Public bug reported:
On my ASUS Vivobook S 14 dual-booting Ubuntu and Windows 11, USB-C
charging sometimes stops working after the system has been suspended and
resumed. The issue does not occur in Windows 11.
During the failure, Linux detects the USB-C power source through UCSI,
but the ACPI AC adapter remains offline:
ucsi-source-psy-USBC000:001:
online = 1
status = Charging
voltage = 20000000 uV
current = 4500000 uA
ACAD:
online = 0
BAT1:
status = Discharging
Thus the UCSI power supply reports a 20 V / 4.5 A (90 W) USB-C power
source, while ACAD reports that no AC power is present and the battery
continues discharging.
The kernel log also repeatedly contains:
ucsi_acpi USBC000:00: failed to re-enable notifications (-110)
and:
ucsi_acpi USBC000:00: ucsi_handle_connector_change:
GET_CONNECTOR_STATUS failed (-110)
These errors appear in connection with suspend/resume.
Interestingly, while the failure was active, unplugging and reconnecting
the charger immediately restored charging without requiring a reboot:
Before unplug:
UCSI = 1
ACAD = 0
BAT1 = Discharging
After replug:
UCSI = 1
ACAD = 1
BAT1 = Charging
Rebooting also reliably restores normal charging.
The problem appears to be related to USB-C/UCSI/ACPI handling after
suspend/resume.
I've attached kernel logs and the output of the command "upower -d" in a
file "charging-bug-report.txt"
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-29-generic 7.0.0-29.29
ProcVersionSignature: Ubuntu 7.0.0-29.29-generic 7.0.12
Uname: Linux 7.0.0-29-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: shailesh 4955 F.... wireplumber
/dev/snd/controlC0: shailesh 4955 F.... wireplumber
/dev/snd/seq: shailesh 4935 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 11 12:29:46 2026
InstallationDate: Installed on 2026-07-13 (29 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
MachineType: ASUSTeK COMPUTER INC. ASUS Vivobook S 14 M5406WA_M5406WA
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=tmux-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-29-generic
root=UUID=c39ac997-bd8a-4ac4-82f4-2e17e428eca7 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: 01/05/2026
dmi.bios.release: 5.35
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: M5406WA.316
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: M5406WA
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: 3.10
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrM5406WA.316:bd01/05/2026:br5.35:efr3.10:svnASUSTeKCOMPUTERINC.:pnASUSVivobookS14M5406WA_M5406WA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnM5406WA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaASUSVivobookS14:
dmi.product.family: ASUS Vivobook S 14
dmi.product.name: ASUS Vivobook S 14 M5406WA_M5406WA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
** Attachment added: "Kernel Log and Upower State"
https://bugs.launchpad.net/bugs/2163222/+attachment/5991199/+files/charging-bug-report.txt
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https://bugs.launchpad.net/bugs/2163222
Title:
USB-C charging fails after suspend/resume on ASUS Vivobook S 14
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