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Paul DeShaw 03-23-2010 02:54 AM

Filed bug #544772: Optical drive not recognized

I filed a bug in Launchpad describing problems with my HP optical drive that stopped being recognized upon upgrading to Karmic.* I am hoping this way to encourage that this very basic functionality be returned in Lucid.* If you can contribute to a solution, please do so in Launchpad.

I am not much of a techie, so my description of the problem is probably lacking needed information.* Here is the text:


I have an HP dvd840 CD/DVD burner which worked in previous versions.
This drive will work to boot a live CD; if I boot generic Ubuntu Karmic
from a USB key I can use the drive normally for playback. I did not
test it for burning.

From the menu, Places->cdrom0 produces a window with the error:
"Unable to mount cdrom0 Special device /dev/scd0 does not exist" I have
perused similar problems on the forums, asked on the Ubuntu Studio
list, and looked in Launchpad, so far nothing suggested has worked. I
have added modules to /etc/modules--I can't remember what else I tried.

In /etc/fstab, it's listed as

/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0

sudo lshw produces no reference to a CD or DVD ROM.

/etc/modules looks like:









I added the last 4 modules in response to suggestions for a fix.>>

Feel free to comment, especially in Launchpad.


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