As my topic says, since I update to kde 4.6 version (now I am on 4.8 since yesterday) I have again the same problem with k3b and with kde. My cd/dvd rom is not found by kde and k3b, in fact my devices notifier doesn't inform me when I put a cd/dvd inside and k3b always says me the same error:
-No optical drive found.
-K3b did not find any optical device in your system.

I also tried the k3b git version but there is the same problem. I have also an external usb cd/dvd rom and I have not problems with it. Is there any solution for this problem?

Thank to all, and forgive me for my bad english!

Please paste the output of "ls -la /dev/sr*". This is likely a permissions issue.

My device is not on /dev/sr* it on /dev/hda and this is the output:

root@darkstar:~# ls -la /dev/hda
brw-rw---- 1 root disk 3, 0 gen 29 09:55 /dev/hda

Please post the output of "solid-hardware query 'IS OpticalDrive'".

Also, does your system have either UDisks or HAL installed?

I have not response from that command! So my drive is not idenfified... I have both udisks and HAL installed. I kept HAL installed just becuause I still use guidance-power-manager but if I stop it I have the same problem!

If you run "solid-hardware list" is anything listed? You may need to ask the Slackware packagers to rebuild kdelibs to include support for UDisks/HAL.

I don't understand what problem I have got!

......
udi = '/org/freedesktop/UDisks/devices/hda'
......

I tried to mount a disk with udisks and i had not problems but if i run:

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root@darkstar:~# solid-hardware list details

i get this:

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udi = '/org/freedesktop/UDisks/devices/hda'
  parent = '/org/freedesktop/UDisks'  (string)
  vendor = ''  (string)
  product = 'MATSHITA DVD+/-RW UJ-857G'  (string)
  description = 'MATSHITA DVD+/-RW UJ-857G'  (string)
  Block.major = 3  (0x3)  (int)
  Block.minor = 0  (0x0)  (int)
  Block.device = '/dev/hda'  (string)
  StorageDrive.bus = 'Platform'  (0x5)  (enum)
  StorageDrive.driveType = 'HardDisk'  (0x0)  (enum)
  StorageDrive.removable = true  (bool)
  StorageDrive.hotpluggable = false  (bool)
  StorageDrive.inUse = false  (bool)
  StorageDrive.size = 3702456320  (0xdcaf0000)  (qulonglong)


it says me:

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.inUse = false

but why!??!

The key line here is:

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  StorageDrive.driveType = 'HardDisk'  (0x0)  (enum)

Therefore as far as Solid is concerned this is a hard disk - which matches with what UDev and the Kernel believe it to be as it is placed as /dev/hda.

Next thing: post the output of "mount" please.
I suspect your system also has it's main file system as /dev/hda (even though everything is pretty much seen as /dev/sd* these days) and that device is somehow being replaced with your optical drive - leading to the system being horribly confused.

Since I installed slackware on this laptop (about 3 years ago) my dvd reader is on /dev/hda. However I paste here the output of the mount action made with simple mount command and udisks

1)

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root@darkstar:~# mount /dev/hda /mnt/dvd/
mount: block device /dev/hda is write-protected, mounting read-only


2)

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root@darkstar:~# udisks --mount /dev/hda
Mounted /org/freedesktop/UDisks/devices/hda at /media/disk


Another strange thing is that I can't see nothing about my dvd reader when I insert a cd/dvd with the command tail -f /var/log/messages .I see all devices when i plug in them except my dvd reader.

In this case, I would recommend consulting the Slackware packagers, as they will need to adjust either the UDev rules they ship, or contact the UDisks developers in order to get this issue fixed.

Thank you for all! I will see what I can do..