failed "Read Cd/Dvd Capacity" FC4 on a HP Pav8000

evans0409 · 10-08-2005, 03:32 PM

Hi,

I run FC4 on an HP Pavilion zd8230us with kernel 2.6.13-1.1526_FC4smp
My CD/DVD device is TSSTcorpCD/DVDW TS-L532M, ATAPI CD/DVD-ROM drive
from dmesg:

Code:

# dmesg | grep hdb
    ide0: BM-DMA at 0x3c40-0x3c47, BIOS settings: hda: DMA, hdb: DMA
hdb: TSSTcorpCD/DVDW TS-L532M, ATAPI CD/DVD-ROM drive
hdb: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, DMA

the problem is the (annoying) message:

Code:

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

was being written to /var/log/messages every 2 seconds and my disk never stops spinning!
This is a real stumper. Many-o-google search would turn up similar problems, never a solution. Plus, most of the related posts were 2.4 kernel and about 5 years old. Another problem is that most posts were related to burning and mounting errors (http://forums.fedoraforum.org/showth...280#post380280 , for example), but I only get errors when the drive is empty, otherwise it s fully functional! My initial work around was to keep a cd mounted in the drive! Elegant, eh? The second work around was to add

Code:

hbd=ide-scsi

to the end of the kernel line in /etc/grub.conf. This stopped the errors, but the kernel would then see 7 devices when using the drive and mount all seven. (Does anyone know what this is all about?)
Finally, after reading hundreds of posts, I got some hints that the problem was probably not kernel related, but rather it's likely that some naughty application is looking for media in the drive and causing a 5 line error message by the kernel every 2 seconds! (great design there) The posts said that magicdev or kscd were likely culprits, but neither are running on my system. After hunting and pecking, I found that killing the hald (haldaemon) stopped the errors altogether and my disk can finally get a break. No more hot plugging though, and hald is the one listening for that.
Help! I can't live without hald! As always, thanks in advance for your replies! More detals of my system can be found at http://www.humboldt.edu/~te8/misc/hpzd8230us.html

evans0409 · 10-08-2005, 05:06 PM

maybe someody could tell me if the hbd=ide-scsi multiple mounting issue is no big deal, and preferable to no hald?

also, is it strange that the CD/DVD device is assigned hdb and not hdc?

please!!!!

evans0409 · 10-09-2005, 09:58 PM

update, the hbd=ide-scsi fix does not work with the 2.6.13.1 kernel (smp)

No one can reply to this one? no one???

ccouto · 10-14-2005, 05:02 PM

Hi.

I'm having just the same problem on my hp pavilion dv 1359. For now I've only stopped halt, but I have noticed that even without running hald, the message is printed, but only twice. The first time the message is printed is always next to "Uniform CD-ROM driver Revision: 3.20" in the /var/log/dmesg. I don't have any ideas for now, but I thought maybe this could help "us" finding the cause of the problem. If you find any other solution please let me know. I will do the same.

Best regards,
ccouto

evans0409 · 10-14-2005, 05:50 PM

Hi,

I also noticed the early error, and though it was kernel related. Some posts at fedora.ugzilla by Alan Cox seemed to suggest that hal is the culprit. I have a newer solution, that does not totaly kill hal. you can read it at

http://www.humboldt.edu/~te8/misc/hpzd8230us.html

The bugzilla post is also linked there.