Qt: Session management error: None of the authentication protocols specified are supported - Qt: Session management error: None of the authentication protocols specified are supported Description You may see this error message when running the Quartus® II software on Linux using a remote X display. Resolution To work around this problem, unset the SESSION_MANAGER environment variable before launching the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']