[ltp] Display brightness

[Joerg Platte]

Hi,

sometimes when changing the brightness of my T40 the system load increases. 
This happens, because somehow the brightness levels stored in the CMOS and 
the EC are out of sync and the kernel prints thousands of warnings like the 
following one:

thinkpad_acpi: CMOS NVRAM (6) and EC (5) do not agree on display brightness 
level

Is it possible to print this warning only once or on each brightness change 
instead of printing it all the time until the values are back in sync? Or 
even better, is it possible to resolve this problem automatically in 
thinkpad_acpi? For example, when I'm changing the brightness to its maximum 
value then the warning disappears.

regards,
Jörg

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