SFB client random No Audio Device

One customer of mine has major issues with aprox 20% of their new client platform based on HP Elitebook Folio G1 with Windows 10 64-bit and jabra pro 930.

SFB client random get No audio device. 50% of total 500 clients have had the problem but 20% cant get rid of it.

Windows 10 still has all audio devices in device manager. SFB client restart does not help, windows reboot helps a while but problem occur again. Best way to resolve for longer timeframe is to reboot hp thunderbolt connected via usb-c.

We are now updating bios, firmware and drivers from HP.

Windows 10 anniversary is not installed but october cu path is deployed to some clients for test but have not helped us.

We have also disabled power management on USB which seemed to help on some laptops. Yesterday we disabled bluetooth on one laptop with issues every day and so far it look good.

Asked customer to disconnect any other usb device attached to thunderbolt.

We can´t find main problem and a solution since problem is random and when we change something it works for a day or two..

Lack of ideas and can´t decide if it is a HP or windows problem..

Any suggestion what more to try ?

I have a supportcase at HP but not at microsoft yet...

Jonas Augustine

Advania Sweden

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