[Regression] s2idle excessive wakeups after upgrade to linux-6.17.0-19-generic

[Prakhar Gupta]

OS: Ubuntu 25.10 (Questing Quokka) - development release
Kernel (broken): 6.17.0-19-generic
Kernel (working): 6.17.0-14-generic

On Sun, Mar 15, 2026 at 3:08 AM Prakhar Gupta <
prakhargupta.regular at gmail.com> wrote:

> Hi,
>
> I'm experiencing severe battery drain during suspend (s2idle) after
> upgrading
> from linux-6.17.0-14-generic to linux-6.17.0-19-generic on Ubuntu.
>
> The wakeup count reaches ~45,773 over ~9 hours of suspend, draining the
> battery to near zero. This did not occur on the previous kernel.
>
> Suspend mode: s2idle (confirmed via PM: suspend entry (s2idle) in dmesg)
> Last working kernel: 6.17.0-14-generic
> Broken kernel: 6.17.0-19-generic
>
> Wakeup sources enabled: XHCI (USB, pci:0000:00:14.0), PS2K, RP08
>
> Steps to reproduce:
> 1. Boot linux-6.17.0-19-generic
> 2. Suspend the system (s2idle)
> 3. Leave for several hours
> 4. Check: cat /sys/power/wakeup_count
>
> Output after ~9 hours: 45773
>
> I have attached the `suspend-bug-report.txt` for your reference.
> Please let me know if further diagnostics are needed.
>
> Prakhar
>
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