lightdm doesn't start if weston is activated (system-compositor ppa, nouveau)

[Jonas Platte]

On my system, lightdm fails to start whenever I try to start it with enabled "type=weston" under "[SeatDefaults]" in my lightdm.conf.

The logs are from my current system start, where the weston-option was enabled at startup, and I disabled it afterwards to start lightdm.

lightdm version: 1.3.1-0ubuntu2+compositor1

[Ubuntu Foundations Team Bug Bot (crichton)]

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[Robert Ancell (robert-ancell)]

Thanks for testing Jonas! The logs show that LightDM started and had a greeter running, did the screen show anything at all?

[Robert Ancell (robert-ancell)]

Hmm, the logs show the xserver was 2:1.12.3+git20120709+server-1.12-branch.60e0d205-0ubuntu0ricotz, not the one in the compositor PPA. Perhaps you have more than one PPA enabled?

[Robert Hooker (sarvatt)]

Yeah xorg-edgers is definitely not to be used at the same time as the system-compositor PPA, xserver in the system-compositor ppa using a different branch for xwayland support which is not upstream yet.

[Robert Ancell (robert-ancell)]

OK, closing as invalid due to running the wrong version of X.

[Jonas Platte (jplatte)]

I'll try again after purging the xorg-edgers ppa, but I'll have to report one additional bug at least, because lightdm doesn't start with weston on my laptop either. And there, I have an Intel graphics chip and no xorg-edgers ppa.

[Linus Seelinger (s-linus)]

I can confirm this on a laptop with an intel graphics chip and a clean ubuntu precise install.

[Jonas Platte (jplatte)]

Did you already report a bug for Intel or should I open one new? This one is only for nVidia and already marked as invalid.

[Колесников Денис Сергеевич (bckpkol)]

I have this bug in Armbian Stretch and Armbian Bionic. Lightdm shows only the black screen after installing weston.

[Колесников Денис Сергеевич (bckpkol)]

The trouble persists after uninstall.