This new script is using the functionality of display_info in the checkbox support that using dbus to control directly.

Author: hanhsuan

providers/base/bin/randr_cycle.py

@@ -0,0 +1,212 @@
+#!/usr/bin/env python3
+#
+# This file is part of Checkbox.
+#
+# Copyright 2025 Canonical Ltd.
+# Written by:
+#   Hanhsuan Lee <[email protected]>
+#
+# Checkbox is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3,
+# as published by the Free Software Foundation.
+#
+# Checkbox is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Checkbox. If not, see <http://www.gnu.org/licenses/>.
+
+
+from checkbox_support.helpers import display_info
+from checkbox_support.dbus.gnome_monitor import Mode
+from fractions import Fraction
+from typing import List
+import subprocess
+import argparse
+import tarfile
+import time
+import sys
+import os
+
+
+def resolution_filter(modes: List[Mode]):
+    """
+    For filtering resolution then returning needed,
+    Following will be ignored:
+    1. aspect is too small
+    2. the same resoultion
+    3. smaller width with the same aspect
+    This function will be called by the cycle method in the
+    checkbox_support.dbus.gnome_monitor
+
+    :param modes:  The list of Mode that defined
+                   in checkbox_support.dbus.gnome_monitor
+    """
+    new_modes = []
+    tmp_resolution = []
+    sort_modes = sorted(
+        modes, key=lambda m: int(m.resolution.split("x")[0]), reverse=True
+    )
+    top_res_per_aspect = {}
+    for m in sort_modes:
+        width, height = [int(x) for x in m.resolution.split("x")]
+        aspect = Fraction(width, height)
+        # Igonre the too small one
+        if width < 675 or width / aspect < 530:
+            continue
+        # Igonre the same one
+        if m.resolution in tmp_resolution:
+            continue
+        # Only take the widthest one with the same aspect
+        if aspect not in top_res_per_aspect:
+            top_res_per_aspect[aspect] = (m, width)
+            new_modes.append(m)
+        else:
+            pre_m, pre_width = top_res_per_aspect[aspect]
+            if pre_width < width:
+                top_res_per_aspect[aspect] = width
+                new_modes.append(m)
+                new_modes.remove(pre_m)
+        tmp_resolution.append(m.resolution)
+
+    return new_modes
+
+
+def action(filename, **kwargs):
+    """
+    For extra steps for each cycle.
+    The extra steps is typing and moving mouse randomly
+    then take a screenshot.
+    This function will be called by the cycle method in the
+    checkbox_support.dbus.gnome_monitor
+
+    :param filename: The string is constructed by
+                     [monitor name]_[resolution]_[transform]_.
+    """
+    print("Test: {}".format(filename))
+    if "path" in kwargs:
+        path_and_filename = "{}/{}.jpg".format(kwargs.get("path"), filename)
+    else:
+        path_and_filename = "{}.jpg".format(filename)
+    time.sleep(5)
+    # subprocess.check_output(["sudo", "keyboard_mouse"])
+    subprocess.check_output(["gnome-screenshot", "-f", path_and_filename])
+
+
+class MonitorTest:
+    def gen_screenshot_path(self, keyword: str, screenshot_dir: str) -> str:
+        """
+        Generate the screenshot path and create the folder.
+        If the keyword is not defined, it will check the suspend_stats to
+        decide the keyowrd should be after_suspend or not
+
+        :param keyword: the postfix for the path
+
+        :param screenshot_dir: the dictionary for screenshot
+        """
+        path = os.path.join(screenshot_dir, "xrandr_screens")
+        if keyword and keyword != "":
+            path = path + "_" + keyword
+        else:
+            # check the status is before or after suspend
+            with open("/sys/power/suspend_stats/success", "r") as s:
+                suspend_count = s.readline().strip("\n")
+                if suspend_count != "0":
+                    path = "{}_after_suspend".format(path)
+        os.makedirs(path, exist_ok=True)
+
+        return path
+
+    def tar_screenshot_dir(self, path: str):
+        """
+        Tar up the screenshots for uploading.
+
+        :param path: the dictionary for screenshot
+        """
+        try:
+            with tarfile.open(path + ".tgz", "w:gz") as screen_tar:
+                for screen in os.listdir(path):
+                    screen_tar.add(path + "/" + screen, screen)
+        except (IOError, OSError):
+            pass
+
+    def parse_args(self, args=sys.argv[1:]):
+        """
+        command line arguments parsing
+
+        :param args: arguments from sys
+        :type args: sys.argv
+        """
+        parser = argparse.ArgumentParser(
+            prog="monitor tester",
+            description="Test monitor that could rotate and change resoultion",
+        )
+
+        parser.add_argument(
+            "-c",
+            "--cycle",
+            type=str,
+            default="both",
+            help="cycling resolution, transform or both(default: %(default)s)",
+        )
+        parser.add_argument(
+            "--keyword",
+            default="",
+            help=(
+                "A keyword to distinguish the screenshots "
+                "taken in this run of the script(default: %(default)s)"
+            ),
+        )
+        parser.add_argument(
+            "--screenshot_dir",
+            default=os.environ["HOME"],
+            help=(
+                "Specify a directory to store screenshots in. "
+                "(default: %(default)s)"
+            ),
+        )
+
+        return parser.parse_args(args)
+
+    def main(self):
+        args = self.parse_args()
+
+        try:
+            monitor_config = display_info.get_monitor_config()
+        except ValueError as e:
+            raise SystemExit("Current host is not support: {}".format(e))
+
+        screenshot_path = self.gen_screenshot_path(
+            args.keyword, args.screenshot_dir
+        )
+        if args.cycle == "resolution":
+            monitor_config.cycle(
+                resolution=True,
+                resolution_filter=resolution_filter,
+                transform=False,
+                action=action,
+                path=screenshot_path,
+            )
+        elif args.cycle == "transform":
+            monitor_config.cycle(
+                resolution=False,
+                resolution_filter=resolution_filter,
+                transform=True,
+                action=action,
+                path=screenshot_path,
+            )
+        else:
+            monitor_config.cycle(
+                resolution=True,
+                resolution_filter=resolution_filter,
+                transform=True,
+                action=action,
+                path=screenshot_path,
+            )
+        self.tar_screenshot_dir(screenshot_path)
+
+
+if __name__ == "__main__":
+    MonitorTest().main()