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SubjectRe: ide-cdrom / atapi burning bug - 2.6.1
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On Sat, 2004-01-31 at 11:32, Jens Axboe wrote:
> On Sat, Jan 31 2004, Mans Matulewicz wrote:
> > On Sat, 2004-01-31 at 11:20, Jens Axboe wrote:
> > > On Sat, Jan 31 2004, Mans Matulewicz wrote:
> > > > On Sat, 2004-01-31 at 10:34, Jens Axboe wrote:
> > > > > On Sat, Jan 31 2004, Mans Matulewicz wrote:
> > > > > > Hi,
> > > > > > After replacing my 2.4.22 with a 2.6.1 kernel I tried ATAPI cd burning.
> > > > > > This totally fails. Most of the CD's are corrupt and my system totally
> > > > > > locks up when erasing an cdrw (reset button was the option I needed to
> > > > > > reboot my system) . k3b reports cd is completely burned but fails are
> > > > > > not identical or totally unreadable. I tried it both with an tainted
> > > > > > (nvidia) and an untainted (nv) kernel: same results. With ide-scsi
> > > > > > burning in 2.4.x I had no problems.
> > > > >
> > > > > Did you use DMA in 2.4 as well? Does 2.6 work if you turn it off? It's
> > > > > most likely an issue with your via adapter.
> > > >
> > > > I used DMA in 2.4.
> > > >
> > > > I tried without dma on but it still totally locks my system while
> > > > erasing an rw.
> > >
> > > Do you really have an SMP box, or are you just using an SMP kernel? If
> > > you have SMP, it would be interesting to enable the nmi watchdog (if it
> > > works on your system).
> > >
> > > Are you using preempt?
> >
> > Its just an smp kernel. I only have one cpu.
> >
> > Preempt is enabled in kernel
>
> Could you try disabling preempt?

That worked.
preempt= off
dma was on

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