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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [r600g] Screensavers lock up machine (screen goes blank, keyboard unresponsive, sound loops; sysrq/ssh possible)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=65192#c4">Comment # 4</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [r600g] Screensavers lock up machine (screen goes blank, keyboard unresponsive, sound loops; sysrq/ssh possible)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=65192">bug 65192</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>(In reply to <a href="show_bug.cgi?id=65192#c3">comment #3</a>)
<span class="quote">> R600_HYPERZ=0 /usr/bin/xscreensaver-demo

> and switching between screensavers crashed as often as without R600_HYPERZ=0.</span >

Beware that AFAIK the screensaver hacks aren't spawned from the
xscreensaver-demo process but from the xscreensaver daemon process. Did you
confirm that the latter saw the environment variable?</pre>
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