Xorg does not work out of the box on Intel GMA 3150 graphics

[nh2]

Issue description

NixOS 19.09 on a Samsung Chromebook 500C "Alex", installed via https://github.com/nh2/chrubuntu-anyos.

Xorg does not start. /var/log/X.0.log shows:

(EE) modeset(0): Failed to initialize glamor at ScreenInit() time.

Workaround

Set the option

services.xserver.videoDrivers = [ "intel" ];

Reason

This fixes the modesetting driver breaking the graphics; the (bad) default is

services.xserver.videoDrivers = [ "radeon" "cirrus" "vesa" "vmware" "modesetting" ];

I found this solution via #61125 from #55520.

What to do

Can we change NixOS somehow so that on this graphics hardware where modesetting doesn't work, we use intel instead?

[nixos-discourse]

This issue has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/more-than-a-week-trying-to-run-any-de-or-wm-on-my-i686-old-notebook-can-someone-help-me-please/5580/7

[stale[bot]]

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[nixos-discourse]

This issue has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/fresh-system-after-graphical-install-hangs-on-started-display-manager/40970/12