Why is rx_freqlocked stuck low after channel reconfiguration when using multiple reconfiguration controllers in Cyclone IV GX devices? - Why is rx_freqlocked stuck low after channel reconfiguration when using multiple reconfiguration controllers in Cyclone IV GX devices? Description rx_freqlocked may be stuck low after channel reconfiguration when using multiple reconfiguration controllers in Cyclone ® IV GX devices due to a bug in Quartus ® II software versions 12.0 and earlier. Resolution To work around this problem, install Quartus II software version 12.0 or later. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 10.0 ['Cyclone® IV GX FPGA'] ['novalue'] ['novalue'] ['novalue']