From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: Jim Paris <jim@jtan.com>
Cc: Thomas Drillich <th@drillich.com>,
linux-hotplug@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: ide dvd burner detected as ide-tape
Date: Thu, 9 Oct 2008 20:50:09 +0200 [thread overview]
Message-ID: <200810092050.09576.bzolnier@gmail.com> (raw)
In-Reply-To: <20081009183925.GA24460@psychosis.jim.sh>
On Thursday 09 October 2008, Jim Paris wrote:
> Bartlomiej Zolnierkiewicz wrote:
> > Thanks. Does the following patch help?
> >
> > From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> > Subject: [PATCH] ide: quirk for LG GH22LP20 DVD burner
> >
> > LG GH22LP20 DVD burner ("HL)DP-ST@V@-RAI CH22HP20") with firmware 1.00
> > reports 0x01 ("Sequential-access device") as the peripheral device type
> > instead of 0x05 ("CD-ROM device").
>
> That looks more like a hardware problem with a flakey bit.
> For example GH22LP20 with bit 2 always cleared = CH22HP20.
> DVD-ROM with bit 2 sometimes cleared = @V@-RAI.
> And the peripheral device type also has bit 2 cleared.
This would explain it nicely (I suspected something along these lines
but failed to see the actual pattern). After all it is very unlikely
to have _that_ broken firmware.
Thanks,
Bart
next prev parent reply other threads:[~2008-10-09 18:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200810010100.06299.th@drillich.com>
[not found] ` <200810031933.41994.bzolnier@gmail.com>
[not found] ` <200810041412.44162.th@drillich.com>
2008-10-08 19:25 ` ide dvd burner detected as ide-tape Bartlomiej Zolnierkiewicz
2008-10-09 14:43 ` Thomas Drillich
2008-10-09 18:13 ` Bartlomiej Zolnierkiewicz
2008-10-09 18:39 ` Jim Paris
2008-10-09 18:50 ` Bartlomiej Zolnierkiewicz [this message]
2008-10-12 22:18 ` Thomas Drillich
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