left margin of the screen. I could probably correct this via my monitor settings, but then I would have to change it back everytime I booted to Windows.
For the xorg.conf configuration I just used the recommendation I found on a Ubuntu helpsite:
sudo amdconfig --initial -f
I then changed my graphics card name in the Device Section.
Still the same screen problem.
The "monitor" section in the original xorg.conf file reads like this:
Section "Screen" Identifier "aticonfig-Screen-0" Device "aticonfig-Device-0" Monitor "aticonfig-Monitor-0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection
Somewhere I found an info where someone recommended these settings for the same monitor I have: HP LP2065 with 1600 x 1200. The settings were:
Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" SubSection "Display" Virtual 2560 1200 Modes "1600x1200" "1280x1024" "1024x768" "640x480" EndSubSection
Unfortunately, I am still a Linux newbie and destroyed the x-server and had to reinstall everything because I had no backup of the xorg.conf file...
So maybe someone has an idea what the problem might be. I really would like to use the proprietary driver without having to adjust the monitor itself. Maybe I just need the correct