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Can't open TUI running on a remote Omnissa Horizon machine #7116

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opened 2026-02-16 18:06:13 -05:00 by yindo · 3 comments
yindo commented 2026-02-16 18:06:13 -05:00
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Originally created by @fdittz on GitHub (Jan 21, 2026).

Originally assigned to: @kommander on GitHub.

Description

When I try opening opencode on this remote machine(Omnissa Horizon) running Red Hat 8 and Gnome 3.32, using gnome-terminal, I get a black screen with the string >4;1m Gi=31337,s=1,v=1,a=q,t=d,f=24;AAAA and it freezes, I cant ctrl+c or ctrl+z out of it, seems that it tries to print the starting screen and fails.

I tried with kitty and I don't get this string, just a blank screen, but i'm getting the following on STDERR
[4.535] [PARSE ERROR] Unsupported screen mode: 2027 (private)

Tried WezTerm and tmux, no luck. Also tried running on a container and the same issue happens. Is there anything I can do on my remote machine to solve this?

Plugins

No response

OpenCode version

1.1.30

Steps to reproduce

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Screenshot and/or share link

Image

Operating System

Red Hat Enterprise Linux release 8.10 (Ootpa), GNOME Shell 3.32.2

Terminal

gnome-terminal, kitty, wezterm, tmux

Originally created by @fdittz on GitHub (Jan 21, 2026). Originally assigned to: @kommander on GitHub. ### Description When I try opening opencode on this remote machine(Omnissa Horizon) running Red Hat 8 and Gnome 3.32, using gnome-terminal, I get a black screen with the string `>4;1m Gi=31337,s=1,v=1,a=q,t=d,f=24;AAAA` and it freezes, I cant ctrl+c or ctrl+z out of it, seems that it tries to print the starting screen and fails. I tried with kitty and I don't get this string, just a blank screen, but i'm getting the following on STDERR `[4.535] [PARSE ERROR] Unsupported screen mode: 2027 (private)` Tried WezTerm and tmux, no luck. Also tried running on a container and the same issue happens. Is there anything I can do on my remote machine to solve this? ### Plugins _No response_ ### OpenCode version 1.1.30 ### Steps to reproduce _No response_ ### Screenshot and/or share link <img width="613" height="128" alt="Image" src="https://github.com/user-attachments/assets/27a54992-1d22-4c25-a953-575befda2d55" /> ### Operating System Red Hat Enterprise Linux release 8.10 (Ootpa), GNOME Shell 3.32.2 ### Terminal gnome-terminal, kitty, wezterm, tmux
yindo added the opentuibug labels 2026-02-16 18:06:13 -05:00
yindo commented 2026-02-16 18:06:14 -05:00
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@github-actions[bot] commented on GitHub (Jan 21, 2026):

This issue might be a duplicate of or related to existing terminal rendering issues. Please check:

  • #9814: Garbled characters appear after launching the program on Windows system
  • #9338: TUI rendering with random characters like â and € on Windows 11
  • #9798: The Windows Terminal interface is not displaying correctly after answering a question
  • #9823: Something is wrong with the terminal UI - shadow covering the display
  • #9750: The UI is broken when running on built-in terminal (macOS)
  • #9899: The TUI is merging lines of text when the terminal window is small
  • #9505: Desktop app fails to start on Linux/Wayland - terminal-related errors

The core issue appears to be related to terminal capability detection or screen mode negotiation, particularly with the ANSI escape sequences: >4;1m\n\Gi=31337,s=1,v=1,a=q,t=d,f=24;AAAA and parse errors about "Unsupported screen mode: 2027 (private)". This suggests a potential incompatibility with certain terminal emulators or terminal configurations, particularly on remote machines with GNOME 3.32.

Feel free to ignore if none of these address your specific case.

@github-actions[bot] commented on GitHub (Jan 21, 2026): This issue might be a duplicate of or related to existing terminal rendering issues. Please check: - #9814: Garbled characters appear after launching the program on Windows system - #9338: TUI rendering with random characters like â and € on Windows 11 - #9798: The Windows Terminal interface is not displaying correctly after answering a question - #9823: Something is wrong with the terminal UI - shadow covering the display - #9750: The UI is broken when running on built-in terminal (macOS) - #9899: The TUI is merging lines of text when the terminal window is small - #9505: Desktop app fails to start on Linux/Wayland - terminal-related errors The core issue appears to be related to terminal capability detection or screen mode negotiation, particularly with the ANSI escape sequences: `>4;1m\n\Gi=31337,s=1,v=1,a=q,t=d,f=24;AAAA` and parse errors about "Unsupported screen mode: 2027 (private)". This suggests a potential incompatibility with certain terminal emulators or terminal configurations, particularly on remote machines with GNOME 3.32. Feel free to ignore if none of these address your specific case.
yindo commented 2026-02-16 18:06:14 -05:00
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@KevinWang676 commented on GitHub (Jan 21, 2026):

ran into the same issue here on my windows machine

@KevinWang676 commented on GitHub (Jan 21, 2026): ran into the same issue here on my windows machine
yindo commented 2026-02-16 18:06:14 -05:00
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@fdittz commented on GitHub (Jan 26, 2026):

Seems that its not an issue with TUI, but with bun running on NFS. As I'm using a horizon remote terminal, all directories I have access to are NFS shares, so bun has troubles with the hardlinks and fails with FileNotFoundError.

The issue https://github.com/anomalyco/opencode/issues/4442 describes it perfectly, adding --backend=copyfile to the install and add commands solved my issue on a fortk, I wonder if we could have it set by an envvar?

@fdittz commented on GitHub (Jan 26, 2026): Seems that its not an issue with TUI, but with bun running on NFS. As I'm using a horizon remote terminal, all directories I have access to are NFS shares, so bun has troubles with the hardlinks and fails with FileNotFoundError. The issue https://github.com/anomalyco/opencode/issues/4442 describes it perfectly, adding --backend=copyfile to the install and add commands solved my issue on a fortk, I wonder if we could have it set by an envvar?
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Reference: anomalyco/opencode#7116
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