claude-code - 💡(How to fix) Fix [Feature Request] ultrathink should default to MAX or XHIGH effort level [1 comments, 2 participants]

[{"error":"Error: NON-FATAL: Lock acquisition failed for /home/azidan/.local/share/claude/versions/2.1.112 (expected in multi-process scenarios)\n at qd$ (/$bunfs/root/src/entrypoints/cli.js:2750:2177)\n at $e8 (/$bunfs/root/src/entrypoints/cli.js:2750:1257)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-17T00:14:53.575Z"}]

TL;DR

The issue may be resolved by adjusting the effort level to MAX or XHIGH as the current "high" setting is now considered the new middle option.

Guidance

• Review the error message indicating a "Lock acquisition failed" error, which may be related to multi-process scenarios, and consider adjusting the effort level as a potential workaround.
• Verify the current effort level setting and its impact on the application's behavior to determine if adjusting it to MAX or XHIGH resolves the issue.
• Investigate the cli.js file at line 2750 to better understand the lock acquisition failure and its relation to the effort level setting.
• Consider checking the documentation or configuration options for the ultrathink application to see if there are any specific guidelines for setting the effort level in multi-process scenarios.

Example

No code snippet is provided as the issue does not contain sufficient information to create a relevant example.

Notes

The provided error message suggests a potential issue with lock acquisition in multi-process scenarios, but the exact cause and relation to the effort level setting are unclear. Further investigation is needed to determine the root cause and the most effective solution.

Recommendation

Apply workaround: Adjust the effort level to MAX or XHIGH as a potential solution, as the current "high" setting may no longer be sufficient.