IBM X206 DMA gondok

Adott egy IBM X206 tipusu gep, Debian sarge, a problema, hogy DMAt nem akarja szeretni egyik winyo se. Szakertoi tanacsra 2.4-es kernel upgradelve lett 2.6.12-2-re, de tovabbra sincs javulas.
Konfig:
2 pata, 4 sata winyo (masik problema lehet hogy a sata winyokat is hd*-vel jelzi)
kernelbe forgatott idevonatkozo dolgok:
Intel PIIXn chipsets support
Use PCI DMA by default when available
Generic PCI bus-master DMA support
PCI IDE chipset support
Sharing PCI IDE interrupts support
Biosban erre vonatkozo beallitasok jol vannak configolva.

hdparam hiba:
[code:1:21fd39b51e]
hdparm -d1 /dev/hdb1
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Invalid argument
using_dma = 0 (off)
[/code:1:21fd39b51e]

hdparm -t /dev/hdb ertekek 6.45 MB/sec es 11.69 MB/sec kozott mozognak.

lspci:
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0000:00:00.0 Host bridge: Intel Corp. 82875P Memory Controller Hub (rev 02)
0000:00:03.0 PCI bridge: Intel Corp. 82875P Processor to PCI to CSA
Bridge (rev 02)
0000:00:1c.0 PCI bridge: Intel Corp. 6300ESB 64-bit PCI-X Bridge (rev 02)
0000:00:1d.0 USB Controller: Intel Corp. 6300ESB USB Universal Host
Controller (rev 02)
0000:00:1d.1 USB Controller: Intel Corp. 6300ESB USB Universal Host
Controller (rev 02)
0000:00:1d.4 System peripheral: Intel Corp. 6300ESB Watchdog Timer (rev 02)
0000:00:1d.5 PIC: Intel Corp. 6300ESB I/O Advanced Programmable
Interrupt Controller (rev 02)
0000:00:1d.7 USB Controller: Intel Corp. 6300ESB USB2 Enhanced Host
Controller (rev 02)
0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev 0a)
0000:00:1f.0 ISA bridge: Intel Corp. 6300ESB LPC Interface Controller (rev 02)
0000:00:1f.2 IDE interface: Intel Corp. 6300ESB SATA Storage Controller (rev 02)
0000:00:1f.3 SMBus: Intel Corp. 6300ESB SMBus Controller (rev 02)
0000:02:01.0 Ethernet controller: Intel Corp. 82547GI Gigabit Ethernet
Controller
0000:03:04.0 SCSI storage controller: Adaptec AIC-7901 U320 (rev 10)
0000:04:02.0 VGA compatible controller: ATI Technologies Inc Radeon
RV100 QY [Radeon 7000/VE]
[/code:1:21fd39b51e]

dmesg:
[code:1:21fd39b51e]
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
Probing IDE interface ide0...
hda: Maxtor 6B200P0, ATA DISK drive
hdb: ST380011A, ATA DISK drive
Probing IDE interface ide1...
hdc: WDC WD1600JD-75HBB0, ATA DISK drive
hdd: Maxtor 6Y160M0, ATA DISK drive
...
TSC cannot be used as a timesource.
Possible reasons for this are:
You're running with Speedstep,
You don't have DMA enabled for your hard disk (see hdparm),
Incorrect TSC synchronization on an SMP system (see dmesg).
Falling back to a sane timesource now.
[/code:1:21fd39b51e]

Elore is koszi barminemu epito jellegu hozzaszolast/tanacsot!