Forum Discussion

mstock's avatar
mstock
Icon for New Contributor rankNew Contributor
6 years ago

jtagd JTAG chain broken on Ubuntu 19.04 only on logical cable 1

On Ubuntu releases post-16.04, I've always had a difficult or impossible time getting devices to program (MAX10-lite, DE2i-150, DE10-standard, etc). I've gone through all of the standard things (USB ...
YuanLi_S_Intel's avatar
YuanLi_S_Intel
Icon for Regular Contributor rankRegular Contributor
6 years ago

Hi Matthew,

So you are saying that in Quartus v15.1, the JTAG Chain broken issue is no longer there. But in Quartus v19.1, the JTAG Chain broken issue is existed for DE2i-150 and DE10-lite?

Just would like to check, have you tried to compile the design in v19.1 before program using v19.1?

Thank You.

mstock's avatar
mstock
Icon for New Contributor rankNew Contributor
6 years ago

Yes, this is compiling in 19.1. The issue isn't in the generation of the pof/sof files, it's in the programming. Something changed between the older programmer releases and the newer. Specifically, it appears to be the jtagd process. If the jtagd process (which does the actual communications with USB) is running from the 19.1, the 15.1 or 13.0 programmers will connect but fail. If I kill that jtagd (or simply don't load it up on 19.1) and have the 15.1 or 13.0 release jtagd run, everything works as expected. I have not tried to run the 15.1 jtagd by hand and test 19.1, but I intend to give that a try later.

Matt