Hi K, Thanks for the detailed response. I think I've got this mostly solved now. I was having some other problems with conda. The unofficial package for my distribution defaulted to installing conda base/root at /usr and causing a lot of confusion for me. I noticed on the xeus-cling github, they say NOT to use conda but to use miniconda - I reinstalled jupyter and xeus-cling with miniconda - based in my home dir - and the kernel launches no problem now. My next step is to try and enable code completion via jupyter-lsp language server protocol. The installation docs call for a specific env - conda create -c conda-forge -n lsp 'python >=3.7,<3.8' 'jupyterlab=2.2.0' 'nodejs >=10.12,<15' 'jupyter-lsp-python=0.9.3' - which I created and the kernel is not starting but the message is different.
- [I 18:44:40.874 LabApp] Build is up to date - [I 18:44:49.578 LabApp] Creating new notebook in /[I 18:44:40.874 LabApp] Build is up to date - [I 18:44:49.578 LabApp] Creating new notebook in / - /usr/bin/xcpp: error while loading shared libraries: libsodium.so.23: cannot open shared object file: No such file or directory - [I 18:44:50.372 LabApp] Kernel started: 6d146c42-8da5-42e6-9eef-88f79b90d3d0, name: xcpp17 - [I 18:44:53.370 LabApp] KernelRestarter: restarting kernel (1/5), new random ports - /usr/bin/xcpp: error while loading shared libraries: libsodium.so.23: cannot open shared object file: No such file or directory I'm still learning how to conda - do I need to explicitly install xeus-cling in this env again? Do all envs inherit from the base env but not from each other? Hey, installing xeus-cling works - I now have some basic code completion! On Tuesday, March 9, 2021 at 3:53:19 PM UTC-8 [email protected] wrote: > Hi. This issue is indicative of the program that Jupyter server is > launching corresponding to your kernel is not running. The > AsyncIOLoopKernelRestarter is responsible for detecting unexpected > process termination and will attempt to restart the process up to 5 times > before giving up. As a result, you should probably troubleshoot this from > that aspect. > > To locate the problematic command, follow the instructions in the last > paragraph of this section of the documents: > https://jupyter-notebook.readthedocs.io/en/latest/troubleshooting.html#python-environments. > > It's unlikely that your issue is related to Python environments, but the > instructions for locating the program (in the argv stanza of the > kernel.json file) remain applicable. Once the program has been > identified, you might try starting it from the shell or some other way, to > get more information as to why it doesn't remain running. My guess is that > there's a dependency that is not installed or available to that environment > (so, I suppose it *could* be related to the python environment). > > I would also recommend adding --debug to your jupyter lab start command > to see if any DEBUG logging provides additional insights. > > > On Tuesday, March 9, 2021 at 12:28:24 PM UTC-8 [email protected] wrote: > >> >> I'm unable to start the c++ kernel. >> >> >> - [I 2021-03-09 12:19:56.467 LabApp] Build is up to date >> \[W 2021-03-09 12:19:59.117 ServerApp] Notebook >> vectors/Untitled1.ipynb is not trusted >> [W 2021-03-09 12:19:59.151 ServerApp] Notebook >> vectors/Untitled2.ipynb is not trusted >> [I 2021-03-09 12:20:02.440 ServerApp] Kernel started: >> 5a64e01c-9c1f-4946-a511-b58dd7ae4bae >> [I 2021-03-09 12:20:06.624 ServerApp] Kernel started: >> 9fa0e0fc-1ed5-4fc6-8899-05df3cbc97d7 >> [I 2021-03-09 12:20:06.682 ServerApp] Kernel started: >> 4ae2acb5-8754-4cc2-861b-4f5381ed11ac >> [I 2021-03-09 12:21:05.986 ServerApp] Kernel shutdown: >> 9fa0e0fc-1ed5-4fc6-8899-05df3cbc97d7 >> [I 2021-03-09 12:21:06.356 ServerApp] Kernel started: >> b16e42bc-229e-4002-8bbe-b4ca4eb37573 >> [I 2021-03-09 12:21:12.354 ServerApp] AsyncIOLoopKernelRestarter: >> restarting kernel (1/5), keep random ports >> [I 2021-03-09 12:21:15.367 ServerApp] AsyncIOLoopKernelRestarter: >> restarting kernel (2/5), keep random ports >> [I 2021-03-09 12:21:18.383 ServerApp] AsyncIOLoopKernelRestarter: >> restarting kernel (3/5), keep random ports >> [I 2021-03-09 12:21:21.395 ServerApp] AsyncIOLoopKernelRestarter: >> restarting kernel (4/5), keep random ports >> [W 2021-03-09 12:21:24.409 ServerApp] AsyncIOLoopKernelRestarter: >> restart failed >> [W 2021-03-09 12:21:24.410 ServerApp] Kernel >> b16e42bc-229e-4002-8bbe-b4ca4eb37573 died, removing from map. >> [I 2021-03-09 12:22:00.586 ServerApp] Saving file at >> /vectors/Untitled1.ipynb >> [W 2021-03-09 12:22:06.433 ServerApp] Timeout waiting for kernel_info >> reply from b16e42bc-229e-4002-8bbe-b4ca4eb37573 >> [E 2021-03-09 12:22:06.434 ServerApp] Error opening stream: HTTP 404: >> Not Found (Kernel does not exist: b16e42bc-229e-4002-8bbe-b4ca4eb37573) >> >> >> -- You received this message because you are subscribed to the Google Groups "Project Jupyter" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jupyter/39bcd2ad-27f5-412e-a03b-9bec0c8d0cfan%40googlegroups.com.
