https://bugzilla.kernel.org/show_bug.cgi?id=220357
Bug ID: 220357
Summary: ACPI: CUST0001 interrupt storm after wake from sleep
until touchpad activity
Product: ACPI
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: Power-Sleep-Wake
Assignee: acpi_power-sleep-w...@kernel-bugs.osdl.org
Reporter: dprdimako...@gmail.com
Regression: No
Hello. I’m experiencing a strange ACPI-related issue with my laptop MSI GF63
Thin 9SC (Intel i5-9300H, Kali Linux, kernel 6.15.x).
After resuming from sleep (S3), I get very high interrupt load coming from
device CUST0001 (touchpad, ACPI device) — visible via /proc/interrupts. This
interrupt storm continues until I physically touch the touchpad with my fingers
and move the pointer slightly. Once I do that — the interrupts immediately stop
and the system returns to normal.
I’ve tried various approaches (ACPI wake config, echo disable >
.../power/wakeup, running post-resume scripts, using different kernels), and
nothing helped, except this manual user input. It’s like something needs to
"wake up" the touchpad driver to stop spamming interrupts.
This behavior is 100% reproducible and only happens after suspend/resume. I’m
using the proprietary NVIDIA driver, but the problem still occurs when running
on Intel iGPU only. The interrupt source is:
cat /proc/interrupts
...
53: 238708 0 0 0 IR-IO-APIC 53-fasteoi CUST0001:00
cat /sys/bus/acpi/devices/CUST0001:00/modalias
acpi:CUST0001:PNP0C50:
cat /sys/bus/acpi/devices/CUST0001:00/uevent
MODALIAS=acpi:CUST0001:PNP0C50:
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