X2Go Bug report logs - #1618
x2go on Ubuntu MATE 22.04.3 LTS host & client reorders key presses

version graph

Package: x2goserver; Maintainer for x2goserver is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goserver is src:x2goserver.

Reported by: Christian Kothe <christiankothe@gmail.com>

Date: Sun, 17 Dec 2023 18:30:02 UTC

Severity: normal

Found in version 4.1.0.3

Full log

Message #10 received at 1618@bugs.x2go.org (full text, mbox, reply):

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From: Christian Kothe <christiankothe@gmail.com>
Date: Sun, 11 Feb 2024 07:33:06 -0800
Message-ID: <CAFfSDugdU0kSUyjDmGVhH_k7rFHiFw9USqDFN=7xOtS+S1cRAw@mail.gmail.com>
Subject: Additional information to aid reproducibility:
To: 1618@bugs.x2go.org
Content-Type: multipart/related; boundary="00000000000061de9406111ce1d6"

[Message part 1 (text/plain, inline)]
The bug can be reproduced by running a test script that simulates
successive key presses in sequence at high (touch-typing) rates. The
attached screenshot shows the local copy of that script in the top half and
the key presses as they appear in a terminal window on the remote machine
in the bottom half. The annotations show that there is on average one
reordering every 7-8 closely timed keystrokes.

[image: testcase-annotated.png]

The script code is (you may have to run pip install pyautogui to install
the dependency into your python interpreter):
import time
import pyautogui

time.sleep(5)
for k in range(10):
    pyautogui.press(list('0123456789abcdefghijklmnopqrstuvwxyz'))
    pyautogui.press('enter')
    time.sleep(1)

Note that the editor is PyCharm (a popular Java-based IDE), which is a bit
more CPU-intensive than some other software during editing, so this could
well have something to do with it. If you want to test it with that,
PyCharm is freely available from: https://www.jetbrains.com/pycharm/

Thanks for your attention,
Christian

[Message part 2 (text/html, inline)]
[testcase-annotated.png (image/png, inline)]

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