[edlug] Mounting problems

[henry <HenryColes@xxx.xxx.xxx>]

I've just spent the last hour pulling my hair out trying to get my cdr working 
again on my gentoo box.

This drive has been running fine under gentoo for a while now, using a 2.6 
kernel without scsi emulation. One of my rare reboots into windows has just 
confirmed it's still working fine there.

It's been a month or two since i've tried to burn anything with it, and a lot 
of things have changed on the box since then. I run emerge -Dup world pretty 
regularly, unfortunately I don't usually pay too much attention to what gets 
upgraded. There's also been a kernel recompile since I last burnt anything.

The symptoms are as follows :-

Attempting to mount the drive or burn anything to it with k3b gives the 
message :-

"No Medium found"

I've tried several discs, all of which mount fine on the system's DVD drive. 
Sometimes when a disc is put in it will spin for several minutes before 
settling down. k3b will hang on startup if a blank cd is in the drive and has 
to be killed.

I did get one of the discs to mount just the once, but couldn't get it to do 
it again a couple of minutes later. Once mounted it seemed to work fine.

my fstab for the drive looks like this :-

/dev/cdroms/cdrom0      /mnt/cdrom      auto            user,noauto,ro 0 0

and hdparm -I /dev/cdroms/cdrom0 gives :-

ATAPI CD-ROM, with removable media
        Model Number:       Memorex Twelve MAXX 1032
        Serial Number:
        Firmware Revision:  LSX2
Standards:
        Likely used CD-ROM ATAPI-1
Configuration:
        DRQ response: 50us.
        Packet size: 12 bytes
Capabilities:
        LBA, IORDY(can be disabled)
        Buffer size: 1024.0kB
        DMA: sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
             Cycle time: min=120ns recommended=120ns
        PIO: pio0 pio1 pio2 pio3 pio4
             Cycle time: no flow control=120ns  IORDY flow control=120ns


I've tried turning off DMA with no joy (which once solved a similar problem 
for me on a windows box) but that's pretty much the only thing I can think to 
try.

Anyone got any suggestions?

Cheers


Henry



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