I can’t open my terminal

[John728]

Failed to execute default Terminal Emulator.
Input/output error.

I also noticed that add/remove software cannot be started.

[Teo]

You can always hit CTRL+ALT+F2 to try to diagnose and fix things in TTY.
Or chroot from within a live session.

Without more relevant information nobody can help further.

[HowTo] Find system information

Difficulty: ★☆☆☆☆ Rather than providing the commercial reference of a computer or piece of hardware, it is usually better to directly ask the system to describe itself. On top of saving time to everyone, this also often provides more details, including something specific to the running system. Below is a (not exhaustive) list of commands for retrieving system information. If you don’t know how to use those commands, or how to provide them to support, see: [HowTo] Use the terminal / TTY …

[HowTo] Request support

Difficulty: ★☆☆☆☆ Strong of its many members, the Manjaro support forum can provide you help whenever you have an issue with your Manjaro installation. But in order to work efficiently, we shall also ask you to follow three major points. Provide context Simply signaling an issue is rarely enough to understand how it occurred. It is thus important to provide details on how it happened: Detail prior actions leading to the issue. List solutions and guides you already tried, with links when…

[bedna]

Or as in my case, ctrl+alt+F3 because for some reason, a few months back my tty moved from 1 to 2 (1 is my boot chatter that never disappears) and was confirmed was a bug and would move back, but it never has.

Just so OP does not get confused if nothing happens with F2

[kisun]

@John728

Input/output error.

Hello @John728,

I also had this error once before. Could it be that your disk is full?

What says this command:

df /

[John728]

According to Thunar, I still have 61.4 gb of free space

[arun.sebastian]

The same issue have mensioned in ubuntuforums. Change the default terminal emulator in Settings Manager → Preferred Applications

[John728]

I have only one choice

[Nachlese]

As @bedna suggested:

@bedna

ctrl+alt+F3

to get to a TTY (text ony terminal)

• refresh your mirrors
• run a system update using pacman
  ( I think the command is:
  pacman -Syyu)

See whether this changes the situation.

ctrl+alt+F7
should bring you back - or reboot

Next you can install one or two other terminal emulators, for example:
pacman -S rxvt-unicode
and/or
pacman -S xterm
and/or
pacman -S lxterminal

Then you do have more than one choice …

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@John728

According to Thunar, I still have 61.4 gb of free space

How big is your disk?
inxi -Fazy
should contain all relevant information - but it could be difficult for you to post the output from a TTY

… if your disk is (for example) 1TB
it could well be that it is already full.

… with 61 GB free for the root user - but not for you as a normal user
ext4 will reserve 5% for root, but that is not accessible for a normal user …

5% is a real waste for large disks - but it still is the default
This can easily be changed/lowered to 1% for instance - which is still way too much …

[John728]

@Nachlese

How big is your disk?

238.17 GiB

[Nachlese]

So your disk is 3/4 full - and thus this is not the cause of the issue.
like one of my teachers often said:
put it on ice and keep it warm …
(it still means that ~ 12 GB are reserved for root only and not accessible to you …)

and focus on the first part of the above post instead

[John728]

I also noticed that the viewnior app won’t open

[Nachlese]

That additional info isn’t actually adding anything new.

Go and address the issue. Please.

• refresh mirrors
• run a system update

Give feedback along the way if need be.