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<body><span class="vcard"><a class="email" href="mailto:arkadiusz.hiler@intel.com" title="arkadiusz.hiler@intel.com <arkadiusz.hiler@intel.com>"> <span class="fn">arkadiusz.hiler@intel.com</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - gem_quiescent_gpu assertion fails on distribution kernels"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105190">bug 105190</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>NOTABUG
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - gem_quiescent_gpu assertion fails on distribution kernels"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105190#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - gem_quiescent_gpu assertion fails on distribution kernels"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105190">bug 105190</a>
from <span class="vcard"><a class="email" href="mailto:arkadiusz.hiler@intel.com" title="arkadiusz.hiler@intel.com <arkadiusz.hiler@intel.com>"> <span class="fn">arkadiusz.hiler@intel.com</span></a>
</span></b>
<pre>Looks like it's caused by Fedora's customization. They picked up kernel
lockdown series <a href="https://lwn.net/Articles/723653/">https://lwn.net/Articles/723653/</a>
If the system is booted using secure boot it puts the kernel in lockdown mode,
which includes disabling all the DebugFSes.
To enable it you have to lift the lockdown:
# sysctl kernel.sysrq=1
<Alt-PrtSc-x> on a physical keyboard; writing to /proc/sysrq-trigger does not
work
[ 137.276888] sysrq: SysRq : Disabling Secure Boot restrictions
[ 137.276963] Lifting lockdown</pre>
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