From: Meelis Roos <mroos@linux.ee>
To: Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: Thinkpad X20 docking troubles - irq routing, USB strangeness
Date: Fri, 31 Jul 2009 00:10:50 +0300 (EEST) [thread overview]
Message-ID: <Pine.SOC.4.64.0907310007040.24315@math.ut.ee> (raw)
In-Reply-To: <Pine.SOC.4.64.0907302339550.23777@math.ut.ee>
> The first is irq-related. As soon as yenta driver discovers the
> additional ports, screaming irq happens and this shared irq is disabled.
> This documented in the dmesg below. This is my main problem, others may
> be secondary to it (at least the usb one).
One more data point: the behaviour seems to be consistent at least since
2.6.27 (the oldest sequential kernel I have around). I also have 2.6.21
laying around, this kernel did not support docking at all.
Another data point: starting the system without dock and later docking,
PCI devices in dock are not found and no yenta irq problems occur.
When docking, USB 4-port hub is found and works.
--
Meelis Roos (mroos@linux.ee)
prev parent reply other threads:[~2009-07-30 21:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-30 20:51 Meelis Roos
2009-07-30 21:10 ` Meelis Roos [this message]
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