Report linux desktop-related env vars in issue reporter

Fixes #94388

src/vs/code/electron-browser/issue/issueReporterModel.ts

@@ -168,6 +168,13 @@ ${this.getInfos()}
 |Screen Reader|${this._data.systemInfo.screenReader}|
 |VM|${this._data.systemInfo.vmHint}|`;
 
+			if (this._data.systemInfo.linuxEnv) {
+				md += `\n|DESKTOP_SESSION|${this._data.systemInfo.linuxEnv.desktopSession}|
+|XDG_CURRENT_DESKTOP|${this._data.systemInfo.linuxEnv.xdgCurrentDesktop}|
+|XDG_SESSION_DESKTOP|${this._data.systemInfo.linuxEnv.xdgSessionDesktop}|
+|XDG_SESSION_TYPE|${this._data.systemInfo.linuxEnv.xdgSessionType}|`;
+			}
+
 			this._data.systemInfo.remoteData.forEach(remote => {
 				if (isRemoteDiagnosticError(remote)) {
 					md += `\n\n${remote.errorMessage}`;
@@ -268,4 +275,4 @@ ${table}
 
 </details>`;
 	}
-}
+}

src/vs/code/electron-browser/issue/test/testReporterModel.test.ts

@@ -81,6 +81,55 @@ OS version: undefined
 <!-- generated by issue reporter -->`);
 	});
 
+	test('serializes Linux environment information when data is provided', () => {
+		const issueReporterModel = new IssueReporterModel({
+			issueType: 0,
+			systemInfo: {
+				os: 'Darwin',
+				cpus: 'Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 x 2800)',
+				memory: '16.00GB',
+				vmHint: '0%',
+				processArgs: '',
+				screenReader: 'no',
+				remoteData: [],
+				gpuStatus: {},
+				linuxEnv: {
+					desktopSession: 'ubuntu',
+					xdgCurrentDesktop: 'ubuntu',
+					xdgSessionDesktop: 'ubuntu:GNOME',
+					xdgSessionType: 'x11'
+				}
+			}
+		});
+		assert.equal(issueReporterModel.serialize(),
+			`
+Issue Type: <b>Bug</b>
+
+undefined
+
+VS Code version: undefined
+OS version: undefined
+
+<details>
+<summary>System Info</summary>
+
+|Item|Value|
+|---|---|
+|CPUs|Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 x 2800)|
+|GPU Status||
+|Load (avg)|undefined|
+|Memory (System)|16.00GB|
+|Process Argv||
+|Screen Reader|no|
+|VM|0%|
+|DESKTOP_SESSION|ubuntu|
+|XDG_CURRENT_DESKTOP|ubuntu|
+|XDG_SESSION_DESKTOP|ubuntu:GNOME|
+|XDG_SESSION_TYPE|x11|
+</details>Extensions: none
+<!-- generated by issue reporter -->`);
+	});
+
 	test('serializes remote information when data is provided', () => {
 		const issueReporterModel = new IssueReporterModel({
 			issueType: 0,

src/vs/platform/diagnostics/common/diagnostics.ts

@@ -13,6 +13,14 @@ export interface IMachineInfo {
 	cpus?: string;
 	memory: string;
 	vmHint: string;
+	linuxEnv?: ILinuxEnv;
+}
+
+export interface ILinuxEnv {
+	desktopSession?: string;
+	xdgSessionDesktop?: string;
+	xdgCurrentDesktop?: string;
+	xdgSessionType?: string;
 }
 
 export interface IDiagnosticInfo {

src/vs/platform/diagnostics/node/diagnosticsService.ts

@@ -11,7 +11,7 @@ import { parse, ParseError, getNodeType } from 'vs/base/common/json';
 import { listProcesses } from 'vs/base/node/ps';
 import product from 'vs/platform/product/common/product';
 import { repeat, pad } from 'vs/base/common/strings';
-import { isWindows } from 'vs/base/common/platform';
+import { isWindows, isLinux } from 'vs/base/common/platform';
 import { URI } from 'vs/base/common/uri';
 import { ProcessItem } from 'vs/base/common/processes';
 import { IMainProcessInfo } from 'vs/platform/launch/common/launch';
@@ -336,11 +336,19 @@ export class DiagnosticsService implements IDiagnosticsService {
 			remoteData
 		};
 
-
 		if (!isWindows) {
 			systemInfo.load = `${osLib.loadavg().map(l => Math.round(l)).join(', ')}`;
 		}
 
+		if (isLinux) {
+			systemInfo.linuxEnv = {
+				desktopSession: process.env.DESKTOP_SESSION,
+				xdgSessionDesktop: process.env.XDG_SESSION_DESKTOP,
+				xdgCurrentDesktop: process.env.XDG_CURRENT_DESKTOP,
+				xdgSessionType: process.env.XDG_SESSION_TYPE
+			};
+		}
+
 		return Promise.resolve(systemInfo);
 	}