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## Bug: TUI freezes for 8-9 seconds in WSL2 with ble.sh #11145
Description
Description
Environment
- OpenCode version: 1.1.42
- OS: Ubuntu 24.04 on WSL2 (kernel 6.6.87.2-microsoft-standard-WSL2)
- Terminal: Windows Terminal
- Shell: Bash 5.x with ble.sh (Bash Line Editor)
- Hardware: Ryzen 7 9700X, 64GB DDR5, RTX 5080, NVMe SSD
Problem
OpenCode TUI freezes for 8-9 seconds at random intervals. The terminal window remains responsive but text content stops updating. This happens during normal usage while the agent is working.
What works fine in the same environment
- Claude Code — no freezes
- Codex — no freezes
Both use the same terminal, same shell, same ble.sh configuration.
What I've tried (none resolved the issue)
- Updated to latest OpenCode (1.1.42)
- Re-authenticated both providers (headless login)
- Disabled MCP servers (
"enabled": false) - Disabled experimental threaded mode (
"threaded": false) - Tuned WSL2 dirty page settings (sysctl)
- Changed clock source to
hyperv_clocksource_tsc_page - Optimized ble.sh settings (reduced highlighting, completion delays)
- Disabled
appendWindowsPathin wsl.conf
ble.sh config (~/.blerc)
bleopt highlight_filename=
bleopt highlight_variable=
bleopt complete_auto_delay=300
bleopt complete_polling_cycle=100
bleopt complete_auto_history=
bleopt syntax_eval_polling_interval=100
bleopt highlight_timeout_sync=300
bleopt highlight_timeout_async=3000
bleopt highlight_eval_word_limit=100
Suspicion
OpenCode's TUI rendering may have an incompatibility with ble.sh's input handling. Since Claude Code and Codex work fine, this appears to be specific to OpenCode's terminal/TUI implementation.
Related issues
- #731 (Critical Stability Issues: App Freezing & Hanging Analysis)
- #96 on ble.sh repo (WSL2 input delay — confirmed NOT caused by ble.sh itself)
### Plugins
No
### OpenCode version
1.1.42
### Steps to reproduce
_No response_
### Screenshot and/or share link
_No response_
### Operating System
Ubuntu 24.04 on WSL2 (kernel 6.6.87.2-microsoft-standard-WSL2)
### Terminal
Windows TerminalMetadata
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github-actions commentedon Jan 29, 2026
This issue might be a duplicate of existing issues. Please check:
Feel free to ignore if your case involves specific differences, but #5361 appears to be the primary tracking issue for the WSL2 TUI freezing regression.
akinomyoga commentedon Jan 30, 2026
This might also be related to akinomyoga/ble.sh#96.
@FAL1989 Could you try workarounds in the "Summary" section of the top comment in akinomyoga/ble.sh#96? Also, to narrow down the cause, could you tell us whether setting
bleopt complete_auto_complete=changes anything in the situation?BHQM-123 commentedon Mar 18, 2026
Just dropping a data point here～
I experienced the exact same TUI freeze (input buffered) on WSL2 + AMD Ryzen 5 5500. WinDbg analysis of the crash dump revealed that Node.js v25.8's JIT generated SIGILL (illegal instruction), causing the kernel to crash and restart.
Downgrading to Node.js v22 LTS resolved the issue completely, and the wsl-crashes folder no longer generates 6GB dump files!
More details in #18132 – hope this helps! (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
github-actions commentedon Jul 3, 2026
To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.