Kernel Question
Jon Dixon
dixon.jon at gmail.com
Wed Dec 1 20:12:23 UTC 2004
I caught another mail thread about CD burning, which advised moving
S07hdparm to run later.
This appears to be working.
Most modern drives should have no issues with DMA, but I agree that a
lot of people try linux on some often nostalgic kit.
Appreciate knowing why that option was chosen.
- Jon
On Wed, 1 Dec 2004 10:36:43 -0800, Matt Zimmerman <mdz at canonical.com> wrote:
> On Wed, Nov 24, 2004 at 10:04:49PM +0000, Jon Dixon wrote:
>
> > Since using Hoary, I noticed that the DMA for my DVD/CD-RW was not
> > enabled by default.
> >
> > Editing /etc/hdparm.conf to enable the DMA results in a message stating
> > that /dev/hdc doesn't exit, yet it obviously does.
>
> Perhaps it doesn't exist until later in the boot process in your case?
>
> > The I recalled a setting in the kernel config, so I took a look and found:
> >
> > CONFIG_IDEDMA_ONLYDISK=y
> >
> > As I didn't need to play with DMA in Warty, is this something that was
> > introduced?
>
> Yes. Too many CD-ROM devices simply fail to work correctly when DMA is
> enabled, and this causes many users to be unable to even install Ubuntu, so
> it is disabled by default.
>
> --
> - mdz
>
> --
>
>
> ubuntu-users mailing list
> ubuntu-users at lists.ubuntu.com
> http://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>
More information about the ubuntu-users
mailing list