Fix issue with media permissions on Linux (#3355)

src/main/permissionsManager.test.js

@@ -60,6 +60,7 @@ jest.mock('main/windows/mainWindow', () => ({
 
 describe('main/PermissionsManager', () => {
     describe('setForServer', () => {
+        if (process.platform !== 'linux') {
             it('should ask for media permission when is not granted but the user explicitly granted it', () => {
                 systemPreferences.getMediaAccessStatus.mockReturnValue('denied');
                 const permissionsManager = new PermissionsManager('anyfile.json');
@@ -67,6 +68,7 @@ describe('main/PermissionsManager', () => {
                 expect(systemPreferences.askForMediaAccess).toHaveBeenNthCalledWith(1, 'microphone');
                 expect(systemPreferences.askForMediaAccess).toHaveBeenNthCalledWith(2, 'camera');
             });
+        }
     });
 
     describe('handlePermissionRequest', () => {

src/main/permissionsManager.ts

@@ -95,7 +95,7 @@ export class PermissionsManager extends JsonFileManager<PermissionsByOrigin> {
     };
 
     setForServer = (server: MattermostServer, permissions: Permissions) => {
-        if (permissions.media?.allowed) {
+        if (permissions.media?.allowed && (process.platform === 'win32' || process.platform === 'darwin')) {
             this.checkMediaAccess('microphone');
             this.checkMediaAccess('camera');
         }