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    <body><span class="vcard"><a class="email" href="mailto:marco.mattiolo@hotmail.it" title="Marco <marco.mattiolo@hotmail.it>"> <span class="fn">Marco</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Radeon don't always appear in xrandr --listproviders"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=74692">bug 74692</a>
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           <td style="text-align:right;">CC</td>
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           <td>marco.mattiolo@hotmail.it
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Radeon don't always appear in xrandr --listproviders"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=74692#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Radeon don't always appear in xrandr --listproviders"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=74692">bug 74692</a>
              from <span class="vcard"><a class="email" href="mailto:marco.mattiolo@hotmail.it" title="Marco <marco.mattiolo@hotmail.it>"> <span class="fn">Marco</span></a>
</span></b>
        <pre>Hi, I'm seeing this same behaviour on my system:
so thank you for the restart-Xorg tip!

Here Debian testing on nvidia optimus laptop (see [1] Debian bug I've filed).

Relevant entries in Xorg.0.log:
[    21.061] removing GPU device 
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1 /dev/dri/card1
[    21.061] xf86: remove device 0 
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1
[    21.061] (II) NOUVEAU(G0): NVLeaveVT is called.
[    21.062] (II) NOUVEAU(G0): Closed GPU channel 0
[    21.062] (II) UnloadModule: "nouveau"

IMHO, bug is probably located outside ati driver, because of bug showing itself
both with nvidia and ati double card systems, so you should change the
"Driver/Radeon" component specification.
Just a clue, don't know if it's right!

Hope to help getting this fixed soon, for both ati and nvidia

Cheers,
Marco

[1] <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=758217">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=758217</a></pre>
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