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gemini-cli - 💡(How to fix) Fix Crash on startup: ioctl(2) failed, EBADF in UnixTerminal.resize

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Error Message

ERROR ioctl(2) failed, EBADF 241: throw new Error('resizing must be done using positive cols and rows'); An unexpected critical error occurred:Error: ioctl(2) failed, EBADF

Code Example

> /about
# CLI Version                                                              0.44.0                                                                                                                                   │
│ Git Commit                                                               1000b33d4                                                                                                                                │
│ Model                                                                    gemini-3.1-pro-preview                                                                                                                   │
│ Sandbox                                                                  no sandbox                                                                                                                               │
│ OS                                                                       linux                                                                                                                                    │
│ Auth Method                                                              Signed in with Google (nelson.enni@gmail.com)                                                                                            │
│ Tier                                                                     Gemini Code Assist in Google One AI Pro
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What happened?

The Gemini cli crashes.

ERROR ioctl(2) failed, EBADF

/home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/node_modules/@lydell/node-pty/unixTerminal.js:243:13

240: if (cols <= 0 || rows <= 0 || isNaN(cols) || isNaN(rows) || cols === Infinity || rows === Infinity) { 241: throw new Error('resizing must be done using positive cols and rows'); 242: } 243: pty.resize(this._fd, cols, rows); 244: this._cols = cols; 245: this._rows = rows; 246: };

  • UnixTerminal.resize (/home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/node_modules/@lydell/node-pty/unixTerminal.js:243:13)
  • _ShellExecutionService.resizePty (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-BE42OOYM.js:320262:30)
  • (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/interactiveCli-RDMZS6KL.js:6529:31)
  • commitHookEffectListMount (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:5260:30)
  • commitPassiveMountOnFiber (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6282:29)
  • recursivelyTraversePassiveMountEffects (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6263:13)
  • commitPassiveMountOnFiber (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6374:13)
  • recursivelyTraversePassiveMountEffects (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6263:13)
  • commitPassiveMountOnFiber (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6374:13)
  • recursivelyTraversePassiveMountEffects (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6263:13)

An unexpected critical error occurred:Error: ioctl(2) failed, EBADF at UnixTerminal.resize (/home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/node_modules/@lydell/node-pty/unixTerminal.js:243:13) at _ShellExecutionService.resizePty (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-BE42OOYM.js:320262:30) at file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/interactiveCli-RDMZS6KL.js:6529:31 at commitHookEffectListMount (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:5260:30) at commitPassiveMountOnFiber (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6282:29) at recursivelyTraversePassiveMountEffects (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6263:13) at commitPassiveMountOnFiber (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6374:13) at recursivelyTraversePassiveMountEffects (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6263:13) at commitPassiveMountOnFiber (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6374:13) at recursivelyTraversePassiveMountEffects (file:///home/enrique/.nvm/versions/node/v25.2.1/lib/node_modules/@google/gemini-cli/bundle/chunk-VUERI7WB.js:6263:13)

What did you expect to happen?

I expected it not to crash.

Client information

<details> <summary>Client Information</summary>

Run gemini to enter the interactive CLI, then run the /about command.

> /about
# CLI Version                                                              0.44.0                                                                                                                                   │
│ Git Commit                                                               1000b33d4                                                                                                                                │
│ Model                                                                    gemini-3.1-pro-preview                                                                                                                   │
│ Sandbox                                                                  no sandbox                                                                                                                               │
│ OS                                                                       linux                                                                                                                                    │
│ Auth Method                                                              Signed in with Google ([email protected])                                                                                            │
│ Tier                                                                     Gemini Code Assist in Google One AI Pro
</details>

Login information

Google Pro Subsciption

Anything else we need to know?

Tried it with Konsole and Kitty and script -q -c "gemini" /dev/null. I uninstalled and reinstalled via npm. I also update node via npm. Nothing fixes the crash.

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