This is NOT a duplicate of bug #1934647 - there's no Nvidia or AMD card in this laptop (it's Intel-only) and regressing kernel version is different. If I connect an external monitor I can see the purple background on it, but the login window is on the internal one and I can't blindly login because of another bug, where keyboard input is ignored in ~80% of cases until I click on the username and back button a couple of times.
This is NOT a duplicate of bug #1934647 - there's no Nvidia or AMD card in this laptop (it's Intel-only) and regressing kernel version is different. If I connect an external monitor I can see the purple background on it, but the login window is on the internal one and I can't blindly login because of another bug, where keyboard input is ignored in ~80% of cases until I click on the username and back button a couple of times.