[Nouveau] [Bug 31920] Brightness control is erratic (/sys/class/backlight/nv_backlight/max_brightness is wrong)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=31920

--- Comment #20 from Ben Skeggs <skeggsb at gmail.com> 2011-09-26 15:34:52 PDT ---
(In reply to comment #17)
> I just did a git pull, make clean, and recompiled the modules. My modules.dep
> file also shows that the extra/ directory is being used for nouveau modules. Is
> there anything else I must be doing? I'm quite sure that the stock ubuntu
> modules are being overriden.
> 
> I'm also attaching my dmesg and xorg.log to be sure :)

I'm afraid somehow you're still getting the old driver loaded.  The code in
nouveau git *cannot* report max_brightness of 1025 anymore, as evidenced by
this section of the patches linked above:

-       props.max_brightness = 1025;
+       props.max_brightness = 100;

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