[KLUG Hardware] Toshiba 1135-S155 Was "HP ze4220"

[Adam Tauno Williams]

> >Under REALLY high load audio, and such real time things fall apart.  DMA
> >support for this IDE chipset is clearly not 100% there yet,  but I'm
> >confident that this will resolve itself within a couple of kernel
> >releases as talk about this has taken place on the kernel mailling list.
> Well, I "fixed" DMA on my Toshiba laptop!  :-)
>  /dev/hda:
>  multcount    = 16 (on)
>  IO_support   =  1 (32-bit)
>  unmaskirq    =  1 (on)
>  using_dma    =  1 (on)
>  keepsettings =  1 (on)
>  readonly     =  0 (off)
>  readahead    =  8 (on)
>  geometry     = 4864/255/63, sectors = 78140160, start = 0
> It makes "scp" of large files (ISO images) over twice as fast.
> Oh, you probably want to know HOW I fixed it ...
> I installed the latest Redhat 8.0 kernel on Redhat 9!  :-)
>   [root@pc2w root]# uname -r
>   2.4.18-27.8.0
> And, much to my surprise, it did NOT break my CIPE VPN,
> or anything else that I've tried yet.

Interesting!

> So, it's not so much "the support is not 100% there yet", as
> DMA support is broken in the latest kernel for that chipset.

So I wonder if it will be fixed as an errata on 9?

> Hum, I wonder what the original RH9 kernel does...

I think I'm running the original 9 kernel.
Linux estate2.whitemice.org 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003
i686 i686 i386 GNU/Linux
I usually only upgrade kernels if there is a really compelling reason.