Ubuntu - Agent Execution Time Out

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Hey, this is a known class of bugs with the extension host on our side ERROR_EXTENSION_HOST_TIMEOUT. The request doesn’t even reach the backend, so you get the error after about 30 seconds on any prompt. No ETA for a fix yet.

A few steps that often help:

  1. Reload Window: Ctrl+Shift+P then Developer: Reload Window. If that doesn’t help, fully restart Cursor.
  2. Disable extensions: run cursor --disable-extensions in your terminal and see if it still happens. If it stops, some extension is crashing the host.
  3. Developer Tools: Help → Toggle Developer Tools then open the Console tab. Send the errors from there if you see any.
  4. On Ubuntu with kernel 5.19, clearing the cache sometimes helps. Close Cursor and delete ~/.config/Cursor/Cache, ~/.config/Cursor/CachedData, ~/.config/Cursor/Code Cache.

If nothing helps, run Ctrl+Shift+P then Developer: Export Logs and attach the zip, I’ll take a closer look. Your kernel version is pretty old 5.19.0-46, so if you can update to a newer one, it’s also worth trying.