I am trying to disable DMA but I can't seem to find the correct parameter. I have disabled it in the BIOS but the kernel insists on reporting: "... BIOS settings: hda:DMA, hdb:pio" "... BIOS settings: hdc:DMA, hdd:DMA" I tried using "ide0=nodma ide1=nodma" as well as "hda=nodma hdc=nodma hdd=nodma" but none of these seem to work. When the computer boots, the BIOS does report all drives to be in PIO mode. On Saturday 07 December 2002 05:20, Fred A. Miller wrote:

On Friday 06 December 2002 7:59 pm, Alexandros Karypidis wrote:

...

Hello all,

I have a system which has been running SuSE 8.0 and would like to install 8.1. I have to install via the network, so I am trying to boot a system via the boot disks provided in SuSE 8.1. The system hangs at the point where the IDE subsystem is initialized. The last thing I see is:

[...] VP_IDE: chipset revision 6 VP_IDE: not 100% native mode: will probe irqs later VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci:00:07.1 VP_IDE: ATA-66/100 forced bit set (WARNING)!! ide0: BM-DMA at 0xc000-0xc007, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xc008-0xc00f, BIOS settings: hdc:pio, hdd:pio

Is this a known issue and is there a work-around?

There are 2 issues. First, it has a VIA chipset, which is problematic, the other is that a lot of people have reported that with ASUS and other MOBs using the VIA chipset, they have to disable DMA.

Fred

-- To err is human, but to forgive is beyond the scope of the Operating System... Αλέξανδρος Καρυπίδης Πανεπιστήμιο Θεσσαλίας Τμήμα Μηχ/κών Η/Υ, Τηλεπικοινωνιών & Δικτύων Alexandros Karypidis University of Thessaly Computer & Communications Engineering dept.