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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Black screen with KMS on powerpc iBook"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90220#c4">Comment # 4</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Black screen with KMS on powerpc iBook"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90220">bug 90220</a>
              from <span class="vcard"><a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> <span class="fn">Michel Dänzer</span></a>
</span></b>
        <pre>This line in dmesg indicates a problem with the dot clock:

[drm:drm_calc_timestamping_constants] *ERROR* crtc 14: Can't calculate
constants, dotclock = 0!</pre>
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