Abit BP6 UDMA issues.

Bart Kus (kernel@ERTW.ca)
Thu, 12 Aug 1999 23:12:22 -0500 (CDT)


Hi, I hope you find this informative.

I recently bought an Abit BP6 and am trying to get my drives
working with it at UDMA(33) speeds. I keep on getting these errors:

hdb: timeout waiting for DMA
hdb: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
hda: DMA disabled
hdb: DMA disabled
ide0: reset: success

whenever I try to write large amounts of data to /dev/hdb.

Here are some "interesting" clippings of boot sequences and other things.

(from dmesg)
hda: ST36450A, 6149MB w/448kB Cache, CHS=784/255/63, DMA
hdb: Maxtor 92048D8, 19531MB w/512kB Cache, CHS=39683/16/63, UDMA(33)
hdc: IBM-DJAA-31700, 1628MB w/96kB Cache, CHS=3308/16/63, DMA
hdd: ATAPI 24X CD-ROM drive, 128kB Cache, DMA

(from dmesg)
Partition check:
hda: hda1
hdb: hdb1
hdc:hdc: timeout waiting for DMA
hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
hdc: timeout waiting for DMA
hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
hdc: timeout waiting for DMA
hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
hdc: timeout waiting for DMA
hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
hdc: DMA disabled
hdd: DMA disabled
ide1: reset: success
[PTBL] [827/64/63] hdc1

(from hdparm -t /dev/hda)
/dev/hda:
Timing buffered disk reads: 32 MB in 3.73 seconds = 8.58 MB/sec

(from hdparm -t /dev/hdb)
/dev/hdb:
Timing buffered disk reads: 32 MB in 1.67 seconds =19.16 MB/sec

As you can tell, I bought /dev/hdb for SPEED :) It'd be nice to be able to
capture video to it. Make It Go(tm) ? :)

--Bart

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