If the register view in Arm DS-5 Altera Edition is left open viewing the content of registers located within the FPGA fabric when a debugging session is closed, the register view may hang when a new debug session is started.
This problem occurs because Arm DS-5 Altera Edition is not able to access the registers within the FPGA until the HPS bridges have been enabled.
To workaround this issue ensure that the register view in Arm DS-5 Altera Edition is closed or minimized before ending a debug session.
To resolve this issue if your register view has frozen:
1. Manually close the register view from the Window menu
2. Disconnect the active debug session
3. Start a new debug session and open the register view from the Window Menu (the register view will open with all register sets minimised).
This issue is scheduled to be fixed in a future version of Arm DS-5 Altera Edition.