Invariable backlight at logon in Oneiric / Unity

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Upgrade (?Install?) to Oneiric / Unity 
2.
3.

What is the expected output? What do you see instead?
The real-world trouble is that, at boot, the display of the (new) logon screen 
in oneiric, the backlight is set to 'dim' and cannot be modified. At any higher 
daylight level, the logon screen is barely visible to invisible. Sometimes it 
is just impossible to log in. The samsung-backlight adjustment only kicks in 
*after* the login.

What version of the product are you using? On what operating system?
samsung-backlight 0.13.7~ppa3~loms~oneiric

Please provide any additional information below.
An ugly workaround - that I don't know how to achieve - would be if one could 
set the backlight to a 'high' level at boot; so that one can at least log in.

Original issue reported on code.google.com by udip...@gmail.com on 28 Nov 2011 at 3:55

[GoogleCodeExporter]

I can add a module parameter to set initial brightness
BTW, sorry for not responding so long

Original comment by SergeyK...@gmail.com on 20 Jan 2012 at 2:32

[GoogleCodeExporter]

Is this a question, suggestion?
If so, I'd say: "Yes, with great pleasure"
I don't know if it needs to be adjustable. If a user sets it to a
reasonable low level inside, (s)he might be unable to see anything in
the bright sunlight. (surprise-surprise)
One could ponder to pre-set it to something like 60-70% which would
result in an always visible brightness, under any circumstances, for
the logon screen.

Uwe

Original comment by udip...@gmail.com on 20 Jan 2012 at 5:55

[GoogleCodeExporter]

added parameter initbright=value, where value is initial brightness level (5-6 
would fit), please, test and report any issues

Original comment by SergeyK...@gmail.com on 1 Feb 2012 at 1:08

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please, note that oneiric introduces out-of-box samsung_laptop module that 
implements the same functionality (e.g. brightness, wifi, fan control) 

Original comment by SergeyK...@gmail.com on 1 Feb 2012 at 1:25

[GoogleCodeExporter]

Okay, removed all others and installed samsung-laptop (with a dash,
not an underscore).
Everything seems okay; how to try the version with an initial
backlight next?? (The samsung-laptop does not seem to have it - where
are the settings?)

Original comment by udip...@gmail.com on 7 Feb 2012 at 6:29

[GoogleCodeExporter]

Well, you have two options:
- use out-of-box samsung-laptop module and set initial brightness from init 
script (for example, rc.local)
- blacklist samsung-laptop module and install samsung_backlight from the 
supplied .deb on downloads page (see readme). I've added initbright module 
parameter, which you can specify in kernel boot command line. I think, the 
value initbright=5 would fit.

Original comment by SergeyK...@gmail.com on 7 Feb 2012 at 12:19