[AVaRICE-user] problems debugging with brand new Atmel-ICE

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Hi,

I had problems with flash programming with my old MKII and therefore
bought a new Atmel-ICE.
My PC is running on linux and I can use this new debugger with your
version Version 6.3-20171130 for programming but somehow not for debugging.

So at the moment I can use my mkII for debugging and the Atmel-ICE for
programming - it's somehow weird and I need to solve this problem for
the Atmel-ICE ;-)

For the MKII I use the sequence
      *  avarice --jtag usb --mkII :4242*
and was afterwards able to start debugging via eclipse. Very simple.

If I adapt this sequence for the new debugger
        *avarice --jtag usb --edbg :4242*
just nothing happens, which means the output is
       *         AVaRICE version 2.14svn20200906, Sep 28 2021 21:09:28**
**                Defaulting JTAG bitrate to 250 kHz.*
and it ends.

I read (https://sourceforge.net/p/avarice/bugs/29/ ,  Joerg Wunsch) I
might have to use this out of a gdb session like
        *gdb avrice*
and then
        *(gdb) run -1 -j usb :4242
*the output is*
                 Starting program: /usr/local/bin/avarice -1 -j usb :4242
                [Thread debugging using libthread_db enabled]
                Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".
                AVaRICE version 2.14svn20200906, Sep 28 2021 21:09:28
                Defaulting JTAG bitrate to 250 kHz.
                did not find any USB device "usb"
                [Inferior 1 (process 260701) exited with code 01]  
*Looking up the atmel-ice usb device:
        *(gdb) run -1 -j /dev/bus/usb/001/048 :4242**
*the output is*
                Starting program: /usr/local/bin/avarice -1 -j
/dev/bus/usb/001/048 :4242
                [Thread debugging using libthread_db enabled]
                Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".
                AVaRICE version 2.14svn20200906, Sep 28 2021 21:09:28
                Defaulting JTAG bitrate to 250 kHz.
                [Inferior 1 (process 260758) exited with code 01]

*So in summary I got stuck somehow and don't really know how to go on.
Can someone point me into the right direction how to initiate a debug
session with avarice and the Atmel-ICE?

Kind regards,
Matthias
**