Public bug reported:
Hardware: Lenovo ThinkPad X1 Carbon Gen 13 (21NS004UGE), Lunar Lake
BIOS: [dmidecode output] (fwupd reports system firmware as latest)
OS: Ubuntu 26.04 LTS, kernels 7.0.0-34-generic and 7.0.0-38-generic
Device: [lspci -nnk output for 0000:00:14.7] (Intel Bluetooth 8086:a876)
Problem:
With the lid closed, s2idle is entered and aborted after ~2 s, repeatedly
(~2 s awake, ~25 s pause). The battery drains while the lid is closed.
Kernel log per cycle:
btintel_pcie 0000:00:14.7: PM: pci_pm_suspend(): btintel_pcie_suspend
[btintel_pcie] returns -16
btintel_pcie 0000:00:14.7: PM: failed to suspend async: error -16
PM: Some devices failed to suspend, or early wake event detected
/sys/power/pm_wakeup_irq is empty. Masking ACPI GPEs did not change the
behavior.
The problem is reproducible on both kernels listed above.
Observations (single runs, not repeated systematically):
- btintel_pcie unloaded and bluetooth.service stopped before suspend:
one suspend of ~65 s without the error.
- Module loaded, Bluetooth soft-blocked via rfkill: one suspend of ~2 min 48 s
without the error.
- Bluetooth active: the loop above, every cycle.
Not tested: other kernel versions, newer linux-firmware, Bluetooth firmware
version, reproduction after unblocking rfkill following the successful runs.
Workaround: block Bluetooth via rfkill before suspend.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mauricefink 5237 F.... wireplumber
/dev/snd/controlC0: mauricefink 5230 F.... pipewire
mauricefink 5237 F.... wireplumber
/dev/snd/seq: mauricefink 5230 F.... pipewire
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 15 10:47:10 2026
InstallationDate: Installed on 2026-09-28 (17 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
IwDevWlp0s20f3Link: Not connected.
MachineType: LENOVO 21NS004UGE
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 xedrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-38-generic
root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/12/2026
dmi.bios.release: 1.48
dmi.bios.vendor: LENOVO
dmi.bios.version: N4BET78W (1.48 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21NS004UGE
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76576 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.41
dmi.modalias:
dmi:bvnLENOVO:bvrN4BET78W(1.48):bd08/12/2026:br1.48:efr1.41:svnLENOVO:pn21NS004UGE:pvrThinkPadX1CarbonGen13:rvnLENOVO:rn21NS004UGE:rvrSDK0T76576WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21NS_BU_Think_FM_ThinkPadX1CarbonGen13:pfaThinkPadX1CarbonGen13:
dmi.product.family: ThinkPad X1 Carbon Gen 13
dmi.product.name: 21NS004UGE
dmi.product.sku: LENOVO_MT_21NS_BU_Think_FM_ThinkPad X1 Carbon Gen 13
dmi.product.version: ThinkPad X1 Carbon Gen 13
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2170952
Title:
Subject: btintel_pcie: suspend returns -16 (EBUSY), s2idle aborts in a
loop on ThinkPad X1 Carbon Gen 13
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