so recently I’ve built an 4.1 ISO (23rd March master branch) and succesfully installed on my Zenbook Pro Duo. It mostly works, but I’ve noticed a few issues (perhaps bugs?), that raised an eyebrow.
I’ve had to add to grub
nouveau.modeset=0 rd.blacklist.drivers=nouveau as otherwise the LUKS passphrase screen was flickering.
Now, when I actually start the laptop with external monitor plugged via HDMI, the LUKS passphrase screen is displayed on the external monitor. However, after entering valid passphrase the HDMI screen turns black, and the user login screen is displayed on my laptops screen.
Once I’m logged in, when I go to Q → System Tools → Display I can only see the two built-in displays from my laptop. Yes, two. This is the Asus Zenbook Pro Duo - it’s got a secondary 4K screen/tablet above the keyboard.
xrandr in dom0 (1.4 KB)
Now I’m not sure what could be the issue here. I mean I suspect it might be that the HDMI port is connected to nVidia card, but then why would it work on LUKS screen? So I guess it has something to do with X, as it seems to “forget” about that display when X starts.
I’ll greatly appreciate any hints how to debug or fix this.