sequential queueing of cells not working

[leoscholl]

I'm having issues similar to #5098 #4825 and #6794 which are all unresolved.

• Jupyter version 6.5.4
• OS: ubuntu 20.04

When i first run cells in a new notebook, new environment with just python3.9 and ipykernel, things work fine.

But if I try to queue up some more cells, only the first one runs.

Notice the "executed in 0ms" messages after trying to run those cells.

In the jupyter console I get these "Kernel does not exist" messages, not sure if it is related or not:

[I 15:02:27.694 NotebookApp] Starting buffering for 9216ccef-4201-4342-bc52-a028f811bfca:b304d623d91440c28393f63ec065f24e
[I 15:02:27.936 NotebookApp] Kernel restarted: 9216ccef-4201-4342-bc52-a028f811bfca
[I 15:02:27.955 NotebookApp] Restoring connection for 9216ccef-4201-4342-bc52-a028f811bfca:b304d623d91440c28393f63ec065f24e
CONDA_PREFIX=/home/aolab/miniconda3/envs/jupyter-test
[I 15:02:28.959 NotebookApp] Replaying 3 buffered messages
[W 15:02:36.955 NotebookApp] 404 GET /api/kernels/10e459da-d08b-49dc-a304-fe18f07016aa/channels?session_id=965d2597cca643449e915aff27ecf6b6 (128.95.205.111): Kernel does not exist: 10e459da-d08b-49dc-a304-fe18f07016aa
[W 15:02:36.956 NotebookApp] 404 GET /api/kernels/10e459da-d08b-49dc-a304-fe18f07016aa/channels?session_id=965d2597cca643449e915aff27ecf6b6 (128.95.205.111) 2.120000ms referer=None

This wasn't a problem until about a month ago when it started happening all the time. Don't know what changed. Tried updating notebook and ipykernel but neither made a difference.

[leoscholl]

update: if i use "Run All Below" instead of hitting shift-enter a bunch, the queueing works fine..

[JasonWeill]

@leoscholl Thanks for your contribution! Which browser are you using? Does the bug still occur if you try a different browser or the same browser in private/etc mode, without extensions?

Also, have you tried using the Notebook 7 beta? Does this error recur in the newer version?

[leoscholl]

I’m using the latest chrome on windows, it’s version 114.0.5735.110
I’ve tried chrome on windows, mac, Linux. Incognito also. No difference. Firefox and safari are the same.

Have not tried notebook 7 beta. Is it possible to install side by side with 6?

[jtpio]

Have not tried notebook 7 beta. Is it possible to install side by side with 6?

You can install it side-by-side with NBClassic (which provides the classic notebook 6 UI): https://jupyter-notebook.readthedocs.io/en/latest/migrating/multiple-interfaces.html

[RRosio]

Hi @leoscholl, please try this out in Notebook 7. This might not be something that we can fix in Notebook 6 at the moment.

[divyabiyani]

@RRosio, I am facing the same issue currently with the following version of core packages

IPython : 8.4.0
ipykernel : 6.14.0
ipywidgets : not installed
jupyter_client : 8.3.0
jupyter_core : 5.3.1
jupyter_server : 2.7.0
jupyterlab : 4.0.2
nbclient : 0.8.0
nbconvert : 7.6.0
nbformat : 5.9.1
notebook : 7.0.0rc2
qtconsole : not installed
traitlets : 5.9.0

@leoscholl , Was this issue resolved for you with notebook 7?

[divyabiyani]

@RRosio, Could you help with this issue. It is still occurring with notebook 7 as well.

[leoscholl]

Was this issue resolved for you with notebook 7?

I am using jupyterlab now with no issues. Have not tried notebook 7.