Re: latest iterm2 hangs since a few days

[Frederic Beuserie]

also, 

this takes some miliseconds and nothing freeze (25K lines)

tar -tf xxx.tar | wc -l 

this freeze for 10 seconds the ui and i cannot bring iterm terminal back by using the dock and ctrl-tab or anything

tar -tf xxx.tar

frédéric.

On Sat, May 2, 2026 at 1:15 PM Frederic Beuserie <fbeu...@gmail.com> wrote:

Hello,

i'm running latest iterm2 on a mac book air M4.

i only experience this behavior with iterm2 and everything else run normal

it happended first i think after my latest osx update a few weeks ago. i'm now running 26.4.1 (25E253)

the most obvious symptom is just open a terminal on local machine, 

and run a command that output like 200 ou 300 lines (ex: php -i).

it hangs 5 seconds, nothing respond, terminal doesn't refresh, turning ball and all.

same for a "docker compose build" that output a lot of lines.

even somtimes navigating the settings and closing a confirmation dialog freeze for a while.

any idea where to looks ?

thanks

[Frederic Beuserie]

[George Nachman]

Thanks for the detailed report. A sample taken while iTerm2 is frozen will tell us exactly what it's stuck on, which is the fastest way to make progress.

Since iTerm2 itself is the thing hanging, you'll need to capture the sample from another app — Terminal.app works well. Here's the easiest way:

1. Open Terminal.app (or any other terminal).

2. Reproduce the freeze in iTerm2 — for example, run tar -tf xxx.tar so the UI is hung with the spinning beachball.

3. While it's still frozen, switch to Terminal.app and run:

sample iTerm2 5 -file ~/Desktop/iterm2-sample.txt

3. That captures 5 seconds of stack traces.

4. Once it finishes, attach ~/Desktop/iterm2-sample.txt to a reply.

It would also help to know the iTerm2 version: please send the exact version from iTerm2 > About iTerm2 (e.g., 3.6.x or a beta build number). If you're not on the latest beta, it's worth trying that first. Go to Settings > General > Selection and set the update channel to “Latest Beta Test Release,” then check for updates.

The sample is the most important piece. Once I see where it's stuck I can almost certainly point at the cause.

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[Frederic Beuserie]

Hi,

attached:

iterm2-sample3.txt: sample just after hitting enter on tar command.

if it can helps, iterm2-sample4.txt: sample after validating the beta channel on the settings->general (also beachball for some seconds).

version from the about menu is: Build 3.6.10

after the latest beta, same problem.

feel free to ask if something can helps you.

frédéric

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