CDROM: hdc: lost interrupt (how to troubleshoot?)

[Erik Steffl <steffl@bigfoot.com>]

  when I try to rip the CD I get the following messages and the ripping
is VERY slow (few hours per one song):

Mar 24 04:10:09 localhost kernel: hdc: lost interrupt

  system:
    debian unstable, kernel 2.4.17
    cdrom (burner) /dev/hdc TDK CDRW321040B, ATAPI CD/DVD-ROM drive

jojda:/home/erik# cat /proc/interrupts 
           CPU0       
  0:     120626          XT-PIC  timer
  1:       1818          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  5:        436          XT-PIC  SoundBlaster
  8:          1          XT-PIC  rtc
  9:          0          XT-PIC  usb-uhci, usb-uhci
 10:        135          XT-PIC  eth1
 11:        963          XT-PIC  eth0
 12:      20591          XT-PIC  PS/2 Mouse
 14:      21722          XT-PIC  ide0
 15:      11763          XT-PIC  ide1
NMI:          0 
LOC:     120587 
ERR:          0

  the situation is the same regardless of whether I use scsi emulation
or not.

  what's even more strange is that after I try to rip the audio CD I
cannot mount the data CD anymore. I get the following message:

jojda:/home/erik# mount /dev/hdc /mnt/cd
/dev/hdc: Input/output error
mount: block device /dev/hdc is write-protected, mounting read-only
/dev/hdc: Input/output error
mount: you must specify the filesystem type
jojda:/home/erik# 

  if I specify file system type it complains again:

jojda:/home/erik# mount -t iso9660 /dev/hdc /mnt/cd
mount: block device /dev/hdc is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/hdc,
       or too many mounted file systems

  however if I try to mount it before I rip anything it works OK.

  any ideas? TIA

	erik


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