<p dir="ltr">Sending from my phone outside school gates so I'm not able to get all the details. However, previously on 4.5.7 where I don't need the cstates parameter at all I've found it to be significantly cooler and by manually checking and trying to remember it seemed to be lower power usage (powertop).</p>
<p dir="ltr">Incidentally, those commandline parameters were what was needed to drop the cstates parameter from the commandline with 4.5.7. Not sure how many are needed now.</p>
<p dir="ltr">Another possibility is that some of these crashes are software not kernel. I went from stable to testing yesterday and everything kept crashing. I upgraded to unstable which has proven to be stable to the same level as stable. Also, I noticed one crash which recovered itself. <br></p>
<p dir="ltr">Thanks,<br>
Robert. </p>
<br><div class="gmail_quote"><div dir="ltr">On Wed, 21 Sep 2016, 8:40 a.m. Nicolas Huillard, <<a href="mailto:nicolas@huillard.net">nicolas@huillard.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Le mardi 20 septembre 2016 à 20:19 +0100, Robert Small a écrit :<br>
> Not only can I confirm that this works it makes sound stable on 4.7.3.10!<br>
<br>
Great info, thank you Robert !<br>
<br>
> cpu0 State Name Disabled Latency Residency Time Usage<br>
> 0 POLL 0 0 0 139827 655<br>
> 1 C1-BYT 0 1 1 278968871 443703<br>
> 2 C6N-BYT 1 300 275 529818 620<br>
> 3 C6S-BYT 1 500 560 1498249 1034<br>
> 4 C7-BYT 0 1200 4000 42598904 11160<br>
> 5 C7S-BYT 0 10000 20000 5278866 421<br>
...<br>
<br>
I suppose you can confirm that C6* time and usage doesn't change after<br>
starting the script. C7* are not used that much, but that's probably<br>
because you got this snapshot shortly after boot/tests.<br>
<br>
> cat /proc/cmdline<br>
> BOOT_IMAGE=/boot/vmlinuz-4.7.3.10 root=/dev/mapper/vgDrudwyn-root64 ro<br>
> i915.modeset=1 threadirqs intel_iommu=igfx_off clocksource=tsc tsc=reliable<br>
> sdhci.debug_quirks=0x10000 quiet splash<br>
<br>
Wow... That's a lot of parameters... I'll check mine when I can.<br>
<br>
What about battery life or device temperature when you leave it alone<br>
(it's a bit warm when I leave it alone without C7*) ?<br>
<br>
--<br>
NH<br>
<br>
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