For stm32mp157d-dk1, please use: MACHINE=stm32mp15-disco

Please also use this post for more details. https://community.st.com/t5/stm32-mpus-embedded-software-and/qt-creater-setup-for-stm32mp1/td-p/706440  

Hi, have you followed the documentation: https://wiki.st.com/stm32mpu/wiki/X-LINUX-QT_Expansion_Package#How_to_install_Distribution_Package After final following command, bitbake st-image-qt package-index you should get your image.   Please also use ...

Hi, as I said to you on another post, you need to move to Ubuntu 22.04 or 20.4. Ubuntu 24 has not been tested. https://wiki.st.com/stm32mpu/wiki/PC_prerequisites Philippe.

Noboby on our side has tried with an Ubuntu 24, we use 20.04 or 22.04. I cannot guarantee the support.