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Bug#478317: marked as done (kernel: dma cannot be disabled by boot option)

Your message dated Tue, 8 Sep 2009 22:03:22 +0200
with message-id <20090908200322.GJ19152@inutil.org>
and subject line Re: kernel: dma cannot be disabled by boot option
has caused the Debian Bug report #478317,
regarding kernel: dma cannot be disabled by boot option
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
478317: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=478317
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: kernel
Severity: normal


My problem is, that dma cannot be diabled by boot prompt options. I understand,
that a simple ide=nodma does not work, as these options only work on drivers
included in the kernel, while ide_core is a module loaded from the initrd. 
Regarding the documentation, the boot option ide_core.ide=nodma should do the 
trick. However, it didnt work on my system.

Some background information: My system had a normal harddisk and I had no
problem installing etch (netinstall) on it. Then, I replaced the hard disk with 
an ide-to-sd converter and an sd-card (a flash disk) which cant handle dma. As a 
result, I was unable to boot the system, regardless of the boot option I tried 
(nodma ide=nodma ide0=nodma hda=nodma ide_core.ide=nodma, ...). The only way to 
disable dma on boot was to add an option to /etc/modprobe.d/ide and rebuild the 
initrd:

> echo 'options ide_core options="ide=nodma"' > /etc/modprobe.d/ide
> update-initramfs -u

Obviously, this isnt possible on a non-bootable system. So, I had to put the
working harddisk in the box again, boot, build the initrd and copy it to the sd
card. After that, the system runs fine.

I think this bug has been addressed many times for woody and sarge. I also found
similar bug reports for etch, however, without solution.

#475223: How to disable dma on the netinst CD Package: debian-installer
#442333: initramfs ignores ide lernel cmd line parameters Package: live-initramfs
#284425: debian-installer: A small improvement suggestion Package: rootskel

Regards,

Juergen Bausa


-- System Information:
Debian Release: 4.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-6-686
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)

--- End Message ---
--- Begin Message --- 
On Wed, Jul 29, 2009 at 07:11:36PM +0200, Moritz Muehlenhoff wrote:
> On Mon, Apr 28, 2008 at 09:04:54PM +0200, Juergen Bausa wrote:
> > Package: kernel
> > Severity: normal
> > 
> > 
> > My problem is, that dma cannot be diabled by boot prompt options. I understand,
> > that a simple ide=nodma does not work, as these options only work on drivers
> > included in the kernel, while ide_core is a module loaded from the initrd. 
> > Regarding the documentation, the boot option ide_core.ide=nodma should do the 
> > trick. However, it didnt work on my system.
> 
> Did you upgrade to Lenny? If so, did it work?

No further feedback, closing the bug. Please reopen if the
problem persists.
 
Cheers,
        Moritz

--- End Message ---
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