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Date: Wed, 07 Mar 2007 15:03:55 -0500
From: Chuck Ebbert <cebbert@redhat.com>
Organization: Red Hat
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To: linux-kernel <linux-kernel@vger.kernel.org>
Subject: PS/2 mouse port missing with kernel >=2.6.19, Sis chipset
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We have multiple reports of PS/2 mouse port not being found
on Sis 630 and 730 chipsets, starting with Fedora kernel 2.6.19:

2.6.18:
Jan 19 08:59:39 mtranch kernel: PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:PS2M]
at 0x60,0x64 irq 1,12
Jan 19 08:59:39 mtranch kernel: serio: i8042 AUX port at 0x60,0x64 irq 12
Jan 19 08:59:39 mtranch kernel: serio: i8042 KBD port at 0x60,0x64 irq 1
Jan 19 08:59:39 mtranch kernel: mice: PS/2 mouse device common for all mice

2.6.19:
Jan 20 09:22:30 mtranch kernel: PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:PS2M]
at 0x60,0x64 irq 1,12
Jan 20 09:22:30 mtranch kernel: serio: i8042 KBD port at 0x60,0x64 irq 1
Jan 20 09:22:30 mtranch kernel: mice: PS/2 mouse device common for all mice

I'm pretty sure Fedora doesn't patch any input code, so I wonder
if some change was made here that could cause this?