Changing the disk to AHCI in BIOS allows my 9310 to reach C10, fixing the sleeping heater issue.

https://bugzilla.kernel.org/show_bug.cgi?id=211879#c24

I’m running linux kernel 5.14.3 for the QCA6390 support as my laptop is the Windows edition.

Switch to AHCI fixed C10 sleep for me in Linux,

https://bugzilla.kernel.org/show_bug.cgi?id=211879#c24

I’m running 9310 with linux kernel 5.14.3 for the QCA6390 support as my laptop is the Windows edition.

2020 XPS 9310 user here. Running Linux on the Windows edition of this laptop, with the killer wifi ath11k QCA6390. Bios 3.0.4.

Wifi: I’m now on Linux 5.14.3 and have been chasing latest kernels all year for stable QCA6390 support - this is now all good for this edition of the laptop.

Sleep: Running hot in sleep, would always be flat in the morning etc.

As others have pointed out, there are infrequent issues where rewakening doesn’t completely - blank screen, necessitating hard power off.

However sleep/resume are much better - to the point of acceptable - after switching to AHCI disk setup in the bios.

https://bugzilla.kernel.org/show_bug.cgi?id=211879#c24

Switching bios disk from RAID to AHCI allows the machine to reach C10. The creates the issue Windows 10 (Pro) no longer sees the boot drive, so you have to set it back to RAID mode if needed.