* no dma support dvd-rom toughbook cf-y5 ata_piix
@ 2009-06-11 6:08 Colin Williams
2009-06-12 6:54 ` Robert Hancock
0 siblings, 1 reply; 2+ messages in thread
From: Colin Williams @ 2009-06-11 6:08 UTC (permalink / raw)
To: linux-ide
I filed a bug on ubuntu launchpad
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/357531.
Is it indeed a bug? Is their some kind of module flag or patch? Is their
a way to enable dma on my dvd-rom? I'd love to watch dvd's on my laptop
can one of module developers give me some insight?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: no dma support dvd-rom toughbook cf-y5 ata_piix
2009-06-11 6:08 no dma support dvd-rom toughbook cf-y5 ata_piix Colin Williams
@ 2009-06-12 6:54 ` Robert Hancock
0 siblings, 0 replies; 2+ messages in thread
From: Robert Hancock @ 2009-06-12 6:54 UTC (permalink / raw)
To: discord; +Cc: linux-ide
On 06/11/2009 12:08 AM, Colin Williams wrote:
> I filed a bug on ubuntu launchpad
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/357531.
>
> Is it indeed a bug? Is their some kind of module flag or patch? Is their
> a way to enable dma on my dvd-rom? I'd love to watch dvd's on my laptop
> can one of module developers give me some insight?
Doesn't look like the DVD-ROM is connected via PATA or SATA, looks like
it's actually connected via a USB connection internally? That seems a
bit bizarre.. Can you do a lsusb to verify if that's the case?
If it is, then the kernel doesn't have any control over the DMA state of
the drive, as that's purely under control of the USB-to-ATA bridge chip
they're presumably using.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-06-12 6:54 ` Robert Hancock
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