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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - backlight switches off when starting X - since kernel-3.13"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=75917#c3">Comment # 3</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - backlight switches off when starting X - since kernel-3.13"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=75917">bug 75917</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>Does disabling runpm help?  Boot with radeon.runpm=0 on the kernel command line
in grub.</pre>
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