From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jan Kandziora <jjj@gmx.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: additional serial ports on MS9830 board do not work (IRQ problems)
Date: Sun, 5 Sep 2010 23:35:04 +0100 [thread overview]
Message-ID: <20100905233504.5000a308@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <201009052009.09743.jjj@gmx.de>
> I tried the suggested option "irqpoll", but then the computer just freezes
> when I do "od /dev/ttyS0" and touch the screen. No kernel panic, just a hard
> freeze. I tried "acpi=noirq", "acpi=off" and disabling the APIC in the BIOS
> setup, too. None of these made the serial irq work.
I suspect you need a BIOS which has correct tables for IRQ routing.
> Can you give me any useful pointers what to try next? Kernel configuration is
> attached.
Vendor for BIOS update would be the obvious starting point.
next prev parent reply other threads:[~2010-09-05 22:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-05 18:09 Jan Kandziora
2010-09-05 22:35 ` Alan Cox [this message]
2010-09-06 21:28 ` Jan Kandziora
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