[Bug 203535] Bluetooth: command tx timeout with Intel Corporation Wireless 7260 in A2DP mode

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=203535

--- Comment #11 from ValdikSS (iam@valdikss.org.ru) ---
(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)

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