<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [KBL] "enable_rc6" parameter deprecation brings back freezing"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105962#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [KBL] "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:freedesktop.org@nospam.mooo.com" title="paulz <freedesktop.org@nospam.mooo.com>"> <span class="fn">paulz</span></a>
</span></b>
<pre>(In reply to Imre Deak from <a href="show_bug.cgi?id=105962#c11">comment #11</a>)
<span class="quote">> (In reply to Filip from <a href="show_bug.cgi?id=105962#c8">comment #8</a>)
> > Update: a freeze did unfortunately occur with c-states limited. The other
> > user from the forum also mentioned he tested this before and had the same
> > outcome.
>
> Ok, thanks for trying.</span >
disabling c-states do not help
<span class="quote">> Ok, as I understood you already tried booting with i915.enable_dc=0 and that
> didn't get rid of the problem.</span >
yes, RC6 have to be disabled
<span class="quote">> Could you confirm that all display outputs were off when the freeze happened?</span >
the screens are not off but freezed. After a long time, the screens are black
if i remember correctly
<span class="quote">> I'm guessing the DC state toggling is due to GPU activity, probably due to
> updating the clock in your GUI. Could you try preventing these updates (and
> any other GPU activity) for instance by switching away to another VT from
> your GUI and seeing if the freeze still happens?</span >
switching away to another VT is NOT possible, its the whole PC that freeze!
Even SysRq don't work, keyboard is also dead
<span class="quote">> Please also provide a dmesg
> log booting with drm.debug=0x1f up to the freeze to double-check what causes
> the DC state toggling.</span >
i will do that.
<span class="quote">> Could you try if booting with nomodeset the freeze still happens?</span >
i will give it a try
<span class="quote">> Ok, please still try if the pstore method provides something.</span >
i will give it a try</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>