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Date: Thu, 12 Jun 2008 00:27:16 +0200
From: "Malte Cornils" <Malte.Cornils@gmx.net>
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Subject: Re: Lenovo ThinkCentre A55: parport_pc 00:0a: disabled;
  probe of	00:0a failed with error -22
To: linux-kernel@vger.kernel.org
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Sender: linux-kernel-owner@vger.kernel.org
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Hello again,

I wrote (yeah, why do I always find more info after posting?) minutes ago:
> dmesg says:
> [   40.935843] parport_pc 00:0a: disabled
> [   40.935850] parport_pc: probe of 00:0a failed with error -22
> 
> rmmod parport_pc ; modprobe parport_pc io=0x378 irq=none
> did not work either, the detection failed and echoing some bytes to
> the /dev/lp0 device fails, too.

attempting this, dmesg displays:
[  687.741109] parport 0x378 (WARNING): CTR: wrote 0x0c, read 0xff
[  687.741119] parport 0x378 (WARNING): DATA: wrote 0xaa, read 0xff
[  687.741122] parport 0x378: You gave this address, but there is probably no parallel port there!
[  687.741144] parport0: PC-style at 0x378 [PCSPP,TRISTATE]
[  687.838463] lp0: using parport0 (polling).


cat /sys/devices/pnp0/00:0a/resources
shows the resource as disabled. Even after
echo "auto" > ..resources
this remains so. 

> Something else:
> Lenovo provides a somewhat more recent BIOS[...]

Yeah - we finally were able to update the BIOS, unfortunately, it does not fix the bug.

Ok that's it for now,
again, I'd be happy for any pointers,
Yours
-Malte Cornils
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