Intel UHD 750 HDMI auto-detect after boot fails

[werkraum]

When switching off a connected HDMI display the graphics & audio driver crashes. When re-connecting the HDMI display, the graphics driver recovers, but the HDMI audio driver is disabled until the PC is restarted. This was not the case with the previous BIOS version

Alternative Scenario: When starting the PC without the HDMI display ON and connected, the HDMI driver does not startup properly and HDMI audio does not work.

Steps to reproduce:

- Switch off PC
- connect HDMI display with HDMI sound support to on-board graphic
- Switch HDMI display ON FIRST
- Switch PC ON SECOND
- status: all works fine, display & HDMI sound
- switch off HDMI display
- switch on HDMI display

- Display works, sound driver has crashed. HDMI sound device disappears from the all sound device selection menus. Device manager shows that the display driver stopped (see screenshot).
- Restart PC with HDMI ON and connected.

Alternative Scenario:

- Switch off PC
- connect HDMI display with HDMI sound support to on-board graphic
- Switch PC ON FIRST
- Switch HDMI display ON SECOND
- Display works, sound driver has crashed. HDMI sound device disappears from the all sound device selection menus. Device manager shows that the display driver stopped (see screenshot).
- Restart PC with HDMI ON and connected.

Intel Driver versions:
Intel Chipset Drivers 10.1.18836.8283
Intel SVGA Drivers 30.0.100.9805
Intel Serial IO Drivers 30.100.2129.8
Intel ME Drivers 2141.15.0.2511