Public bug reported:
**1. The Release of Ubuntu you are using:**
Ubuntu 26.04 LTS (Resolute Raccoon).
**2. The version of the package you are using:**
Kernel version found via `uname -r` (Please run this command and paste the
output here).
**3. What you expected to happen:**
The laptop should enter a "deep" sleep state (S3), where all tasks are
suspended, the screen turns off, and the fans stop running.
**4. What happened instead:**
The screen goes black, but the fans continue to run indefinitely. The system
fails to reach a true suspend state.
**5. Supporting Evidence (Technical Logs):**
[cite_start]From my `dmesg` logs during the suspend attempt[cite: 7]:
* [cite_start]**Primary Failure:** `xhci_hcd 0000:00:14.0: PM: failed to
suspend async: error -16`[cite: 7].
* [cite_start]**USB Conflict:** `usb 1-7: PM: failed to resume async: error
-5`[cite: 3, 6, 11]. [cite_start]This device is identified as the **MSI EPF
USB**[cite: 1, 4, 10].
* [cite_start]**Thermal Issue:** `intel_pch_thermal 0000:00:14.2: CPU-PCH
current temp [64C] higher than the threshold temp [50C], S0ix might
fail.`[cite: 4].
* [cite_start]**System State:** The system attempts `suspend entry (deep)` but
immediately encounters `PM: Some devices failed to suspend, or early wake event
detected`[cite: 6, 8].
**6. Hardware Context:**
* **Model:** MSI PE60-6QE.
* **Environment:** Development setup running on Ubuntu 26.04.
**7. Confirmed Workaround:**
I have confirmed that disabling the `XHC` (USB 3.0 controller) wakeup trigger
allows the system to sleep normally.
* **Command used:** `echo XHC > /proc/acpi/wakeup` (toggling it to `*disabled`).
* This suggests a conflict between the MSI internal USB controller and the
kernel's power management for the XHCI bus.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "sleepproblem"
https://bugs.launchpad.net/bugs/2151782/+attachment/5968733/+files/sleepproblem
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https://bugs.launchpad.net/bugs/2151782
Title:
MSI PE60-6QE: Suspend fails due to xhci_hcd (USB 3.0) controller error
-16
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