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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - APL: FIFO underrun observed when a 4k external monitor is connected through usb type-c to HDMI adapter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107663">107663</a>
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<th>Summary</th>
<td>APL: FIFO underrun observed when a 4k external monitor is connected through usb type-c to HDMI adapter
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>major
</td>
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<th>Priority</th>
<td>medium
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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>raviraj.p.sitaram@intel.com
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=141247" name="attach_141247" title="drm log">attachment 141247</a> <a href="attachment.cgi?id=141247&action=edit" title="drm log">[details]</a></span>
drm log
1. Boot APL device.
2. Connect a 4k external monitor to the APL device through usb typeC to HDMI
adapter
Expected: No underrun errors to be observed
Observed: Underrun is observed during hotplug.
Attached is the captured drm log.
adapter used for the testing can be found from url:
<a href="https://store.google.com/product/usb_type_c_to_hdmi_adapter">https://store.google.com/product/usb_type_c_to_hdmi_adapter</a></pre>
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