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<body><span class="vcard"><a class="email" href="mailto:alexdeucher@gmail.com" title="Alex Deucher <alexdeucher@gmail.com>"> <span class="fn">Alex Deucher</span></a>
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<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - Can't run without "nomodeset" on MacPro6,1 with two AMD R9 280X Tahiti video cards"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98523">bug 98523</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Resolution</td>
<td>---
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<td>NOTOURBUG
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - Can't run without "nomodeset" on MacPro6,1 with two AMD R9 280X Tahiti video cards"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98523#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - Can't run without "nomodeset" on MacPro6,1 with two AMD R9 280X Tahiti video cards"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98523">bug 98523</a>
from <span class="vcard"><a class="email" href="mailto:alexdeucher@gmail.com" title="Alex Deucher <alexdeucher@gmail.com>"> <span class="fn">Alex Deucher</span></a>
</span></b>
<pre>The problem is Macs expose the vbios for some cards in a proprietary way.
IIRC, the vbios is only available via EFI prior to the OS loading. The
bootloader needs to snag the vbios and then make it available to the OS when it
loads. I'm not really a Mac expert so I don't remember all the details.
There's no way to work around it in the driver.</pre>
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