Odd dmesg output

[mad_oracle]

Howdy, got a problem I am hoping someone can help me with.

I am running the following kernel: Linux (none) 2.6.15-1-amd64-k8 #2 Mon Mar 20 11:13:14 UTC 2006 x86_64 GNU/Linux

I don't have any problems playing CDs (haven't tried DVDs, but gxine detected the DVD player) but in my DMESG log I get the following error message repeatedly (it fills the log):

ATAPI device hdc:
Error: Not ready -- (Sense key=0x02)
Incompatible medium installed -- (asc=0x30, ascq=0x00)
The failed "Read Cd/Dvd Capacity" packet command was:
"25 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 "

Any advice?

[antidrugue]

Have you noted anything abnormal?

Is your CDROM light busy when it doesn't have to be?

DMA is on? What does "hdparm" think of your drive?

hdparm -vi /dev/hdc

Everything works normally?

[mad_oracle]

I have noticed that if there is a CD in the drive, this message doesn't come up at all. Everything SEEMS to be working normally though, as far as I have been able to determine. And here is what I get when I ran hdparm:

(none):/etc/kismet# hdparm -vi /dev/hdc

/dev/hdc:
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 HDIO_GETGEO failed: Invalid argument

 Model=TSSTcorpCD/DVDW TS-L532M, FwRev=HR08, SerialNo=Y544504735
 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
 RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=2048kB, MaxMultSect=0
 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4
 DMA modes:  sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
 AdvancedPM=no
 Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1:  ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7

 * signifies the current active mode

The light isn't on or anything with nothing in the drive, so I really have no idea what's causing this.

[antidrugue]

I have noticed that if there is a CD in the drive, this message doesn't come up at all. Everything SEEMS to be working normally though, as far as I have been able to determine.

Then let's keep it that way for now.

Maybe you can test the drive in every situations (cd read, write, dvd read, write, etc.).

If you find a specific symptom than we'll try something. For now it just looks like a little ATAPI crazyness. (ATAPI interface in the Linux kernel is not perfect, you may notice some occasionnal gliches.)

[spencerf]

maybe you have the automount set in your /etc/fstab this would cause the problem because you don't need to mount cd's to play them and in fact linux (to my knowledge) can't really mount cd/audio filesystems. So try turning off automount or don't worry about message. Or when you use a audio-cd. just

as root

umount /dev/hdc