On Thu, Sep 20, 2001 at 08:19:43PM +0200, David Balazic wrote:
> I discovered some weird behavior in IDE interface handling.
> I some cases linux detects the ide1 channel , but not ide0.
> More precisely , it prints a line like :
>
> ide0: BM-DMA xxxxxx
>
> but that is it. Nothing else. No line of :
>
> ide0: at 0x0170 blah blah
>
> no drives on the channel are recognized.
> No ide0 entry in /proc/devices
> etc.
>
> ide1 and the devices on it are more or less OK. ( I didn't notice
> any problems, but it is hard to test if linux does not see the root
> fs on hda ! )
>
> I tested the redhat kernel-2.4.7-10 and vanilla linux 2.4.9.
>
> Hardware details :
> - MSI K7T Pro2A motherboard , BIOS v2.9 , VIA KT133 chipset, via 686b southbridge
> - hda is an IBM Deskstar 75GXP 45 GB hard drive ( DTLA-307045 ) ( 80-wire cable,
> cable-select , connected to the end of the cable, thus master )
> - hdb : none
> - hdc : Acer 1208A CD-RW drive ( cable select (master))
> - hdd : Teac CD532E-B CD-ROM ( cable select (slave)) 80-wire cable
>
> The way to trigger this is to set one of the IDE devices in BIOS to wrong geometry.
> Maybe it is a BIOS bug.
>
> I some cases I also got a weird line from linux :
> hd1: C/H/S=0/0/0 from BIOS ignored
>
> I thought that disk are enumerated by letter only, not numbers.
> ( it is H-D-one , not H-D-ell, in case you have a funny font )
Have you by any chance set "Use old disk-only driver on primary
interface" to yes? That would explain things ...
-- Vojtech Pavlik SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Sep 23 2001 - 21:00:39 EST