Upgraded Dapper today - DVD drive no longer reads DVDs!

[Alex Mandel]

Sean Hammond wrote:
> Has anyone else encountered this? Any help?
> 
> I just updated a friends Dapper laptop, getting the latest packages,
> in an attempt to fix a problem where DVD movies had saturated colours.
> After the update, the laptop no longer reads DVDs! Which is pretty
> bad.
> 
> DVDs are not automounted when you insert them, and if I go to Computer
> and click on the CD/DVD drive and click mount, or if I use the mount
> command, it reports: No medium found.
> 
> I have tried this with a DVD movie which was working fine a couple of
> days ago, before todays update.
> 
> CDs are still fine - they automount and work as normal.
> 
> I filed a bug report with more info here:
> 
> https://launchpad.net/distros/ubuntu/+bug/61456
> 
I had a problem similar to this, Audio CD's simply stopped loading but 
data and DVD were fine. I never figured out the root cause but you can 
try my solution.

Uninstall hal
Reinstall hal

Don't reboot in between, I made that mistake once when I was a real 
newbie and spent a long time figuring out how to get my system to let me 
back on the internet so I could reinstall.
You probably needed a reboot after the reinstall of hal though.

Alex