You don't say how you installed MySql, but this message would appear to indicate that MySql is not running.
I've just installed ubuntu 10.04 and drupal 6.19 on an old compaq
Presario 2700 laptop
Ubuntu uses apache2
Installing Drupal I get an error, 'Web server does not appear to support
database types. check with hosting provider.'
I have mysql 5 installed and the database set up as is on my desktop.
Why the message, what am I missing please?
thanks
Roger
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