DVDRAM issues

[ml at bortal.de]

Hello List,

i am not sure if this is a Kernel issue, but we are having massive 
problems with writing to DVDRAM. Our DVD-Drive even becomes unuseable or 
disapears after a reboot.
In fact, we have already used 2 diffrent DVD-Writer (both LG GSA-4166B) 
and a few DVD-RAM Disks.

Let?s start what we have so far:
- Ubuntu 6.06 LTS
- DVD-Device: LG GSA-4166B Build Oct2005
- DVD-Media: DVD-RAM from Verbatim, 3x certified, 4,7GB
- Kernel 2.6.23.1 build with:
make oldconfig
make-kpkg clean
make-kpkg --initrd --revision=custom.1.0 kernel_image

base on the config attached.

I formatted the DVD-RAM with the command:
mkudffs --spartable=2 --media-type=dvdram /dev/hdc

 From the Boot-Dmesg:
-----------------------------------------------------------------------------------------
[ 29.544059] Probing IDE interface ide1...
[ 30.466904] hdc: HL-DT-STDVDRRW GSA-4166B, ATAPI CD/DVD-ROM drive
[ 30.826775] hdc: selected mode 0x44
[ 30.827056] ide1 at 0x170-0x177,0x376 on irq 15

 From the syslog:
-----------------------------------------------------------------------------------------
Nov 13 12:19:23 ubuntu kernel: [ 2377.061536] ATAPI device hdc:
Nov 13 12:19:23 ubuntu kernel: [ 2377.061544] Error: Illegal request -- 
(Sense key=0x05)
Nov 13 12:19:23 ubuntu kernel: [ 2377.061549] Illegal mode for this 
track or incompatible medium -- (asc=0x64, ascq=0x00)
Nov 13 12:19:23 ubuntu kernel: [ 2377.061584] The failed "Read 10" 
packet command was:
Nov 13 12:19:23 ubuntu kernel: [ 2377.061585] "28 00 00 00 01 b4 00 00 
01 00 00 00 00 00 00 00 "
Nov 13 12:19:23 ubuntu kernel: [ 2377.061608] end_request: I/O error, 
dev hdc, sector 1744
Nov 13 12:19:23 ubuntu kernel: [ 2377.062793] udf: udf_read_inode(ino 
436) failed !bh
Nov 13 12:19:28 ubuntu kernel: [ 2382.499313] hdc: command error: 
status=0x51 { DriveReady SeekComplete Error }
Nov 13 12:19:28 ubuntu kernel: [ 2382.499324] hdc: command error: 
error=0x50 { LastFailedSense=0x05 }
Nov 13 12:19:28 ubuntu kernel: [ 2382.499328] ide: failed opcode was: 
unknown

All we really do is to mount the drive to /tmp/mnt and write/read/delte 
files with rsync, rm, ls.

Attached files:
-----------------------------------------------------------------------------------------
- syslog
- dmesg
- (Kernel) config
(md5sum 27296f9f33915422fb63fbf70f7078c2 infos.tgz)



Has anyone an idea how i can get rid of those errors?

Thanks, Mario
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