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Old 11-18-2006, 12:39 AM   #1
ttnunam
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CD-Rom drive won't open any more when logged into FC6


Everything was working well, then I needed to install something so I tried opening my CD-ROM drive (DVD-RW if it matters) and it won't open. It opens and works before linux loads up, but I don't even get a power light once I'm in Fedora.

Last time I remember it working was when I had a different kernel version. Would this matter? Also, in KInfoCenter it does say I have a CD-ROM, labled hdf. If I navigate to /dev/ and there is indeed an hdf. mount /dev/hdf /mnt/somdirectory just hangs. "mount /mnt/cdrom" gives me:

Code:
mount: can't find /mnt/cdrom in /etc/fstab or /etc/mtab
Any ideas?
 
Old 11-18-2006, 12:54 AM   #2
Simon Bridge
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Check that /media/cdrom is there... the command should be

# mount /dev/hdf -t iso9668 /media/cdrom

Your error is understandable, /mnt/cdrom is not in /etc/fstab nor in /etc/mtab. It isn't expected to be since it is a directory rather than a block special file.

You probably should check /etc/fstab to see that /dev/hdf is actually present.
Also check dmesg for anything relating to hdf: dmesg | grep hdf (for eg).
 
Old 11-18-2006, 02:45 PM   #3
ttnunam
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I tried these commands and it hung on the last one. I made the directory /mnt/cdrom.

Code:
[tnunamak@localhost ~]$ sudo mount /dev/hdf -t iso9668 /media/cdrom
Password:
mount: mount point /media/cdrom does not exist
[tnunamak@localhost ~]$ sudo mount /dev/hdf -t iso9668 /mnt/cdrom
mount: unknown filesystem type 'iso9668'
mount: maybe you meant 'iso9660'?
[tnunamak@localhost ~]$ sudo mount /dev/hdf -t iso9660 /mnt/cdrom
 
Old 11-19-2006, 01:59 AM   #4
Simon Bridge
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Drat - typo! Yes, I meant iso9660

Anyhow - when the mount hangs, try ps from a different terminal and see what it says about the mount process. Could be in uninterruptable sleep ... sometimes a sign of a device driver working with bad hardware. (Have you checked the drive out on another system since you started having trouble?)

You should also check the syslog for messages about it - "dmesg | grep hdf" Check fstab for the line about hdf too.
 
Old 12-10-2006, 08:04 PM   #5
ttnunam
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The drive works perfectly in windows, and it's less than two years old with very light use... should be ok.

The error message I get when I run that line is using dmesg is:

Code:
    ide2: BM-DMA at 0x9000-0x9007, BIOS settings: hde:pio, hdf:pio
hdf: SONY DVD RW DW-U18A, ATAPI CD/DVD-ROM drive
hdf: ATAPI 40X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)
hdf: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recov                                                                            er by ending request.
hdf: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recov                                                                            er by ending request.
hdf: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recov                                                                            er by ending request.
hdf: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recov                                                                            er by ending request.
hdf: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recov                                                                            er by ending request.
hdf: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recov                                                                            er by ending request.
hdf: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recov                                                                            er by ending request.
hdf: status error: status=0x58 { DriveReady SeekComplete DataRequest }
hdf: drive not ready for command
hdf: irq timeout: status=0xd0 { Busy }
hdf: DMA disabled
hdf: ATAPI reset complete
hdf: irq timeout: status=0xc0 { Busy }
hdf: ATAPI reset timed-out, status=0x80
hdf: status timeout: status=0x80 { Busy }
hdf: drive not ready for command
 
Old 12-11-2006, 02:26 AM   #6
Simon Bridge
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Quote:
The drive appears confused (ireason = 0x01).
ASUS motherboard?

Sometimes this is an irq sharing issue - sometimes, hardware failing.
There's a big discussion on LQ:
http://www.linuxquestions.org/questi...d.php?t=499811
 
Old 12-23-2006, 08:57 PM   #7
ttnunam
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Gigabyte actually, GA-965P. It's less than 3 months old, and I would be suprised to find that it's a hardware issue.
 
Old 05-26-2007, 08:55 PM   #8
Andersonian
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I have the same motherboard - Gigabyte GA-965P-S3. Also a Core2Duo E6600. kernel 2.6.18-4-amd64 SMP. A Sony DVD-RW.
When the drive is emply, the dmesg | tail reveals stuff like
Code:
ide: failed opcode was: unknown
hda: status error: status=0x50 { DriveReady SeekComplete }
ide: failed opcode was: unknown
hda: ATAPI reset complete
hda: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hda: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hda: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hda: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hda: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hda: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
I can't tell how often these errors occur. It works fine: ejects and plays stuff properly. For some reason though it likes to switch out of DMA mode once in a while.
Right now, hdparm /dev/hda returns:
Code:
/dev/hda:
 IO_support    =  0 (default 16-bit)
 unmaskirq     =  0 (off)
 using_dma     =  0 (off)
 keepsettings  =  0 (off)
 readonly      =  0 (off)
 readahead     = 256 (on)
 HDIO_GETGEO failed: Inappropriate ioctl for device
Disregarding other issues, I would say this has not affected my system.

Last edited by Andersonian; 05-28-2007 at 06:48 AM.
 
Old 05-27-2007, 08:11 AM   #9
Simon Bridge
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Well... there is always "ide=nodma" on the kernel line in menu.lst ... also trying noacpi and noapic. This is looking at these other errors. However, I should stress that this sort of thing can also result from dud hardware. Even a new mobo can be a dud.
 
  


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