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"Kernel died unexpectedly" after shutting down a kernel and opening a notebook again #1185

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jtpio opened this issue Oct 2, 2023 · 3 comments · Fixed by #1186
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"Kernel died unexpectedly" after shutting down a kernel and opening a notebook again #1185

jtpio opened this issue Oct 2, 2023 · 3 comments · Fixed by #1186
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jtpio commented Oct 2, 2023

Follow-up to the JupyterLab 4 / Notebook 7 update: #1019

The following steps trigger a "Kernel died unexpectedly" error dialog:

  • open an existing notebook
  • shut down the associated kernel via the running panel
  • close the notebook
  • open the notebook again
kernel-shutdown-open-error.mp4
@jtpio jtpio added the bug Something isn't working label Oct 2, 2023
@jtpio jtpio added this to the 0.2.0 milestone Oct 2, 2023
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jtpio commented Oct 2, 2023

This could be related to the change in jupyterlab/jupyterlab#13792 which is using the kernel manager, while it was using the sessions API before:

image

@jtpio jtpio self-assigned this Oct 2, 2023
@jtpio jtpio mentioned this issue Oct 3, 2023
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jtpio commented Oct 3, 2023

The running panel is also not accurately indicating when the same kernel is used in both a notebook and a console:

image

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jtpio commented Oct 3, 2023

The running panel is also not accurately indicating when the same kernel is used in both a notebook and a console:

Ah actually this might be an issue upstream in JupyterLab:

image

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Fix handling of kernels and sessions jtpio/jupyterlite
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