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Hi,
I am new to arch (used to debian) on my new laptop, an ASUS ROG GL502VS. It sports a skylake i7 6700HQ and a gtx1070 (gsync; no bumblebee stuff, no intel graphics available).
$ uname -r
4.8.12-2-ARCH
But powertop seems to indicate that only PC2 is being reached, even after I enabled all "bad" configurations through powertop (SATA notably, not usb mouse autosuspend though):
Package | Core | CPU 0 CPU 4
| | C0 active 1.9% 0.5%
| | POLL 0.0% 0.0 ms 0.0% 0.0 ms
| | C1E-SKL 0.8% 1.2 ms 0.0% 0.1 ms
C2 (pc2) 76.5% | |
C3 (pc3) 0.0% | C3 (cc3) 0.3% | C3-SKL 0.3% 0.5 ms 0.0% 0.6 ms
C6 (pc6) 0.0% | C6 (cc6) 3.6% | C6-SKL 3.9% 0.7 ms 0.2% 1.2 ms
C7 (pc7) 0.0% | C7 (cc7) 88.8% | C7s-SKL 0.0% 0.3 ms 0.0% 0.0 ms
C8 (pc8) 0.0% | | C8-SKL 27.0% 4.7 ms 5.9% 5.0 ms
C9 (pc9) 0.0% | | C9-SKL 0.0% 0.0 ms 0.0% 0.0 ms
C10 (pc10) 0.0% | | C10-SKL 63.2% 14.8 ms 92.1% 34.8 ms
| Core | CPU 1 CPU 5
| | C0 active 1.1% 0.6%
| | POLL 0.0% 0.0 ms 0.0% 0.0 ms
| | C1E-SKL 0.8% 0.6 ms 0.0% 0.3 ms
| |
| C3 (cc3) 0.1% | C3-SKL 0.2% 0.3 ms 0.0% 0.0 ms
| C6 (cc6) 6.6% | C6-SKL 5.2% 1.4 ms 2.7% 0.9 ms
| C7 (cc7) 87.2% | C7s-SKL 0.0% 0.0 ms 0.0% 1.6 ms
| | C8-SKL 16.3% 3.6 ms 15.1% 5.8 ms
| | C9-SKL 0.0% 0.0 ms 0.0% 0.0 ms
| | C10-SKL 74.1% 18.5 ms 80.1% 32.8 ms
| Core | CPU 2 CPU 6
| | C0 active 1.4% 0.7%
| | POLL 0.0% 0.0 ms 0.0% 0.0 ms
| | C1E-SKL 2.5% 1.9 ms 0.1% 0.4 ms
| |
| C3 (cc3) 0.1% | C3-SKL 0.2% 0.3 ms 0.0% 1.5 ms
| C6 (cc6) 1.9% | C6-SKL 2.2% 0.8 ms 0.1% 0.9 ms
| C7 (cc7) 90.3% | C7s-SKL 0.0% 0.4 ms 0.0% 0.0 ms
| | C8-SKL 19.3% 3.8 ms 11.7% 6.1 ms
| | C9-SKL 0.0% 0.0 ms 0.0% 0.0 ms
| | C10-SKL 72.5% 27.4 ms 86.2% 30.2 ms
| Core | CPU 3 CPU 7
| | C0 active 1.7% 0.5%
| | POLL 0.1% 8.9 ms 0.0% 0.0 ms
| | C1E-SKL 3.4% 2.6 ms 1.3% 4.1 ms
| |
| C3 (cc3) 0.1% | C3-SKL 0.1% 0.2 ms 0.0% 0.2 ms
| C6 (cc6) 4.6% | C6-SKL 4.5% 1.5 ms 0.5% 0.8 ms
| C7 (cc7) 84.6% | C7s-SKL 0.0% 0.0 ms 0.0% 0.0 ms
| | C8-SKL 15.1% 4.0 ms 10.4% 6.4 ms
| | C9-SKL 0.0% 0.0 ms 0.0% 0.0 ms
| | C10-SKL 71.9% 22.5 ms 86.0% 33.1 ms
I am not sure why this is the case. Any ideas or tips what to try? Should I even bother?
Thanks
EDIT: Just to clarify, I've seen these, but they did not help: https://bbs.archlinux.org/viewtopic.php?id=214810 https://bbs.archlinux.org/viewtopic.php?id=217105 https://bbs.archlinux.org/viewtopic.php?id=214810
Also not certain if this is the correct subforum. If not, please help me move it.
