Comment 3 for bug 1914670

Hi Ian,

We sometime get compatibility issue form different external device and even the HDMI cord(e.g. LP: #1890772).

To check if it's a external device issue, could you please help to do some test:
1. Will BIOS shows on external HDMI monitor if you plugged HDMI before booting up your machine?
2. If lower resolution make you HDMI monitor light up?
   - I saw you make it light up after manually xrander command, how if you change the resolution up and down? (I'm wondering if it related to LP: #1890772)