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Recently, I've installed a new SSD drive and deployed Ubuntu 22.04.04 on it. At first everything was perfect, but then I noticed that gnome-terminal has a significant input lag (up to a second) even for signals (e.g. Ctrl-C). I had tried a few of other GTK/VTE terminal emulators (i.e. gnome-console, xfce4-terminal and terminator) with the same result, while non-VTE terminals were perfectly fine (i.e. konsole, suckless st, kitty).

I would like to return to using gnome-terminal, but this issue annoys me a lot and I have no idea where to begin the investigation. Does anyone have any debug ideas? Thank you in advance.

dt@dt-535:~$ uname -a
Linux dt-535 6.5.0-26-generic #26~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Mar 12 10:22:43 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

UPDATE

Looks like it's a duplicate for this known Ubuntu issue.

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  • See A look at terminal emulators, part 2 for a speed comparison of terminals.
    – harrymc
    Commented Apr 7 at 16:34
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    Ubuntu messed up their mutter package. They're aware of the issue and are working on releasing a fix. See askubuntu.com/questions/1509058/… .
    – egmont
    Commented Apr 7 at 17:36
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    @harrymc VTE (more precisely, its version as of 6 years ago when that article was written) might have been somewhat worse in some aspects of performance than some others, but definitely by no means "significant input lag (up to a second)" as OP claims. It's not that.
    – egmont
    Commented Apr 7 at 17:40
  • @egmont, thank you
    – D_T
    Commented Apr 9 at 11:24

1 Answer 1

Reset to default
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For any users looking for a quick fix to this issue, I have found that Konsole is not GTK/mutter-based and is not suffering from this issue. Konsole can be installed on Gnome through the software store.

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    Commented Apr 14 at 7:55

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