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<body><span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@* - warn - Suspicious CRC: it looks like the CRC read back was from a register in a powered down well"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106974">bug 106974</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">i915 features</td>
<td>display/Other
</td>
<td>display/PSR
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@* - warn - Suspicious CRC: it looks like the CRC read back was from a register in a powered down well"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106974#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@* - warn - Suspicious CRC: it looks like the CRC read back was from a register in a powered down well"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106974">bug 106974</a>
from <span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span></b>
<pre>I was just looking at crcs on icl and spotted the following:
0x00098785 0xd2d6ad2b 0x00000000 0x00000000 0x00000000 0x00000000
0x00098786 0xd2d6ad2b 0x00000000 0x00000000 0x00000000 0x00000000
0x0009879b 0xffffffff 0x00000000 0x00000000 0x00000000 0x00000000
0x0009879c 0xd2d6ad2b 0x00000000 0x00000000 0x00000000 0x00000000
0x0009879d 0x82618fd1 0x00000000 0x00000000 0x00000000 0x00000000
So the frame counter jumps by quite a lot there and we get a bogus crc at the
same time. As I immediately suspected the culprit is PSR. We should probably
disable PSR while CRC capturing is enabled.</pre>
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