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Re: How to fall back to PIO for IDE CD's?
> Can you elaborate on that part? I have
> cd0 at atapibus0 drive 0: <JLMS XJ-HD166S, , D3S4> cdrom removable
> in the SB2500 and something similar in the v210 but not sure I ever noticed
> problems (likely because I barely use CDs or DVDs nowadays).
> How to reproduce? Maybe we can fix it better in a different way?
I see the same on the V240. If I try to read a DVD with mplayer on the
V240 or SPARCle in -9, I'll see "error reading" messages and it will fall
back to DMA then PIO and work. In current, I just see the error messages
and can't read the DVD at all. Adding the flags to my current kernel
configuration to make aceride only use PIO means that I can read DVD's
but the hard disk now uses PIO as well. The dmesg there is:
aceride0 at pci0 dev 13 function 0: Acer Labs M5229 UDMA IDE Controller (rev. 0xc3)
atabus0 at aceride0 channel 0
atabus1 at aceride0 channel 1
wd0 at atabus0 drive 0
atapibus0 at atabus1: 2 targets
cd0 at atapibus0 drive 0: <TOSHIBA DVD-ROM SD-R2212, 234Q327001, 1013> cdrom removable
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