You have an ATI card and drivers for ATI are a bit problematic.
It may be really hard to get Beryl/Compiz working, but not "ordinary 3D"
Tell us which card you have and I will give you the solution (or the forum member Lolo Uila)
The mouse and keyboard are configured in xorg.conf
Can't help you with the keyboard but with the mouse
In xorg.conf you probably have a section that looks like this
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Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "true"
EndSection
You have to replace
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Option "Emulate3Buttons" "true"
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Option "Emulate3Buttons" "false"
Option "ButtonMapping" "1 2 3 6 7"
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sudo gedit /etc/X11/xorg.conf
First back up xorg.conf
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sudo cp xorg.conf xorg.conf.bak
No you should not have lock ups at all. However some hardware is a bit "tricky"
For sound please tell us which sound card (exactly) and motherboard you have
Sorry for this start but some hardware gives problems...
Had you for instance used nvidia video card and motherboard - no problems.....(that can't be solved by installing in "safe graphics mode" - mostly)