Date: Fri, 31 Dec 2004 17:35:00 +0100 From: Philip Nienhuis <[EMAIL PROTECTED]> Subject: Re: [LIB] dma
John Musielewicz wrote: > > Date: Tue, 28 Dec 2004 09:07:48 -0800 (PST) > From: John Musielewicz <[EMAIL PROTECTED]> > Subject: dma > > I was messing around with the kernel in linux v. 2.6.9 > and now when my libby 110CT boots it reports that my > hard drive isn't using dma. I have a 60GB toshiba > installed without overlay. I checked the kernel and I > have everything selected to use dma but I had the > intel driver installed for the hard drive but I don't > believe it uses that. does anyone know what driver I > should install? The drive is ok for speed without dma If you care to take a look on http://www.photoengineering.com/laptop/L100mm.pdf, (your own site isn't it) you'll see in Fig. 1-3 that the Libretto's internal HDD is on the 16 bit ISA bus. A 16 bit ISA bus doesn't support DMA :-( DMA is only possible on 32-bit PCI buses. FWIW, I usually select "Generic IDE" when compiling Linux kernels. > but it is too slow to play movies and I really like > watching them on the libby--it has such a nice screen. > I can get them to work but I have to reduce the > resolution and that sucks. Thanks for any help--I'd > really like to get this working!! DMA is supported on the cardbus slots (but then again I've read somewhere they use event polling rather than IRQ). In line with this, I've noticed faster I/O on the cardbus slots than on the internal HDD.... (but not much faster.) Using a cardbus CDRW/DVD combo (Freecom Traveler II+), DVD playback under Win2K on a L110 is a bit choppy but not so much that all fun is spoiled..... (save for the noise of the combo player). Philip
