system:
hdc: TDK CDRW321040B, ATAPI CD/DVD-ROM drive
Linux jojda 2.4.17 #1 Wed Mar 13 01:33:28 PST 2002 i686 unknown
debian unstable
the cdrom is a cd r/rw writer
problem:
when I try to rip the audio it doesn't work much (it works VERY
slowly, hours per songs) and I get the following messages in
/var/log/syslog:
Mar 29 00:47:12 localhost kernel: hdc: lost interrupt
what works:
reading raw cd using cat /dev/cdrom|od (it cannot read certain part of
CD but I guess that's the feature of filesystem)
reading data CDs, when I mount data CD I can read it to my heart
content (and more)
writing CD: so far I only tried to burn one data CD which worked
without any problems, CD is readable.
other info:
the same problem occurs with another CD-ROM drive and also when I
connect cdrom to ide0 (as slave, /dev/hdb). Hardrive connected to both
ide0 and ide1 works without any problems. I also tried to turn off dma
and 32 bit access, no change.
I don't see any IRQ conflict, ide1 is on 15, nothing else is on 15 (as
listed by BIOS and /proc/interrupts).
Is it possible that it's a HW problem considering that data cd reading
and buring works? I mean those use IRQs too (and I see the numbers
rising when I read data CD and cat /proc/interrupts). Could it be some
kernel problem? I mean how could the interrupt be lost when trying to
read audio but not when reading data? I don't really know what the
difference is, anybody can shed some light on this?