Last edited by compul (2016-12-08 18:39:37)
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If you have already "fixed" all the bad tunables reported by powertop and you still can't get lower than PC2 then I guess there isn't much more you can do. Do check if there are any bios/fw updates and make sure you enable any power saving related options the the bios/fw setup.
If you should care or bother to get it "fixed", if taking what is in the cpu's datasheet at face value then yes, this is what the datasheet has to say: "Caution: Long term reliability cannot be assured unless all the Low-Power Idle States are enabled."
R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K
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Hey, after you pointed it out in the "Laptops which run Arch", I too noticed that even though cores sepnd most of the time in C7 state, package state higher than C2 is never reached.
I do own the same laptop.
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Try linux 4.9-rc8? Perhaps better support has been mainlined?
https://aur.archlinux.org/packages/linux-mainline
Last edited by graysky (2016-12-08 22:48:50)
CPU-optimized Linux-ck packages @ Repo-ck • AUR packages • Zsh and other configs
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Hey, after you pointed it out in the "Laptops which run Arch", I too noticed that even though cores sepnd most of the time in C7 state, package state higher than C2 is never reached.
I do own the same laptop.
I have the FHD version though, not sure if that makes any difference (prolly little).
BIOS is the newest, not sure about any firmware. (how am I to check?)
EDIT: barely any options in BIOS, nothing I thought related to power management (except maybe "wake on lid open"). I'll try the 4.9 kernel.
EDIT: In fact I just noticed a new BIOS update came out just two days ago. I'll try that too.
UPDATE: Neither helped. I could not get the nvidia module to load under the mainline kernel (?!), but powertop with everything optimized (except usb autosuspend and the nvidia option) still only showed PC2, while all cores were >90% in C7. Does that even make sense? There's got to be some overlap then that there is a package which is in C7 in all cores, which would make it PC7, no? Am I wrong?
Last edited by compul (2016-12-09 05:59:19)
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Hey, as for Nvidia driver not loading on 4.9, you should grab the nvidia-dkms.
I also found this: http://mjg59.dreamwidth.org/41713.html
Which basically suggests it's an issue with NVMe power management.
According to this: http://www.phoronix.com/scan.php?page=n … vings-APST
NVMe power management changes might come with Linux 4.9, though looking at the github mirror for Linux kernel, I didn't find any NVMe power management related changes for tag v4.9
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I thought it might be interesting to mention that I now get P-state C3, IF I enable the SATA tunables in powertop AND I don't standby. (Can't reach the higher states anymore after waking.)
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Have u tried 4.11 yet? U can build it from our own PKGBUILD if it isn't yet in testing
CPU-optimized Linux-ck packages @ Repo-ck • AUR packages • Zsh and other configs
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No -- I will try as soon as it is in core / testing. (I am new to arch and currently don't have the time to fiddle around just to find out what I'll know anyways in a while.)
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Follow-up: 4.11.3-1 and still only PC3
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I can confirm this, I also have an i7-6700HQ and can also only get into PC3 (if I enable SATA tunables in powertop). However I can get into deeper states if I disable disable the card reader and LAN in bios.
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I had a similar issue with my laptop. I updated my bios and the issue went away on my Thinkpad T460. Now i sit at PC6 most of the time with PC7 showing up during idle. I have an i5-6200U.
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I managed it to go down to PC7 with this patched module: https://github.com/KastB/r8169. So it seems the problem is caused by the Realtek card. I hope it gets fixed with the 4.12 kernel, waiting for it to land in core.
My boot parameters:
quiet pcie_aspm=force acpi_osi=! acpi_osi=\"Windows 2009\"
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4.13.12-1-ARCH, still doesn't appear to be fixed. I'll try your patch at some point...
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I'm still convinced (sadly don't have any surefire resources to back it up) that HQ processors by nature are unable to attain the higher pstates, if they were able to there would be no reason for the U version of the models to exist, that's the tradeoff you make, these perform better at the cost of battery life.
Would of course, be interested in being proven wrong here.
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I really don't care about battery life. I'm just worried about the life of the CPU.
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Your battery will die way before your CPU will ...
CPU-optimized Linux-ck packages @ Repo-ck • AUR packages • Zsh and other configs
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Mine problem was caused by ASPM bein disabled in the r8619 driver.
Try using the r8618 driver, blacklist the r8619 and try these kernel parameters:
pcie_aspm=force r8168.aspm=1
These are working for me.
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