<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SNB regression] Power consumption goes postal after resume"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54089#c75">Comment # 75</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SNB regression] Power consumption goes postal after resume"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54089">bug 54089</a>
from <span class="vcard"><a class="email" href="mailto:arekm@maven.pl" title="Arkadiusz Miskiewicz <arekm@maven.pl>"> <span class="fn">Arkadiusz Miskiewicz</span></a>
</span></b>
<pre>Is that possible that this issue came back? Using 3.16 and 3.17git kernels.
After resume from ram power usage grows about 10W.
powertop shows that "CPU core" power usage rises a lot (GPU is part of this
right?) but not sure if this can be trusted.
Idle states are
| Powered On 3,3% |
| RC6 96,7% |
so rc6 is being used mostly. Even after resume.
Happens after every suspend & resume cycle. This is Dell XPS 15 9530.
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor
Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
Example, before suspend was ~26W, now:
The battery reports a discharge rate of 39.1 W
System baseline power is estimated at 35.8 W
Power est. Usage Device name
16.5 W 11,0% CPU core
6.98 W 60,0% Display backlight
5.75 W 11,0% CPU misc
2.24 W 49,9 pkts/s Network interface: wlan0 (iwlwifi)
2.01 W 78,2 ops/s GPU misc
1.61 W 11,0% DRAM
620 mW 100,0% USB device: USB Receiver (Logitech)
106 mW 78,2 ops/s GPU core
0 mW 0,1 pkts/s nic:tap0
0 mW 100,0% Radio device: iwlwifi
0 mW 100,0% USB device: xHCI Host Controller
How I can track this more?</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>