Hey there,
so I have the same error message.
My Problem is easily reproducable: Booting Ubuntu with AC Pluged-in. Everything is fine.
Take off the AC and a few minutes later this error will occur. followed by:
nvme0: does your device have a faulty power saving mode enabled?
nvme0: try "nvme_core.default_ps_max_latency_us=0 pcie_aspm=off pcie_port_pm=off" and report a bug
after that it is only IO errors as the ssd (Crucial P1) is disabled by ubuntu (24.04. LTS)
Wierd thing is on Windows there are no problems. With AC plugged in either. And the newest firmware by Crucial is “P3CR013” while my current version is “P3CR021” which seems newer?