Thanks for the bug report. When the problem is happening, please open a
terminal and run:
journalctl -b0 > journal.txt
lspci -k > lspci.txt
dconf dump /org/gnome/shell/ > shellsettings.txt
and attach the resulting text files here. If you couldn't run those
while the problem is happening then reboot and use this instead:
journalctl -b-1 > prevboot.txt
lspci -k > lspci.txt
dconf dump /org/gnome/shell/ > shellsettings.txt
** Changed in: linux-signed-hwe-5.19 (Ubuntu)
Status: New => Incomplete
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-signed-hwe-5.19 in Ubuntu.
https://bugs.launchpad.net/bugs/2028186
Title:
zfs with encryption: sluggish resume from suspend, intermittent
freezes
Status in linux-signed-hwe-5.19 package in Ubuntu:
Incomplete
Bug description:
I had been using Jammy on a Thinkpad T470 for months without problems.
I decided to try a fresh Ubuntu Desktop install using ZFS, using the
install-time option for full-disk encryption.
After using the fresh install for a little while, I noticed that the
system was "more sluggish" in the ZFS configuration (which was
disappointing, but tolerable).
The "sluggishness" is especially noticeable when resuming from
suspend. Typically, I'll look at the system clock and notice that it
does not change for ~tens of seconds. On some occasions, it will
freeze completely (even after waiting many minutes) and require a
reboot.
Given that this the only difference between a "perfectly working
system" and "problematic system" was the filesystem change, I strongly
suspect ZFS as the cause (and/or perhaps enabling the full-disk
encryption option for it during the install).
Any advice on how to further triage this and narrow down the issue
would be appreciated.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.19.0-46-generic 5.19.0-46.47~22.04.1
ProcVersionSignature: Ubuntu 5.19.0-46.47~22.04.1-generic 5.19.17
Uname: Linux 5.19.0-46-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Jul 19 10:03:03 2023
InstallationDate: Installed on 2023-03-22 (119 days ago)
InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64
(20230223)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.19
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.19/+bug/2028186/+subscriptions
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