From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Subject: Re: synaptics: PS/2 touchpad isn't detected if a keyboard key is
 held down on boot
Date: Sat, 7 Dec 2013 08:02:46 -0800
Message-ID: <20131207160246.GA11635@core.coreip.homeip.net>
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To: Andrey Moiseev <o2g.org.ru@gmail.com>
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On Sat, Dec 07, 2013 at 05:47:09PM +0400, Andrey Moiseev wrote:
> I inserted a printk into ps2_handle_response(struct ps2dev *ps2dev,
> unsigned char data) in "drivers/input/serio/libps2.c" and other
> functions in the file.
> It really eats scancodes from the keyboard, as I see (0x23 is the 'H'
> press scancode). Seems like the scancodes are mixed with reasonable
> values. Is it a bug in the controller? 

Not necessarily... Can you boot with i8042.debug=1 and post full dmesg?

Thanks.

-- 
Dmitry