From: Robert Hancock <hancockrwd@gmail.com>
To: Zbigniew Luszpinski <zbiggy@o2.pl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: OHCI USB hangs during intensive use, nVidia MCP78S chipset, few questions to help me find the problem.
Date: Sat, 27 Jun 2009 11:27:58 -0600 [thread overview]
Message-ID: <4A46569E.2070501@gmail.com> (raw)
In-Reply-To: <200906271751.21418.zbiggy@o2.pl>
On 06/27/2009 09:51 AM, Zbigniew Luszpinski wrote:
> Hello,
>
> after upgrading my CPU from single core to multicore and mainboard I started
> to have problem with OHCI USB controller. It hangs during big data transfer
> (USB hdd drive, pendrive, IRDA dongle or adsl modem). The result of hang is
> usb device is not responding. This is the only error I found. I would like to
> learn why it hangs and fix it. I tried kernels 2.6.27-30 and most popular
> Linux distributions. Adding noapic or acpi=noirq parameter to kernel boot line
> almost workarounds the problem, disabling tickless kernel: CONFIG_NO_HZ also
> makes usb ohci hanging a little bit less. Usb 1.1 devices still hangs but
> seldom: only transferring over 100MiB file to/from usb hdd or downloading
> CentOS dvd iso from ftp or torrent can hang usb. I do not want to be left with
> workaround. I want to fix it. Can you tell me how to find the issue and where
> to look for faulty code? By looking at kernel parameters which cures the usb
> ohci bug it must be something wrong with IRQs.
Are you getting any kernel errors/messages in dmesg? In any case you
should post your dmesg output from bootup.
next prev parent reply other threads:[~2009-06-27 17:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-27 15:51 OHCI USB hangs during intensive use, nVidia MCP78S chipset, few questions to help me find the problem Zbigniew Luszpinski
2009-06-27 17:27 ` Robert Hancock [this message]
2009-06-28 0:38 ` Zbigniew Luszpinski
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