Re: 2.2.4: Problems writing CDs (ide-scsi emulation, CRW-1622)

Christoph Lameter (christoph@lameter.com)
Tue, 23 Mar 1999 22:36:46 -0800 (PST)


Ok. I did what you suggested. Did not work. My log on bootup says:

VP_IDE: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0x6000-0x6007, BIOS settings: hda:pio, hdb:pio
ide0: VIA Bus-Master (U)DMA Timing Config Success
ide1: BM-DMA at 0x6008-0x600f, BIOS settings: hdc:pio, hdd:pio
ide1: VIA Bus-Master (U)DMA Timing Config Success
hda: Maxtor 87000D8, ATA DISK drive
hdb: probing with STATUS(0x00) instead of ALTSTATUS(0x50)
hdb: probing with STATUS(0x00) instead of ALTSTATUS(0x50)
hdc: Memorex CRW-1622, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: Maxtor 87000D8, 6679MB w/256kB Cache, CHS=851/255/63

thus idedma is not enabled on bootup. I enable it later with

hdparm -m16 -d1 -u1 -c3 -W1 -k1 -K1 /dev/hda

but do not do anything for /dev/hdc which is on a different controller.

Even if this would be a problem then the ide driver would reset and
disable DMA and thus the next attempt should work. It aint.

On Tue, 23 Mar 1999, Andre M. Hedrick wrote:

> Let me guess::
> Under 2.0.35 you do not have DMA support for your CD-RW, correct?
Correct. Neither under 2.2.4

> Now you have DMA support for your CD-RW, correct?
Never tried DMA with CDRW

> Try a recompile and dissable CONFIG_IDEDMA_AUTO option.
> Add to your append line in /etc/lilo.conf
>
> append="ide0=dma"
>
> Then, let us know if that fixes the problem.
It does not.

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