linux-kernel - Re: [BUG] Loading parport_pc kills the keyboard if ACPI is enabled

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Date:	Thu, 04 Jun 2009 12:16:39 +0300
From:	Ozan Çağlayan <ozan@...dus.org.tr>
To:	linux-kernel <linux-kernel@...r.kernel.org>,
	alan@...rguk.ukuu.org.uk
Subject: Re: [BUG] Loading parport_pc kills the keyboard if ACPI is enabled

Ozan Çağlayan wrote On 04-06-2009 12:12:
> Hi,
>
> I was having this issue since 2.6.30_rc1 (if I remember correctly) but I
> didn't have time to analyze and report here until today.
>
> If I don't give acpi=off during boot, the keyboard becomes unusable when
> udev starts. The connection type of the keyboard don't matter at all, I
> tried with a USB and a PS/2 one.
>   

Note that the fact that the keyboard working when acpi=off seems to be
that udev don't probe parport* stuff in that case. I inserted parport by
hand and the keyboard is gone again as well:

[   30.696938] parport_pc 00:0d: reported by Plug and Play BIOS
[   30.697000] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
[   30.780388] lp0: using parport0 (interrupt-driven).
[   30.804130] ppdev: user-space parallel port driver
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