[CentOS] DMA disabled on SATA disk with Core Duo/i955 machine (Inspiron 6400)

[first last]

--- William Warren <hescominsoon at emmanuelcomputerconsulting.com> wrote:

> interesting.  What server is this?  if you are getting tons of errors
> i 
> am willing to bet you have a hardware problem.  have you checked for
> an 
> updated bios?  Also try something like fedora 6 or opensuse and see
> if 
> the problems persist.

It's not a server, it's a brand new laptop (Inspiron 6400).

Ubuntu works perfectly on it, so that's what I'm using until I can get
CentOS working.

Just a minor annoyance and very understandable, considering that Ubuntu
was released a year later than CentOS 4.0.

Gabriel

> 
> first last wrote:
> > --- William Warren <hescominsoon at emmanuelcomputerconsulting.com>
> wrote:
> > 
> >> I hve a PE sc430 running sata drives.  transfer rates are jsut
> fine
> >> and 
> >> it show no DMA either.  I think the DMA transfers run just fine in
> >> sata 
> >> and do not need to be enabled by default.  Also some disk tools in
> >> linux 
> >> have not caught up to the sata revolution yet.  If your tests show
> >> low 
> >> transfers then you have an issue.  I have the type of transfers
> >> during 
> >> tests i expect so i think the tools are erroneously reporting dms
> off
> >>
> >> because they don't understand sata drives yet.
> >>
> > 
> > I get terrible data transfers and lots of errors while writing to
> the
> > disk.
> > 
> > Well, it seems that I will have to wait until CentOS 5 beta :)
> > 
> > Thanks
> > 
> > Gabriel
> > 
> >> first last wrote:
> >>> --- James Pearson <james-p at moving-picture.com> wrote:
> >>>
> >>>> On 23/10/06, first last <prelude_2_murder at yahoo.co.uk> wrote:
> >>>>> I am trying to use CentOS 4 on this machine and it does not
> allow
> >>>> me to
> >>>>> set DMA to 1, it just says that it is not possible. I have
> tried
> >>>>> updating to the latest release and it still won't work.
> >>>>>
> >>>>> I have searched for it on Google and there is a thread
> mentioning
> >>>> the
> >>>>> same machine and CentOS, but none of the solutions (-p, -X 12)
> >> seem
> >>>> to
> >>>>> work at all and there is no "it works!!!!!" message.
> >>>>>
> >>>>> Is there anyway I can get DMA working or will I have to wait
> for
> >>>> CentOS
> >>>>> 5? Will any of the "unsupported" kernels work? (I would try
> >>>> Ubuntu's
> >>>>> kernel on CentOS, as I am successfuly using that distribution,
> >> but
> >>>> it
> >>>>> is a bit stupid not to use SELinux and it probably wouldn't
> work
> >>>>> either).
> >>>> I don't think you can use hdparm on SATA disks?
> >>>>
> >>>> I know some BIOS's allow SATA disks to look like IDE 'legacy'
> >> drives
> >>>> (/dev/hdX) - if this is the case, then the OS may be using the
> >>>> generic
> >>>> IDE driver and it might not support DMA.
> >>>>
> >>>> If this is what you are seeing, then you might want to turn off
> >> the
> >>>> legacy or compatible mode in the BIOS and use the drives via
> >> /dev/sdX
> >>>> ...
> >>> I think this is the case, but there's no way to change the
> settings
> >> in
> >>> the BIOS (that's dell for you). Any way to force the system to
> use
> >> SATA
> >>> instead of P-ATA?
> >>>
> >>> Thanks
> >>>
> >>> Gabriel
> >>>
> >>>> James Pearson
> >>>> _______________________________________________
> >>>> CentOS mailing list
> >>>> CentOS at centos.org
> >>>> http://lists.centos.org/mailman/listinfo/centos
> >>>>
> >>>
> >>> Send instant messages to your online friends
> >> http://uk.messenger.yahoo.com 
> >>> _______________________________________________
> >>> CentOS mailing list
> >>> CentOS at centos.org
> >>> http://lists.centos.org/mailman/listinfo/centos
> >>>
> >>>
> >> -- 
> >> My "Foundation" verse:
> >> Isa 54:17  No weapon that is formed against thee shall prosper;
> and 
> >> every tongue that shall rise against thee in judgment thou shalt 
> >> condemn. This is the heritage of the servants of the LORD, and
> their 
> >> righteousness is of me, saith the LORD.
> >>
> >> -- carpe ductum -- "Grab the tape"
> >> CDTT (Certified Duct Tape Technician)
> >>
> >> Linux user #322099
> >> Machines:
> >> 206822
> >> 256638
> >> 276825
> >> http://counter.li.org/
> >> _______________________________________________
> >> CentOS mailing list
> >> CentOS at centos.org
> >> http://lists.centos.org/mailman/listinfo/centos
> >>
> > 
> > 
> > Send instant messages to your online friends
> http://uk.messenger.yahoo.com 
> > _______________________________________________
> > CentOS mailing list
> > CentOS at centos.org
> > http://lists.centos.org/mailman/listinfo/centos
> > 
> > 
> 
> -- 
> My "Foundation" verse:
> Isa 54:17  No weapon that is formed against thee shall prosper; and 
> every tongue that shall rise against thee in judgment thou shalt 
> condemn. This is the heritage of the servants of the LORD, and their 
> righteousness is of me, saith the LORD.
> 
> -- carpe ductum -- "Grab the tape"
> CDTT (Certified Duct Tape Technician)
> 
> Linux user #322099
> Machines:
> 206822
> 256638
> 276825
> http://counter.li.org/
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
> 


Send instant messages to your online friends http://uk.messenger.yahoo.com