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arm-gnu-toolchain-12.2.rel1-x86_64-arm-none-eabi gdb fails on Ubuntu 22.04

gdb not working on Ubuntu 22.04 is a well known issue.

[This topic]( is focused on gcc-arm-11.2-2022.02-x86_64-arm-none-eabi where gdb doesn'tt work for some missing dependencies.

[The solution]( said that next release would have a better compatiblity with newer Linux distros.

And so I downloaded the new arm-gnu-toolchain-12.2.rel1-x86_64-arm-none-eabi.

gdb doesn't work, but now the error message from`gdb --version`is different:


Could not find platform independent libraries <prefix>

Could not find platform dependent libraries <exec_prefix>

Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]

Python path configuration:

  PYTHONHOME = (not set)

  PYTHONPATH = (not set)

  program name = '/usr/local/bld-tools/bld-tools-virtual-env/bin/python'

  isolated = 0

  environment = 1

  user site = 1

  import site = 1

  sys._base_executable = '/usr/local/bld-tools/bld-tools-virtual-env/bin/python'

  sys.base_prefix = '/usr'

  sys.base_exec_prefix = '/usr'

  sys.executable = '/usr/local/bld-tools/bld-tools-virtual-env/bin/python'

  sys.prefix = '/usr'

  sys.exec_prefix = '/usr'

  sys.path = [





Fatal Python error: init_fs_encoding: failed to get the Python codec of the filesystem encoding

Python runtime state: core initialized

ModuleNotFoundError: No module named 'encodings'

Current thread 0x00007fed232c0c00 (most recent call first):

<no Python frame>


This seems related to [this bug](

Is there any workaround?