ASUS KT266A/VT8233 board and UDMA setting

From: Dmitri Pogosyan (
Date: Thu Jan 03 2002 - 23:29:30 EST

Hi everybody,
sorry for the trivial question, but maybe you can give me some pointers.

I'm setting up Linux on ASUS A7V266-E board, Athlon XP 1800+ machine
have the following problem:

My new IBM 40GB hard drive on ide0 (alone, master) controller is
always get set at boot
 to UDMA2 mode, not UDMA5.
The second identical drive on onboard promise controller is getting set
to UDMA5
and runs much faster.

I looked in BIOS setup, and BIOS sets the first ide0 drive to UDMA5,
which at least says that
cable is the correct one, and that it is linux boot which changes the
setting to udma2.

Here are the related pieces of dmesg. As you see I use RH rawhide 2.4.16
kernel, which is
something like 2.4.17-pre8, I think

# dmesg
Linux version 2.4.16-0.13 ( (gcc
version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)) #1 Dec 14 05:30:28
EST 2001
Fri Local APIC disabled by BIOS -- reenabling.
Found and enabled local APIC!
Kernel command line: auto BOOT_IMAGE=linux-16 ro root=301
BOOT_FILE=/boot/vmlinuz-2.4.16-0.13 hdc=ide-scsi
ide_setup: hdc=ide-scsi
Initializing CPU#0
Detected 1544.511 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 3080.19 BogoMIPS
Memory: 1544904k/1572784k available (1560k kernel code, 27492k reserved,
316k data, 248k init, 655280k highmem)

PCI: PCI BIOS revision 2.10 entry at 0xf0df0, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
Unknown bridge resource 0: assuming transparent
PCI: Using IRQ router VIA [1106/3074] at 00:11.0
PCI: Found IRQ 11 for device 00:11.1
PCI: Sharing IRQ 11 with 01:00.0
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.15)
Starting kswapd
allocated 64 pages and 64 bhs reserved for the highmem bounces
VFS: Diskquotas version dquot_6.5.0 initialized
pty: 2048 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
Real Time Clock Driver v1.10e
block: 128 slots per queue, batch=32
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with
PDC20265: IDE controller on PCI bus 00 dev 30
PCI: Found IRQ 9 for device 00:06.0
PCI: Sharing IRQ 9 with 00:11.2
PCI: Sharing IRQ 9 with 00:11.3
PCI: Sharing IRQ 9 with 00:11.4
PDC20265: chipset revision 2
PDC20265: not 100% native mode: will probe irqs later
PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
    ide2: BM-DMA at 0xb000-0xb007, BIOS settings: hde:pio, hdf:DMA
    ide3: BM-DMA at 0xb008-0xb00f, BIOS settings: hdg:DMA, hdh:pio
VP_IDE: IDE controller on PCI bus 00 dev 89
PCI: Found IRQ 11 for device 00:11.1
PCI: Sharing IRQ 11 with 01:00.0
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt8233 (rev 00) IDE UDMA100 controller on pci00:11.1
    ide0: BM-DMA at 0xa400-0xa407, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xa408-0xa40f, BIOS settings: hdc:DMA, hdd:DMA
hda: IC35L040AVER07-0, ATA DISK drive
hdd: ASUS CD-S520/A, ATAPI CD/DVD-ROM drive
hdg: IC35L040AVER07-0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
ide3 at 0xb800-0xb807,0xb402 on irq 9
hda: 80418240 sectors (41174 MB) w/1916KiB Cache, CHS=5005/255/63,
UDMA(33) <---- problem
hdg: 80418240 sectors (41174 MB) w/1916KiB Cache, CHS=79780/16/63,
ide-floppy driver

Any clues ? As well, could somebody explain me, what exactly is the
device on IRQ 11 (00:11.1)

        Thank you very much, Dmitri

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This archive was generated by hypermail 2b29 : Mon Jan 07 2002 - 21:00:23 EST