I2s Digital-Hat / I2c Character-Display Problem

[hjfisch]

Sometimes when I switch from Internet-Radio to the flac-Sounds on my SSD , which is connected to the RPI4 , and than back to Internet-Radio , I have no output on my Allo Diggione . Reboot did not solve the problem . I have to switch to another Hat in System , reboot and switch back to Allo Digione and reboot again . After this it is working again . This also happens after switching on the RPI . rAudio seems to work , but no sound . Reproducing this is quite difficult , because it works for 1 or 2 days and than again , no sound . I have 2 systems running and both have the same behavior . Luckily I have a sd-backup from last year , which is working without this probs .

[hjfisch]

Now I'm able to reproduce this issue .
It happends only in combination with I2s Hat and I2c Character Display .
If I disconnect the Display , all is working as expected . After connecting it again , I need to change the I2s Hat in System twice to
get back Sound . If I press the stop-button and change from one Interpret to another I will have no sound anymore . By pressing replace while the sound is running it mostly works . Now I've disabled the display and wait for a fix .

[hjfisch]

Same issue with Volumio . I2s and I2c seems not to work together . I've changed my Allo Digione to a M2Tech Hiface 2 Usb-Stick .