I'm running UBUNTU 12.04 LTS Live CD and the backlight doesn't work.  I
have a Toshiba A665-s6057 which normally doesnt come with a backlight
KB, but it works under Windows 7.

I have some info that might be of interest and possibly the source of
confusion.

The service manual for the A660 series shows a bit called KBLED.  It
does not, however, tell you what the bit does.

My belief is that the Satellite Logo can be turned on and off and the KB
Illumination can be turned On and Off.

It appears that when a backlit KB is detected, the illumination settings
appear in the BIOS options.

Toshiba typically does a On/Off or Timed off when you hit a key.

In Windows the touch bar at the top of the keyboard can be completely
illuminated or turned off as it is in UBUNTU,  I ran Win 7 with the
touch bar illuminated.  In windows, if you touched, say the wireless
button on the touch bar, the wireless button would go off briefly and
then return to being on again.

Dunno, if the touch bar and Function events involk the same scan code.

ECO is a mode I really never played with in Windows.

I believe the keyboard Illumination comes on briefly when the laptop is
booted from a powered down state.

I'm not in a position to check Win 7 behavior at this point in time.  If
I remember correctly the behavior of the KB can be set via the BIOS or
through a Toshiba provided control panel.  Thus there is likely more
than one bit that defines the keyboard illumination behavior.

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Title:
  [keymap] Toshiba satellite A660: backlight key does not work

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