Public bug reported:
Title: Critical failure of USB peripherals (AMD xHCI controller) when
changing the power source (AC/Battery) on a laptop running Ubuntu.
Problem Description:
When the laptop charger is unplugged while Ubuntu is running, all connected USB
peripherals are immediately disabled. When the charger is plugged back in, the
peripherals remain disabled. Only a complete system reboot restores USB
functionality. The peripherals work correctly if the system boots with AC power
only or battery power only.
Relevant Hardware:
CPU/Chipset: AMD Raven Ridge / Raven 2 (Confirmed by lspci and powertop
output)
USB Controller: AMD Raven USB 3.1 (xhci_hcd at 0000:05:00.3)
Key Symptoms (from journalctl -f):
When the failure occurs, the kernel reports the following critical error:
kernel: xhci_hcd 0000:05:00.3 warning host system error
This indicates a host system (hardware/firmware) failure in managing the
PCI/USB bus power state change.
Unsuccessful Solutions Attempted:
The following software solutions have been attempted and verified, all without
success:
1- Global USB Autosuspend Disablement:
USB_AUTOSUSPEND=0 was set in TLP.
usbcore.autosuspend=-1 was set in the GRUB command line.
Verification: cat /sys/module/usbcore/parameters/autosuspend returns -1.
The problem persists.
2- TLP and power-profiles-daemon configuration:
Specific USB devices were configured in the TLP blacklist.
The tlp.service service was successfully unmasked and enabled.
Power-profiles-daemon was purged (apt purge) to avoid conflicts.
Result: The issue persists.
3- Firmware/BIOS update:
The laptop's firmware has been updated to the latest version available from
the manufacturer.
Result: The problem persists.
4- Automating USB Controller Restart (Udev/Systemd):
It was manually verified that the commands echo ... | sudo tee .../unbind
and bind temporarily restore USB functionality (only when the laptop is
connected to AC power).
An attempt was made to automate this using custom udev rules and a systemd
service.
Result: Automation fails; there appears to be an issue with the Udev
runtime environment or event timing, or the command does not work on battery
power.
5- Advanced Kernel Parameters (GRUB CMDLINE):
The parameters pci=noacpi acpi_osi=Linux idle=nomwait were added to the
GRUB command line.
Result: pci=noacpi caused a fatal error during boot, confirming that the
problem is deeply rooted in the hardware's PCI/ACPI interface.
Conclusion:
The problem appears to be a power management error at the firmware level or a
bug in the Linux xhci_hcd driver for the specific AMD Raven Ridge chipset,
which is not fixed by standard software configuration and requires attention
from Linux kernel developers or a specific patch.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.14.0-36-generic 6.14.0-36.36~24.04.1
ProcVersionSignature: Ubuntu 6.14.0-36.36~24.04.1-generic 6.14.11
Uname: Linux 6.14.0-36-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: titoux 3859 F.... wireplumber
/dev/snd/controlC0: titoux 3859 F.... wireplumber
/dev/snd/seq: titoux 3852 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Nov 23 01:45:06 2025
InstallationDate: Installed on 2025-11-22 (0 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
MachineType: HP HP Laptop 15-db0xxx
ProcEnviron:
LANG=es_ES.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 simpledrmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-36-generic
root=UUID=185bfaf3-7867-4286-a757-1a4def8a1f44 ro recovery nomodeset
dis_ucode_ldr
RelatedPackageVersions:
linux-restricted-modules-6.14.0-36-generic N/A
linux-backports-modules-6.14.0-36-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.21
SourcePackage: linux-hwe-6.14
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/24/2024
dmi.bios.release: 15.43
dmi.bios.vendor: Insyde
dmi.bios.version: F.43
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 84AE
dmi.board.vendor: HP
dmi.board.version: 86.32
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 86.32
dmi.modalias:
dmi:bvnInsyde:bvrF.43:bd04/24/2024:br15.43:efr86.32:svnHP:pnHPLaptop15-db0xxx:pvrType1ProductConfigId:rvnHP:rn84AE:rvr86.32:cvnHP:ct10:cvrChassisVersion:sku4UA32EA#ABE:
dmi.product.family: 103C_5335KV HP Notebook
dmi.product.name: HP Laptop 15-db0xxx
dmi.product.sku: 4UA32EA#ABE
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP
** Affects: linux-hwe-6.14 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
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https://bugs.launchpad.net/bugs/2132236
Title:
USB ports disabled by removing the power supply
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