linux-kernel - usb ports working only with pci=noacpi (bugzilla 94261)

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Message-ID: <mde9q9$9bh$1@ger.gmane.org>
Date:	Sat, 7 Mar 2015 08:36:27 +0100
From:	"Valerio Vanni" <valerio@...eriovanni.com>
To:	linux-kernel@...r.kernel.org
Cc:	acpi-support@...ts.sourceforge.net
Subject: usb ports working only with pci=noacpi (bugzilla 94261)

Here all details (dmesg, lspci etc):
https://bugzilla.kernel.org/show_bug.cgi?id=94261

The machine is:
LENOVO 90BX0018IX/Aptio CRB, BIOS O07KT49AUS 12/18/2014

OS is a Debian Wheezy amd64.

The issue is that USB ports work only starting the kernel with 
"pci=noacpi" parameter.
Without it, nothing plugged into usb ports is detected.
In particular, "lsusb" returns "unable to initialize libusb: -99".
The same happens with a 3.13.11 kernel (same config).

I've tried newer kernels (3.18.8, 3.19) and they show the same issue. With 
the difference that, with "pci=noacpi" they don't start at all.

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