Public bug reported:
After upgrading to Kubuntu 26.04 with kernel 7.0.0-22-generic, the
system panics when entering suspend. The Caps Lock LED blinks (panic
indicator), the power LED stays solid, and the machine no longer
responds to any wake source; only a forced power-off recovers it.
Steps to reproduce: run "systemctl suspend" (or let the system suspend on idle).
The panic occurs with both mem_sleep modes (s2idle and deep).
Nothing is written to the journal; the panic happens before logs are flushed.
Booting the previous kernel 6.17.0-35-generic on the same installation
makes suspend/resume work flawlessly, so this is a regression in the 7.0
series.
Hardware: Dell Latitude 5490, BIOS 1.38.0, Intel 8th gen with integrated
graphics.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-22-generic 7.0.0-22.22
ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0
Uname: Linux 7.0.0-22-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: rveldman 2544 F.... wireplumber
/dev/snd/controlC0: rveldman 2544 F.... wireplumber
/dev/snd/controlC1: rveldman 2544 F.... wireplumber
/dev/snd/seq: rveldman 2540 F.... pipewire
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Fri Jun 12 16:39:41 2026
InstallationDate: Installed on 2026-04-11 (62 days ago)
InstallationMedia: Kubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
MachineType: Dell Inc. Latitude 5490
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-22-generic
root=UUID=489b0fb8-cf69-407d-99c9-70b1f2ae44db ro quiet splash
no_console_suspend initcall_debug
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-06-08 (4 days ago)
dmi.bios.date: 11/06/2024
dmi.bios.release: 1.38
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.38.0
dmi.board.name: 0DH2HV
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.asset.tag: RB379862
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.38.0:bd11/06/2024:br1.38:svnDellInc.:pnLatitude5490:pvr:rvnDellInc.:rn0DH2HV:rvrA00:cvnDellInc.:ct10:cvr:sku0816:pfaLatitude:
dmi.product.family: Latitude
dmi.product.name: Latitude 5490
dmi.product.sku: 0816
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2156610
Title:
Kernel panic on suspend (both s2idle and deep) on Dell Latitude 5490,
regression from 6.17
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