Re: amd64 cdrom access locks system

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[ Jens added to cc: ]

On 6/13/05, Jeff Wiegley <[email protected]> wrote:
> Andrew Morton said I should carbon copy the IDE developer on this
> issue so I have in the hopes of re-opening this issue and making
> some progress since I'm still unable to write anything with my
> cd-burner.
> 
> Here's what I know to date:
> 
>     I have the alim15x3 IDE driver installed and running.
>     I do NOT have any of the generic IDE drivers installed or
>        even compiled as they grossly interfere with the alim15x3
>        and cause a kernel panic.
>     My hardware is an AMD64 FX55 in a Shuttle ST20G5 case with a
>        serial ATA harddrive.
>     I'm using a stock 2.6.12-rc6 kernel.
>     Debian unstable distribution.
> 
> At first I can read from the drive fine.
>     For instance I did two "cdparanoia -B -d /dev/hda" without
>     a hitch. Nothing was reported in /var/log/kernel as a result.
> 
> The problem is that I can't write to the drive (burn cds with
> cdrecord) with causing a lost interrupt and then nothing works;
> even reads don't respond.
> 
> When I do:
>     cdrecord -v -tao dev=ATAPI:/dev/hda something.iso
> 
> I get this output:
>    Cdrecord-Clone 2.01.01a01 (x86_64-unknown-linux-gnu) Copyright (C)
> 1995-2004 Joerg Schilling
>    NOTE: this version of cdrecord is an inofficial (modified) release of
> cdrecord
>          and thus may have bugs that are not present in the original
> version.
>          Please send bug reports and support requests to
> <[email protected]>.
>          The original author should not be bothered with problems of
> this version.
> 
>    cdrecord: Warning: Running on Linux-2.6.12-rc6-jw14
>    cdrecord: There are unsettled issues with Linux-2.5 and newer.
>    cdrecord: If you have unexpected problems, please try Linux-2.4 or
> Solaris.
>    TOC Type: 1 = CD-ROM
>    scsidev: 'ATAPI:/dev/hda'
>    devname: 'ATAPI:/dev/hda'
>    scsibus: -2 target: -2 lun: -2
>    Warning: Using ATA Packet interface.
>    Warning: The related Linux kernel interface code seems to be
> unmaintained.

^^^

>    Warning: There is absolutely NO DMA, operations thus are slow.

^^^

What is the result of using "dev=/dev/hda" interface instead
(as suggested by Robert)?

Bartlomiej
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