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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - "enable_rc6" parameter deprecation brings back freezing"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105962#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - "enable_rc6" parameter deprecation brings back freezing"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105962">bug 105962</a>
from <span class="vcard"><a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> <span class="fn">Imre Deak</span></a>
</span></b>
<pre>Did you try if limiting CPU C states also gets rid of the problem (leaving
graphics power saving enabled)? If using intel_idle you can boot with the
intel_idle.max_cstate=1
kernel parameter to do this.
Could you provide a dmesg log booting with drm.debug=0xe?
Did you try to collect logs after the freeze?:
- via ssh if it still works
- net or serial console if the machine has a serial/ethernet plug (for
netconsole <a href="https://wiki.archlinux.org/index.php/Netconsole">https://wiki.archlinux.org/index.php/Netconsole</a>)
- using pstore, having EFI or RAM based pstore, hard and soft lockup detection
enabled in your kconfig and booting with "nmi_watchdog=panic panic=5" kernel
parameters.</pre>
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