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Altera_Forum's avatar
Altera_Forum
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11 years ago

USB-Blaster: Unable to read device chain - JTAG chain broken

I'm using Ubuntu14.04 and quartus14.1. When I run jtagconfig, I get: $ jtagconfig 1) USB-Blaster [3-6] Unable to read device chain - JTAG chain broken The hardware is correct becaus...
Pouya1's avatar
Pouya1
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3 years ago

I have the same problem for an Intel Stratix 10 MX FPGA installed in a workstation. The board is powered up using an 8-pin AUX connector (in addition to pcie slot). I'm running Ubuntu 18.04 LTS. A couple of days ago, when I was running jtagconfig everything worked perfectly (I could see the device name and jtag chain was also correct). But after a few days (I didnt touch anything or any commands or even I didnt program the fpga) when I entered the same command, jtag chain was broken:

1) Intel Stratix 10 MX FPGA Development Kit [1-14]

Unable to read device chain - JTAG chain broken

I tried all suggestions here in this forum, but none was helpful. I would appreciate it if you could help me with this.

Thank you!