id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
494	Use of PS/2 mouse breaks IRQ link that was set up manually	Lars Erdmann	eco	"For this problem: 
this system has 2 onboard PS/2 ports (one for mouse, one for keyboard). It also has 3 onboard OHCI USB controllers.
1.) One of the onboard OHCI USB controllers was ""dead"". That was because its PCI interrupt pin was not properly hooked up to any IRQ line. The USB controller in question is tied to LINK LNKE.
I specified this in config.sys to rectify the situation:
PSD=ACPI.PSD /OS=""Microsoft Windows"" /EIS /LNK:LNKE:5 which fixed the problem.

2.) I now plugged in a PS/2 mouse (instead of the USB mouse I normally use). That ""kills"" the setup of LNKE so that again the affected OHCI USB controller becomes inoperational.

What I already tested: I have this setting my BIOS:
a.) ""PS/2 Mouse wakeup from S3"". I toggled between ON and OFF but it did not make a difference.
b.) I used the original IBM 10.162 drivers, then I tried my updated USB drivers (work in progress). However the behaviour for the described problem is exactly the same.

Find attached the ""DSDT"" and the ""FACP"" tables of my system.
"	defect	closed	major	Release version 3.19	ACPI PSD	3.18	Unsupported Version