Messages in this thread | | | Date | Fri, 26 Feb 1999 22:48:08 -0600 (CST) | From | "Andre M. Hedrick" <> | Subject | Re: UDMA causing kernel to crash? |
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On Fri, 26 Feb 1999 MIKE_ST@iah.com wrote:
> Here is a wierd one for you; > > I have a DFI P5BV3+ motherboard with a Apollo Via chipset and a K6/2-350 > CPU. The machine currently has 256Meg memory. > > I have a WD Caviar UDMA 4.3gb and a Fujitsu 4.3gb UDMA drive and both show
Skip setting CONFIG_AUTODMA and try again. Success?? Then split the drives if paired and correct /etc/fstab for new mount points, then call ide0=dma and ide1=dma with two different boot-ups. Success?? Call them togather. Success?? Now enable setting CONFIG_AUTODMA and try again. Success??
If all of these are working combinations, then your drives don't play well togather and there are timing errors.
> up as UDMA drives as the system boots up, but the moment the system tries > to mount the file systems, I get a real fatal error and have to cold > reboot the system. The error is: > > > > Unable to handle kernel NULL pointer dereference at virtual address 00000018 > current:>tss.cr3 > > There is quite a lot more info on the screen but mostly register dumps and > stack info. > > The version of kernel is 2.1.1 and there is an adaptec FDomain SCSI in addition > to the IDE's which is connected to s DAT tape drive - no disks on scsi. > When I switch the UDMA to disabled on the bios for the IDE controller, Every- > thing seems to work fine.
FUJITSU MPC3043AT and MVP3 (via-chipset) don't do UDMA regardless. The "C" version of the firmware on this drive size only in combination with a VIA based mainboard only cause known problems. This is even under Win95/98.
Andre Hedrick The Linux IDE guy -- http://www.dyer.vanderbilt.edu/server/udma/
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