Audio does not work about 1 in 5 times. Has anyone experienced this? What can you do?

Screen is connected to a Lenovo ThinkPad via USB-C/Thunderbolt. Driver seems to be up to date. Even in the middle of calls, the screen has suddenly decided that the micro and speakers no longer work. Sometimes a restart helps, but currently the micro doesn't want to work at all - speakers do.

Question

Audio does not work about 1 in 5 times. Has anyone experienced this? What can you do?

Screen is connected to a Lenovo ThinkPad via USB-C/Thunderbolt. Driver seems to be up to date. Even in the middle of calls, the screen has suddenly decided that the micro and speakers no longer work. Sometimes a restart helps, but currently the micro doesn't want to work at all - speakers do.

Answer

It always works for me (Windows&Mac), but when using it withbMac I sometimes have to manually set it to USB output.

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Question about Lenovo ThinkVision T27hv-20