Black Screen 'LIGHTDM_IS_LANGUAGE (language)' failed

[BroccoliRaab]

When I start lightdm I get a black screen with a mouse. System is responsive, I can move the mouse and other TTY's work.

I am running void linux and the default webkit greeters work

This seems to be the error

/var/log/lightdm/seat0-greeter.log :

** Message: 21:45:38.202: console message: file:///usr/share/lightdm-webkit/themes//Aether/dist/js/Aether.js @29: ReferenceError: Can't find variable: Symbol

Gdk-Message: 21:45:47.496: lightdm-webkit-greeter: Fatal IO error 4 (Interrupted system call) on X server :0. 

If I beautify Aether.js the error says the error is in this function on line 3946

 3884     "use strict";
 3885     Object.defineProperty(t, "__esModule", {
 3886         value: !0
 3887     }), t.SettingsReducer = void 0;
 3888     var r = Object.assign || function(e) {
 3889         for (var t = 1; t < arguments.length; t++) {
 3890             var n = arguments[t];
 3891             for (var r in n) Object.prototype.hasOwnProperty.call(n, r) && (e[r] = n[r])
 3892         }
 3893         return e
 3894     };
 3895     t.addAdditionalSettings = function(e) {
 3896         var t = {
 3897                 active: !1,
 3898                 minimized: !1,
 3899                 distro: !0 === window.__debug ? "src/test/logos/archlinux.png" : "/usr/share/lightdm-webkit/themes/lightdm-webkit-theme-aether/src/img/logos/archlinux.png",
 3900                 page_zoom: 1,
 3901                 avatar_enabled: !0,
 3902                 avatar_size: "200px",
 3903                 avatar_shape: "circle",
 3904                 avatar_background_enabled: !0,
 3905                 font_scale: 1,
 3906                 date_enabled: !0,
 3907                 date_format: "<em>%A</em>, the <em>%o</em> of <em>%B</em>",
 3908                 experimental_stars_enabled: !1,
 3909                 time_enabled: !0,
 3910                 time_format: "%H:%M",
 3911                 hostname_enabled: !0,
 3912                 user_switcher_enabled: !0,
 3913                 command_shutdown_enabled: !0,
 3914                 command_reboot_enabled: !0,
 3915                 command_hibernate_enabled: !0,
 3916                 command_sleep_enabled: !0,
 3917                 command_icons_enabled: !0,
 3918                 command_text_align: "left",
 3919                 style_command_background_color: "hsla(0, 0%, 22%, 1)",
 3920                 style_command_icon_color: "hsla(349, 98%, 65%, 1)",
 3921                 style_command_text_color: "hsla(0, 100%, 100%, 1)",
 3922                 style_login_border_color: "hsla(0, 100%, 100%, 0.1)",
 3923                 style_login_border_enabled: !0,
 3924                 style_login_button_color: "hsla(0, 100%, 100%, 0.22)",
 3925                 style_login_gradient_top_color: "hsla(18, 100%, 61%, 0.66)",
 3926                 style_login_gradient_bottom_color: "hsla(339, 94%, 64%, 1)",
 3927                 style_login_username_color: "hsla(0, 100%, 100%, 1)",
 3928                 window_border_radius: "4px",
 3929                 window_font_size: "1em"
 3930             },
 3931             n = {},
 3932             i = !0,
 3933             a = !1,
 3934             s = void 0;
 3935         try {
 3936             for (var u, l = Object.keys(t)[Symbol.iterator](); !(i = (u = l.next()).done); i = !0) {
 3937                 var c = u.value;
 3938                 n[c] = o.requestSetting(c, t[c])
 3939             }
 3940         } catch (e) {
 3941             a = !0, s = e
 3942         } finally {
 3943             try {
 3944                 !i && l.return && l.return()
 3945             } finally {
 3946                 if (a) throw s
 3947             }
 3948         }
 3949         return r({}, e, {
 3950             settings: n,
 3951             cachedSettings: n
 3952         })
 3953     };```

[NoiSek]

From those logs, it looks like somehow your environment is using a version of Webkit that doesn't support Symbol.

Symbol is a builtin that was fully supported in Chrome 38 / Safari 9 to give you an idea of how far back that support goes, not that GTK updates it's version of Webkit very regularly anywho.

I would suggest trying to upgrade the web-greeter to the latest you have available or building from source if you can.

[BroccoliRaab]

I Installed web-greeter from source from this repo: https://github.com/Antergos/web-greeter
Now lightdm won't start, but I get that that's its no longer an issue that pertains to this project so I'll update when I get that working and if that fixed this problem.

I was running lightdm-webkit-greeter 2.0.0 which was released in 2016