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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - freezes with dual monitors"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104513">104513</a>
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<th>Summary</th>
<td>freezes with dual monitors
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>blumens@fi.muni.cz
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<pre>I'm experiencing frequent system freezes since I connected a second monitor.
In general the hang occurs a few times a day and usually when drawing on both
monitors simultaneously. I tried to reduce the refresh rate to 30Hz as suggest
in <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [SKL][i915] driver crashes with dual 4k monitors on Intel HD 520"
href="show_bug.cgi?id=99908">bug 99908</a>, but that does not seem to have any effect.
Hardware: Intel NUC 7i7BNH and two 4K monitors
uname -a:
Linux wasp 4.14.11-1-ARCH #1 SMP PREEMPT Wed Jan 3 07:02:42 UTC 2018 x86_64
GNU/Linux
kernel parameters (the last two have no effect on the bug):
i915.enable_rc6=0 i915.semaphores=1 drm.debug=0x1e
The only messages appearing in my syslog during the crash are:
Jan 06 10:52:43 wasp kernel: [drm] Reducing the compressed framebuffer size.
This may lead to less power savings
Jan 06 10:52:43 wasp kernel: [drm] Reducing the compressed framebuffer size.
This may lead to less power savings
Jan 06 10:52:43 wasp kernel: [drm] Reducing the compressed framebuffer size.
This may lead to less power savings
If you need me to provide more information, please ask.</pre>
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