Public bug reported:
System:
Ubuntu desktop on ASUS laptop
Kernel: 7.0.0-29-generic
Summary:
During normal desktop use, USB input stopped functioning. The external USB
keyboard and USB wireless mouse both stopped responding, while the built-in
I2C touchpad continued to work.
At approximately 2026-08-14 19:27 EDT I captured the system while it was in
the failed state.
The affected USB devices were still enumerated by lsusb and registered as
Linux input devices with usbhid bound:
- Intel Raptor Lake USB 3.2 Gen 2x2 xHCI controller: 0000:00:14.0
- USB wireless mouse: usb-0000:00:14.0-6, /dev/input/event12
- USB keyboard: usb-0000:00:14.0-1.2.4, /dev/input/event6
Both event devices remained present but produced no input events. Testing the
raw event devices with:
sudo timeout 10s od -An -tx1 /dev/input/event12
sudo timeout 10s od -An -tx1 /dev/input/event6
produced no data while moving/clicking the mouse or pressing keyboard
keys.
I then physically unplugged USB devices, including an external USB optical
drive and other peripherals. The disconnected devices continued to appear in
lsusb. This suggests that the kernel USB topology had become stale and
disconnect events were no longer being processed.
A second external monitor also froze, continuing to display its last image.
The external displays are connected through a USB/USB-C HDMI adapter/dock.
The built-in touchpad continued working throughout. It is an I2C HID device
and is not connected through xHCI.
Recovery test:
I unbound and rebound the Intel xHCI controller:
echo -n '0000:00:14.0' | sudo tee /sys/bus/pci/drivers/xhci_hcd/unbind
sleep 3
echo -n '0000:00:14.0' | sudo tee /sys/bus/pci/drivers/xhci_hcd/bind
After rebinding xhci_hcd:
- the USB mouse immediately worked again
- USB devices could be reconnected normally
- the external USB keyboard worked again
- the previously frozen second monitor began working again
However, the laptop's built-in keyboard remained nonfunctional.
The built-in keyboard is separately registered as:
AT Raw Set 2 keyboard
/sys/devices/platform/i8042/serio0/
driver: /sys/bus/serio/drivers/atkbd
It also produced no usable keyboard input. Unbinding and rebinding
atkbd:
echo -n serio0 | sudo tee /sys/bus/serio/drivers/atkbd/unbind
sleep 2
echo -n serio0 | sudo tee /sys/bus/serio/drivers/atkbd/bind
did NOT restore the laptop keyboard.
The I2C touchpad remained functional.
A search of the kernel journal during the failure for:
i8042|serio|atkbd|keyboard|xhci|usb|hid|irq|interrupt|ACPI|timeout|error
produced no messages.
Expected result:
USB devices should continue processing input and disconnect events. The
built-in keyboard should remain functional. External displays should not
freeze.
Actual result:
The Intel xHCI/USB path stopped processing input/disconnect activity while
devices remained enumerated. An external display froze simultaneously.
Resetting xhci_hcd restored the USB devices and external display, but the
separate i8042/atkbd laptop keyboard remained nonfunctional.
Additional observation:
I have previously experienced external-display corruption when monitors are
connected through the same USB/USB-C HDMI adapter/dock. I do not yet know
whether those incidents have the same root cause, but I am including this as
a potentially relevant correlation.
Reproducibility:
Not yet intentionally reproduced. This occurred during normal use with
multiple USB peripherals/hubs and external monitors attached.
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
NonfreeKernelModules: zfs
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 14 19:43:44 2026
IwDevWlo1Link: Not connected.
MachineType: ASUSTeK COMPUTER INC. ROG Strix G18 G814JVR_G814JVR
ProcFB:
0 i915drmfb
1 nvidia-drmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-29-generic root=ZFS=UbuntuZFS/root
ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-06-05 (70 days ago)
WifiSyslog:
dmi.bios.date: 10/24/2024
dmi.bios.release: 5.27
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: G814JVR.320
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: G814JVR
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: 0.49
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrG814JVR.320:bd10/24/2024:br5.27:efr0.49:svnASUSTeKCOMPUTERINC.:pnROGStrixG18G814JVR_G814JVR:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnG814JVR:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaROGStrixG18:
dmi.product.family: ROG Strix G18
dmi.product.name: ROG Strix G18 G814JVR_G814JVR
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: "full-journal.txt"
https://bugs.launchpad.net/bugs/2163551/+attachment/5992266/+files/full-journal.txt
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2163551
Title:
Intel Raptor Lake xHCI stalls with stale USB devices; USB input and
external display freeze, i8042 keyboard also stops responding
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2163551/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
