No Auto-completion/Reference navigation on Linux

[ThibautHH]

Type: Bug

Behaviour

Expected vs. Actual

The language server and extension should allow for symbol navigation and completion suggestions but nothing is available.
No syntax highlighting is done on symbol resolution-dependent code (i.e. imported classes members etc)

Steps to reproduce:

Unknown, no error in shown in my log, except a warning about storage keys the warning went away, unrelated.

Diagnostic data

• Python version (& distribution if applicable, e.g. Anaconda): 3.11.3-2
• Type of virtual environment used: None
• Value of the python.languageServer setting: Default

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

2023-08-18 23:28:44.200 [info] Discover tests for workspace name: undefined - uri: /home/Thibaut/.config/Code/User/settings.json
2023-08-18 23:28:55.154 [info] Experiment 'pythonPromptNewFormatterExt' is active
2023-08-18 23:28:55.154 [info] Experiment 'pythonPromptNewToolsExt' is active
2023-08-18 23:28:55.154 [info] Experiment 'pythonTestAdapter' is active
2023-08-18 23:28:55.174 [info] Test server listening.
2023-08-18 23:28:55.177 [info] Python interpreter path: /bin/python
2023-08-18 23:28:56.888 [info] Starting Pylance language server.

User Settings

languageServer: "Pylance"

This issue was previously mentioned in #21831 and experienced by another user at the same time as it, though the issue itself seems unrelated.
As it was stated there, the issue is there on both the pre-release and release versions.

Extension version: 2023.15.12301911
VS Code version: Code 1.81.1 (6c3e3dba23e8fadc360aed75ce363ba185c49794, 2023-08-09T22:18:39.991Z)
OS version: Linux x64 6.4.10-arch1-1
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 7 5800H with Radeon Graphics (16 x 3328)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok video_decode: enabled video_encode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: disabled_off
Load (avg)	1, 1, 1
Memory (System)	14.97GB (8.88GB free)
Process Argv	--crash-reporter-id fcde559e-e694-42ec-a10a-1f160d5bfb15
Screen Reader	no
VM	0%
DESKTOP_SESSION	undefined
XDG_CURRENT_DESKTOP	undefined
XDG_SESSION_DESKTOP	undefined
XDG_SESSION_TYPE	undefined

[ThibautHH]

The problem was simply that the imports I had in the file were not resolvable because not in the PYTHON_PATH or any looked-up locations.

[Patschke]

As others may find this issue and are looking for a solution: I had the same problems, also running Arch linux. However, in my case imports were not faulty. What seemed to be an issue for me was that I had installed the "Pylance" extension as well. After uninstalling this, stuff started to work again.