I have tested the rc4+ kernel (two reboots with similar results).

I will try to summarize the results:


Rc4+: ASPM L1 enabled both before and after suspend/resume!

Rc4+ before suspend/resume:
Power consumption around 4.3 W
Idle stats: pc2-pc3 is reached
ASPM L1 enabled for NVMe (and all others)

Rc4+ after suspend/resume:
Power consumption around 4.3 W
Idle stats: pc2-pc3 is reached
ASPM L1 enabled for NVMe (and all others)

Rc4+ breaks some Fn-keys and touchpad. In powertop I get 600 wakeups/s
and 10% CPU usage. The Webcam is active 100%. I have attached output
from powertop.


Rc4 before suspend/resume:
Power consumption around 1.4W
Idle stats: pc2-pc3-pc7-pc8-pc10 is reached
ASPM L1 enabled for NVMe (and all others)

Rc4 after suspend/resume:
Power consumption around 4.3W
Idle stats: pc2-pc3 is reached
ASPM Disabled for NVMe (and L1 enabled for all others)

Rc4 - In powertop I get 70 wakeups/s and 1% CPU usage.


** Attachment added: "rc4+.html"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1912057/+attachment/5456382/+files/rc4+.html

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https://bugs.launchpad.net/bugs/1912057

Title:
  Power consumption higher after suspend - Ubuntu 20.10 on Asus UX425JA

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  After boot the idle power consumption is around 2.3 W but after suspend it is 
4.7 W.
  The measurement is 5-10 min after boot/resume - looking at "top" to see 
system was idle.
  This is consistent - I have tried more that 10 times. 
  BIOS is updated to latest version.
  I have checked power consumption with external meter - and confirmed that it 
is higher.

  I have attached output of:
  sudo powertop -t 60 -r --html=before.html  (and after)

  I have noticed that Package C-state 6 is reached before suspend but
  not after.

  I expect that idle power consumption after suspend should be the same
  as before.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: linux-image-5.8.0-38-generic 5.8.0-38.43
  ProcVersionSignature: Ubuntu 5.8.0-38.43-generic 5.8.18
  Uname: Linux 5.8.0-38-generic x86_64
  ApportVersion: 2.20.11-0ubuntu50.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  hjh        1448 F.... pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jan 16 15:49:32 2021
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2021-01-03 (13 days ago)
  InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  MachineType: ASUSTeK COMPUTER INC. ZenBook UX425JA_UX425JA
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=da_DK.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-38-generic 
root=UUID=6296ce1c-eec8-4302-beb1-b4a228780075 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.8.0-38-generic N/A
   linux-backports-modules-5.8.0-38-generic  N/A
   linux-firmware                            1.190.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/28/2020
  dmi.bios.release: 5.14
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX425JA.304
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX425JA
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No  Asset  Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.ec.firmware.release: 3.4
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrUX425JA.304:bd10/28/2020:br5.14:efr3.4:svnASUSTeKCOMPUTERINC.:pnZenBookUX425JA_UX425JA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX425JA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.family: ZenBook
  dmi.product.name: ZenBook UX425JA_UX425JA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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