Comment 19 for bug 1998103

(In reply to Leonid Kalmaev from comment #10)

> Hi. This does not work for some reason in the case of sleep. After waking up
> from sleep in powertop I see a good state again. Can you advise on more
> options for this to work correctly?

It seems there's a bug (or a feature) in kernel, which switches the devices in power save mode after suspend, without triggering UDEV events. Here's what tlp developer says: https://github.com/linrunner/TLP/issues/545

>Imho the kernel never issued udev new device events for existing devices after
>resume. You may look into it yourself by enabling TLP's trace mode with
>TLP_DEBUG="run udev usb".

I use tlp software, with bluetooth module powersave blacklist configured and patch which is mentioned in the URL above applied (`set_usb_suspend 0 auto` in tlp resume handler)