[Clfs-support] Limited recognition of DVD-ROM device

[Alonso Graterol]

amdsux,

   Thanks for the suggestion on checking udev version. I walked that path
already with no succes. Google was not helpful other than using hdparm...


Maarten,

   Your suggestion makes much sense for me. Chipset in motherboard is VIA
K8M800 + VT8237R. Both generic/default IDE chipset support and generic PCI
bus-master support are compiled into kernel. There is the VIA82CXXX chipset
support to load as module which lsmod shows as [permanent]. Kernel
2.6.22.6does not show additional VIA chipsets for ATA/ATAPI/MFM/RLL
support section.
   Although VIA site says there is support for VT8237 chips since earlier
kernels than 2.6.22.6 I cannot find a more specific option in kernel
configuration other than VIA82CXXX.
   Any idea how could I make a more appropriated ide controller selection?
   Thanks,

Alonso

2007/12/27, Maarten Lankhorst <mlankhorst at cross-lfs.org>:
>
> Alonso Graterol schreef:
> > "root at familia# hdparm -d1 /dev/hdb
> >
> > /dev/hdb:
> >  setting using_dma to 1 (on)
> >  HDIO_SET_DMA failed: Operation not permitted
> >  using_dma     =  0 (off)"
> >
>
> My bet is on forgetting to select the appropiate ide controller, so it
> falls back to ide-generic which doesn't support dma.
>
> -Maarten
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