Messages in this thread | | | From | Mark Watts <> | Subject | Re: HDIO_SET_DMA failed on a Dell Latitude C400 Laptop | Date | Mon, 12 Jul 2004 14:22:00 +0100 |
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> I've just burnt a cd for the first time on a Dell Latitude C400 laptop and > I noticed that the system was quite sluggish while the burn was happening. > (mouse pointer erratic, window redraw slow etc). > > Remembering a similar issue with a desktop system, I did the following to > enable DMA on the hard drive (hdparm was giving ~3MB/sec read) > > # hdparm -c1 -d1 /dev/hda > > /dev/hda > setting 32-bit IO_support flag to 1 > setting using_dma to 1 (on) > HDIO_SET_DMA failed: Operation not permitted > IO_support = 1 (32-bit) > using_dma = 0 (off) > > > hdparm now reports ~7MB/sec which is better but still prety poor. > > > Any ideas why I couldn't set DMA on the drive? > > > CPU = Mobile Pentum 3 @1.2GHz (800MHz when booted with no power cord) > Ram = 256MB > HDD = IBM Travelstar (IC25N020ATDA04-0) 20GB > BIOS Rev = A12
Kernel is a 2.6.7 kernel...
- -- Mark Watts Senior Systems Engineer QinetiQ Trusted Information Management Trusted Solutions and Services group GPG Public Key ID: 455420ED
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