Am 20.01.22 um 13:59 schrieb Vincent Lefevre:
Control: reassign -1 lightdm-gtk-greeter 2.0.8-2 Control: retitle -1 lightdm-gtk-greeter: on startup, the greeter may fail to appear in a multiple-monitor setup - race condition Control: tags -1 - unreproducible - moreinfo (removing "unreproducible" after adding "in a multiple-monitor setup" in the title) On 2022-01-20 09:54:00 +0100, Michael Biebl wrote:Am 20.01.22 um 05:08 schrieb Vincent Lefevre:Package: systemd Version: 250.3-1 Severity: critical Justification: breaks unrelated software The upgrade to systemd 250.3-1 breaks lightdm / lightdm-gtk-greeter: the menu bar and login dialog no longer appear.I quickly checked the changelog between 250.2 and 250.3 [1] but didn't find anything which might appear relevant (the closest maybe being 19fbd7764d) In a next step, I tried lightdm in VM and it came up just fine with 250.3-1 (see attached screenshot). It is thus likely that this issue is specific to your system.I've done many tests, and indeed, it only occurs with a multiple-monitor setup: 2 or 3 monitors (but the 3rd monitor, if any, is always ignored, probably because the nVidia driver cannot handle 3 active monitors at the same time)... so, in short, the laptop screen and an external monitor. The second point is that there is a race condition in the detection of the monitors on startup, so that the behavior varies.
[...] Thanks for the detailed follow-up.
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