I can confirm this bug. I've been running Ubuntu on my L20 ever since
Feisty Fawn and updated every release since then and suspend has never
worked. It still doesn't work in Jaunty now.

Previously I've assumed it had something to do with the ATI linux
drivers and it was the graphics chip that prevented everything from
resuming, but after finding this bug report and re-reading it, I think
it might be something else.

The laptop suspends to RAM and the power light flashes slowly it is
should, but the laptop never awakens again. When you push the power
button to resume, the hard disk spins up briefly, the dvd drive makes a
noise (the same noise it makes during BIOS boot), and the CPU fan spins
up and keeps running. However, the screen never turns on and as far as I
can tell, the OS isn't running. I've tried running a music player,
suspending, and then resuming and pushing the hotkey to resume the
music, but nothing happens.

It doesn't seem like just a blank screen problem.

-- 
hibernate/resume not working on Toshiba L20-101
https://bugs.launchpad.net/bugs/180031
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