Bug#306634: kernel: Cannot set DMA on any disk (HDs or CD-drives)

[maximilian attems <debian@sternwelten.at>]

tags 306634 moreinfo
thanks

On Wed, 27 Apr 2005, Sebastien Delafond wrote:

> Package: kernel
> Severity: important
> 
> 
> I cannot use hdparm to set DMA on any of my disks; when I try, I get
> the following message:
> 
>    ~ # hdparm -d 1 /dev/hda
>    /dev/hda:
>    setting using_dma to 1 (on)
>    HDIO_SET_DMA failed: Operation not permitted
>    using_dma    =  0 (off)
> 
> (Here I take /dev/hda as an exampel, but I get the same exact behavior
> with my other HD /dev/hdb, or with my DVD drive /dev/hdc).
> 
> This has happened with all the kernel-image-2.6.11-686-smp packages
> since 2.6.11 got into unstable. It doesn't work either with any
> kernel-image-2.6.10-686-smp > 2.6.10-3 (I know it worked with either
> -1 or -2, but cannot be more precise because snapshot.debian.net
> doesn't have any kernel-image-2.6.10-686-smp < 2.6.10-3).
> 
> It works fine with kernel-image-2.6.9-686-smp, or with
> kernel-image-2.4.27-686-smp.
> 
> I seem to have all the right modules loaded:
> 
>   piix                   10852  0 [permanent]
>   ide_core              132476  4 piix,ide_cd,ide_disk,ide_generic
>   ata_piix                9828  3 
>   libata                 49124  1 ata_piix
> 
> I am attaching lspci and dmesg output from this
> kernel-image-2.6.11-686-smp 2.6.11-3. Please let me know if you'd like
> lspci/dmesg from some other kernel(s) as well, or any additional info,
> and I'll be happy to provide it.
> 
> Thanks a lot,
> 
> --Seb

please send in also working dmesg of kernel 2.6.9?

--
maks