High battery drain during suspend on Kernel 6.2

[Noam Mor]

I have high battery drain during sleep with my Dell XPS 9320. It drains fast when I boot into kernel 6.2 (linux-image-6.2.0-32-generic) but not when I boot into kernel 6.0 (linux-image-6.0.0-1020-oem).

I took these measurements:

 - Kernel 6.0: suspended for 11 hours from a full charge - 6% battery drain
 - Kernel 6.2: suspended for 6.5 hours from a full charge - 27% battery drain

I'm using the latest BIOS version for my laptop (2.5.0). I'm on Ubuntu 22.04.

I'm attaching two syslog excerpts of suspend/resume cycles on both kernels (they are from the suspend/resume when I took the measurements).

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-6.2.0-32-generic 6.2.0-32.32~22.04.1
ProcVersionSignature: Ubuntu 6.0.0-1020.20-oem 6.0.9
Uname: Linux 6.0.0-1020-oem x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Sep 20 05:10:19 2023
InstallationDate: Installed on 2022-11-29 (295 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
ProcEnviron:
 TERM=screen-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-6.2
UpgradeStatus: No upgrade log present (probably fresh install)