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When Installing there is NO way to override the autodetected mouse type.
This occurs in normal, expert modes. The machine hardware has a PS/2
controller but no PS2 mouse attached, anaconda finds this controller and
then starts the load of X windows giving no chance to change the mouse type
and within the X windows session there is no way to move between windows to
select the correct mouse type during an expert install

Reproducible: Always
Steps to Reproduce:
1. Boot from Disk or CD on a machine which has a PS2 controller with a
serial mouse attached for instance
2. Start the install process 
3. at x windows start the ps2 controller is found even thou I have a serial
mouse in. This is not a problem on new hardware where I can just plug in a
PS/2 mouse but on older machines P133 etc.. where there is PS/2
capabilities on the motherboard but no cable from the motherboard to a PS/2
port.	
	

Actual Results:  Xwindows Started but the serial mouse was not found and
ps/2 was selected which meant I could not do anymore of the install process

Expected Results:  Either the serial mouse needs to be probed for first or
the ability to select the correct mouse type needs to be added. 

Machine is a Pentuim 120 with 64 Meg ram and 4 gig Hard disk
The machine has a PS/2 controller but no cable from the motherboard to the
slots on the back of the machine to allow a PS/2 mouse to be pluged in.