[Bugme-janitors] [Bug 23472] 2.6.37-rc2 vs. 2.6.36 laptop backlight changes?

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=23472





--- Comment #21 from Patrick Schaaf <kernelorg at bof.de>  2010-11-28 18:04:47 ---
Created an attachment (id=38462)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=38462)
intel_panel switching backlight dimmer and dimmer

kernel messages from 2.6.37-rc2 with drm.debug=0x07, grepping for "backlight".

Starting with [  169.869343] I cycled from GDM login screen to text console and
back several times, without doing anything else in between.

As can be seen (and could be seen physically on the laptop screen) backlight is
set dimmer and dimmer with each cycle, until at [  579.977224] the value
underflowed somehow - things got a lot brighter at that point.

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