Black screen with Nividia GeForce GTX 1080 (Pascal) if there are multiple monitors

a User reported that if there are multiple monitors plugged on the computer when starting Tails, and the usual pascal boot parameters are not added, it ends up on a black screen on the first monitor and saving mode on the others.

if nouveau.noaccel=1 or nouveau.modeset=0 are set, Tails is booting fine but in ow resolution (800x600)

if there is only one monitor, plugged in the display port, and without adding any boot parameters Tails starts correctly. Once Tails has started, it detects and additional computer that is plugged in.

the issue wasn’t there in Tails 3.9

Related issues

• Related to #15116

Original created by @goupille on 16714 (Redmine)