>>> There are *some* issues with intel gpu's and recent kernels. I can't use >>> multiple monitors in most of the cases as the i915 module misinterpret >>> possible resolutions, for example. > Also, I remember some issue with external monitors on this list not long ago: https://lists.archlinux.org/pipermail/arch-general/2019-June/046539.html Even if the OP suspected a faulty HDMI port, this might still be related. That was me. Try the following: set the boot Display to HDMI in the bios / Uefi. If it shows stuff (Lenovo logo or bios menu if invoked) it’s not the hardware. For me the issue fixed itself after a day without explanation. — Flo
