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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - FirePro 2000M cannot control backlight"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=64860#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - FirePro 2000M cannot control backlight"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=64860">bug 64860</a>
              from <span class="vcard"><a class="email" href="mailto:agd5f@yahoo.com" title="Alex Deucher <agd5f@yahoo.com>"> <span class="fn">Alex Deucher</span></a>
</span></b>
        <pre>If the OEM used the integrated backlight controller in the GPU it should be
exposed via sysfs (there should be a radeon entry in /sys/class/backlight). 
You can use that interface to control the backlight.</pre>
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