From: Folkert van Heusden <folkert@vanheusden.com>
To: Charles-Edouard Ruault <ce@ruault.com>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: [BUG] kernel 2.6.15.4: soft lockup detected on CPU#0!
Date: Thu, 16 Feb 2006 11:36:19 +0100 [thread overview]
Message-ID: <20060216103619.GI30182@vanheusden.com> (raw)
In-Reply-To: <43F44978.2050809@ruault.com>
> From what i understand it will fix the problem only if the drive is in
> PIO mode, which is the case for Folkert van Heusden, who reported the
> same BUG output.
> However it does not appear that my cdrom drives are using PIO, from the
> logs i have they're supposed to use DMA :
> >Feb 12 19:37:12 ruault kernel: hdc: ATAPI 40X CD-ROM CD-R/RW drive,2048kB Cache, DMA
> > Feb 12 19:37:12 ruault kernel: Uniform CD-ROM driver Revision: 3.20
> > Feb 12 19:37:12 ruault kernel: hdd: ATAPI 32X DVD-ROM DVD-R CD-R/RW
> > drive, 2048kB Cache, UDMA(33)
> sudo /sbin/hdparm -i /dev/hdc
> /dev/hdc:
> DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
Try /sbin/hdparm -d /dev/hdc
and see if it returns "using_dma = 1 (on)".
I noticed that altough -i says using dma, that -d tells me it really is
off.
Folkert van Heusden
--
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next prev parent reply other threads:[~2006-02-16 10:36 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-12 18:50 Charles-Edouard Ruault
2006-02-14 11:41 ` Folkert van Heusden
2006-02-14 16:32 ` Lee Revell
2006-02-15 15:07 ` Folkert van Heusden
2006-02-15 18:19 ` Lee Revell
2006-02-16 1:38 ` Alan Cox
2006-02-17 22:56 ` Lee Revell
2006-02-16 2:51 ` Andrew Morton
2006-02-16 9:44 ` Charles-Edouard Ruault
2006-02-16 10:36 ` Folkert van Heusden [this message]
2006-02-16 10:46 ` Andrew Morton
2006-02-16 11:18 ` Charles-Edouard Ruault
2006-02-16 12:57 ` Alan Cox
2006-02-16 13:33 ` Bartlomiej Zolnierkiewicz
2006-02-16 20:20 ` Andrew Morton
2006-02-17 11:47 ` Bartlomiej Zolnierkiewicz
2006-02-17 13:08 ` [patch] timer-irq-driven soft-watchdog, cleanups Ingo Molnar
2006-02-17 14:46 ` Bartlomiej Zolnierkiewicz
2006-02-17 19:52 ` Ingo Molnar
2006-02-17 20:11 ` Ingo Molnar
2006-02-17 22:15 ` Bartlomiej Zolnierkiewicz
2006-03-13 14:48 ` Charles-Edouard Ruault
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