Computer screen flickering

On my server, my computer started to blink like the screen is cleared and rewrited again and again. It's the first time it does that. On my own program I made, all is fine, but it blinks when I'm using edit or even in the shell.

Maybe you got a bad ping causing minecraft to update the CC screen too slow?

My bet is that you're only seeing this when you're actually typing into edit/shell. Under CC 1.74, those scripts now clear and redraw the line whenever you enter a character, in a manner that'll indeed lead to flicker if your system's under load or if you're playing online. It's to do with the auto-complete functionality, though it could indeed be coded to work without blanking the line over and over.

Not that you bothered to mention your version, or the other details the "how to post a bug" thread calls for.

its usually either the ram or something, causing cc to lag when you type. but with what bomb bloke said, it could also be the autocomplete.
does it happen if your typing some word it wouldn't autocomplete?
like… pneumonoultramicroscopicsilicovolcanoconiosis?

Wait_, on 01 August 2015 - 01:54 AM said:

its usually either the ram or something, causing cc to lag when you type. but with what bomb bloke said, it could also be the autocomplete.
does it happen if your typing some word it wouldn't autocomplete?
like… pneumonoultramicroscopicsilicovolcanoconiosis?

I don't think it has to do with RAM. It is not autocomplete's fault, and it is not a bug.
It's just that the ComputerCraft update adding autocomplete changed the way the shell draws the command line.

Wait_, on 01 August 2015 - 01:54 AM said:

its usually either the ram or something, causing cc to lag when you type. but with what bomb bloke said, it could also be the autocomplete.
does it happen if your typing some word it wouldn't autocomplete?
like… pneumonoultramicroscopicsilicovolcanoconiosis?

That's noT what Bomb said, the issue isn't caused by autocomplete iteself. It is caused by the shell clearing and redrawing the entire line whenever something changes, wich was needed to make autocompleting work. What you actually type is not relevant here.

It's most likely something to do with shell.clear and/or shell.clearLine being very frequently called, lag also can make it worst.

flaghacker, on 01 August 2015 - 05:39 PM said:

It is caused by the shell clearing and redrawing the entire line whenever something changes, wich was needed

Really not "needed", but otherwise yeah.