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I've tried this on three machines with no luck soooo...
Current Platform Quartus 15.1 / CentOS release 6.7 I've downgraded this box from usb xhci which had issues Now - as root # jtagd --foreground --debug JTAG daemon started Using config file /etc/jtagd/jtagd.conf Remote JTAG permitted when password set USB-Blaster firmware download ok (23ms) USB-Blasters reconfigured, waiting for them to come back USB-Blaster "DE-SoC" firmware version 1.35 USB-Blaster endpoints out=04(512), in=88(512); urb size=4096 USB-Blaster firmware for 09FB/6010 is version 1.35 USB-Blaster added "DE-SoC [2-1]" Device /dev/bus/usb/002/036 remove Device /dev/bus/usb/002/037 add and as soon as i run #jtagconfig 1) DE-SoC [2-1] Unable to lock chain - Hardware not attached this is nonsense as above it found the firmware ver .... & the debug stream says : USB-Blaster port (/dev/bus/usb/002/037) can't reset interface (71) USB-Blaster port (/dev/bus/usb/002/037) can't reset interface (71) permissions are wide open crwxrwxrwx. 1 root root 189, 162 Jul 19 20:08 /dev/bus/usb/002/037 I have 'occasionally ' got jtagconfig to recognize the chips on the board but as soon as i try writing / query from SignalTap it complains the same refrain: "Unable to lock chain - Hardware not attached" works fine with a DE0-nano ... so any clues ? -- I've pretty much debuged with a external logic analyser( and printf) till now ... but that is getting difficult for many aspects ....Link Copied
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