Showing results for 
Search instead for 
Did you mean: 

Nios II Software Build Tools for Eclipse (Quartus Prime 18.1) frequently crashing

When debugging a project through the "debug" or "run" option eclipse frequently crashes. Find below 2 examples of the screens which appear when eclipse crashes. This is really annoying as you also manually have to kill the nios2-elf-gd.exe task as this keeps running. And makes developing really unstable. Is there any solution to this, any other users also experiencing this?


0 Kudos
2 Replies

Hello Mviss,

My apologize for this inconvenient tool crash. This is not common thing and few customer reported about this crash. there is no straightforward way to detect the root cause.

However, we do have some recommendations to our customers to try it out, and mostly one of those suggestions would help them:

  1. Change the workspace location.
  2. Create a new NIOS II aplciation.
  3. Clear the JAVA cache on your machine, simply go to control panel > Java > General > Temporary Internet files > Settings > Delete files.
  4. Un-install JAVA and re-install it.
  5. If all these things didnt work, then you might need a fresh installation of eclipse.

Also, is this crash come from any NIOS II application? or specific application?

Best regards,

Isaac Vazquez.


Hi Isaac,

The issues has been persistent for years now on our department with more developers experiencing this issue.It appears with:

  • Quartus 10.1sp1/11.0sp1/12.1/17.1/ 18.1/19.3/19.4. 
  • Windows 7, Windows 10
  • USB-Blaster Rev C., USB-Blaster II and Ethernet Blaster II.
  • NIOS II/e or NIOS II/f

It is common knowledge on our department and what we think that it might be vague related to using too many 'printf' calls with the jtag_uart_0. It is very annoying and only occurs during debug phase with Eclipse. 
I/we have worked on many PC's and different workspaces, different projects(thus different NIOS II applications but always the same crashing eclipse during debugging.

I got a bit tired/frustrated of this and thought why not ask on the forum. 

I don't think your suggestions help since I have just a fresh Win10 installation for 2 months and on my old Win7 machine the same problem occurs. Do the developers of the NIOS II SBT ever try to debug under windows with using 'printf' calls? I can't imagine that they never seen this problem.