ARM DStudio can't detect Juno CPU core via DStream

Hi ,

I'm debugging Linux kernel on Juno via DStream and the latest ARM DStudio, but it reports the bellow error information. I ensure that the Jtag cable is functional, please see the attached files.  of course, we have the valid lisence. whether you have any suggestion to fix this issue?

! Unable to connect to device JunoR2SystemControl
! No voltage detected on target.



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