Bug#352972: linux-image-2.6.15-1-686: fail to use udma with intel
I dont know what exactly was the problem, but it is now fixed for me.
Anyway, thanks to the magic voodoo that helped me :-)
Here are the relevant commands I used between reboots.
vim /etc/modules # added piix near the top
aptitude install yaird
dpkg-reconfigure linux-image-2.6.15-1-686 # didnt select yaird
# complained about /dev/root which is "not a directory". Indeed:
# ls -l /dev/root shows a block device. But I was in single user mode. So
vim /etc/lilo.conf # check what happend : no idea. Changed default image
And here is relevent part of dmesg, which shows that ICH4 is now used
earlier in the boot process, leading to correct DMA settings :-)
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH4: IDE controller at PCI slot 0000:00:1f.1
ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 185
ICH4: chipset revision 1
ICH4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:DMA
Probing IDE interface ide0...
hda: ST360015A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdd: HL-DT-ST CD-ROM GCR-8520B, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 117231408 sectors (60022 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
hda: hda1 hda2 hda3 < hda5 hda6 hda7 >
I really dont like when things behave mysteriously while I dont understand
what's going on : it's too Micro$oftish. But this just happen to me :-/
Anyway, I hope it can help others.