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Anaconda uses xrandr to set the screen resolution when the boot option "inst.resolution" [1] is used. In order to be able to drop the X.Org server, use Mutter's API instead of xrandr. The kickstart equivalent option has been removed, so we don't need to care about it [2]. [1] https://anaconda-installer.readthedocs.io/en/latest/boot-options.html#inst-resolution [2] https://pykickstart.readthedocs.io/en/latest/kickstart-docs.html#xconfig
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| # | ||
| # Copyright (C) 2024 Red Hat, Inc. | ||
| # | ||
| # This copyrighted material is made available to anyone wishing to use, | ||
| # modify, copy, or redistribute it subject to the terms and conditions of | ||
| # the GNU General Public License v.2, or (at your option) any later version. | ||
| # This program is distributed in the hope that it will be useful, but WITHOUT | ||
| # ANY WARRANTY expressed or implied, including the implied warranties 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 this program; if not, write to the | ||
| # Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
| # 02110-1301, USA. Any Red Hat trademarks that are incorporated in the | ||
| # source code or documentation are not subject to the GNU General Public | ||
| # License and may only be used or replicated with the express permission of | ||
| # Red Hat, Inc. | ||
| # | ||
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| from dasbus.client.observer import DBusObserver | ||
| from pyanaconda.core.dbus import SessionBus | ||
| from pyanaconda.modules.common.constants.services import MUTTER_DISPLAY_CONFIG | ||
| from pyanaconda.core.regexes import SCREEN_RESOLUTION_CONFIG | ||
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| __all__ = ['MutterDisplay', 'MutterConfigError'] | ||
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| class MutterConfigError(Exception): | ||
| """Exception class for mutter configuration related problems""" | ||
| pass | ||
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| class MonitorId(object): | ||
| """Collection of properties that identify a unique monitor.""" | ||
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| def __init__(self, props): | ||
| self.connector = props[0] | ||
| self.vendor = props[1] | ||
| self.product = props[2] | ||
| self.serial = props[3] | ||
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| def __eq__(self, other): | ||
| return self.connector == other.connector and \ | ||
| self.vendor == other.vendor and \ | ||
| self.product == other.product and \ | ||
| self.serial == other.serial | ||
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| class MonitorMode(object): | ||
| """Available modes for a monitor.""" | ||
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| def __init__(self, props): | ||
| self.id = props[0] | ||
| self.width = props[1] | ||
| self.height = props[2] | ||
| self.refresh_rate = props[3] | ||
| self.preferred_scale = props[4] | ||
| self.supported_scales = props[5] | ||
| self.properties = props[6] | ||
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| class Monitor(object): | ||
| """Represent a connected physical monitor.""" | ||
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| def __init__(self, props): | ||
| self.id = MonitorId(props[0]) | ||
| self.modes = list(map(MonitorMode, props[1])) | ||
| self.properties = props[2] | ||
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| class LogicalMonitor(object): | ||
| """Represent the current logical monitor configuration""" | ||
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| def __init__(self, props): | ||
| self.x = props[0] | ||
| self.y = props[1] | ||
| self.scale = props[2] | ||
| self.transform = props[3] | ||
| self.primary = props[4] | ||
| self.monitor_ids = list(map(MonitorId, props[5])) | ||
| self.properties = props[6] | ||
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| class LogicalMonitorConfig(object): | ||
| """Logical monitor configuration object""" | ||
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| def __init__(self, logical_monitor, monitors, x, y, width, height): | ||
| """Creates a LogicalMonitorConfig setting the given resolution if available.""" | ||
| self._logical_monitor = logical_monitor | ||
| self._monitors = monitors | ||
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| self.x = x | ||
| self.y = y | ||
| self.scale = logical_monitor.scale | ||
| self.transform = logical_monitor.transform | ||
| self.primary = logical_monitor.primary | ||
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| self.monitors = list() | ||
| for monitor_id in logical_monitor.monitor_ids: | ||
| connector = monitor_id.connector | ||
| mode_id = self._get_matching_monitor_mode_id(monitors, monitor_id, width, height) | ||
| self.monitors.append((connector, mode_id, {})) | ||
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| def _get_matching_monitor_mode_id(self, monitors, monitor_id, width, height): | ||
| monitor = next(filter(lambda m: m.id == monitor_id, monitors)) | ||
| for mode in monitor.modes: | ||
| if mode.width == width and mode.height == height: | ||
| return mode.id | ||
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| raise MutterConfigError('Monitor mode with selected resolution not found') | ||
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| def to_dbus(self): | ||
| return ( | ||
| self.x, | ||
| self.y, | ||
| self.scale, | ||
| self.transform, | ||
| self.primary, | ||
| self.monitors, | ||
| ) | ||
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| class MutterDisplay(object): | ||
| """Class wrapping Mutter's display configuration API.""" | ||
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| def __init__(self): | ||
| self._proxy = MUTTER_DISPLAY_CONFIG.get_proxy() | ||
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| def on_service_ready(self, callback): | ||
| observer = DBusObserver(SessionBus, 'org.gnome.Kiosk') | ||
| observer.service_available.connect(callback) | ||
| observer.connect_once_available() | ||
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| def set_resolution(self, res_str): | ||
| """Changes the screen resolution. | ||
| :param res_str: Screen resolution configuration with format "800x600". | ||
| :raises MutterConfigError on failure. | ||
| """ | ||
| if not self._proxy.ApplyMonitorsConfigAllowed: | ||
| raise MutterConfigError('Monitor configuration is not allowed') | ||
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| (width, height) = self._parse_resolution_str(res_str) | ||
| (serial, monitor_props, logical_monitor_props, _) = self._proxy.GetCurrentState() | ||
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| # Configuration method as described in org.gnome.Mutter.DisplayConfig.xml: | ||
| # 0: verify | ||
| # 1: temporary | ||
| # 2: persistent | ||
| persistent_config = 2 | ||
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| monitors = list(map(Monitor, monitor_props)) | ||
| logical_monitors = list(map(LogicalMonitor, logical_monitor_props)) | ||
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| # Align the monitors in a row starting at X coordinate 0 | ||
| x = 0 | ||
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| configs = list() | ||
| for logical_monitor in logical_monitors: | ||
| config = LogicalMonitorConfig(logical_monitor, monitors, x, 0, width, height) | ||
| x += width | ||
| configs.append(config.to_dbus()) | ||
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| self._proxy.ApplyMonitorsConfig(serial, persistent_config, configs, {}) | ||
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| def _parse_resolution_str(self, res_str): | ||
| if not SCREEN_RESOLUTION_CONFIG.match(res_str): | ||
| raise MutterConfigError('Invalid configuration resolution') | ||
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| [width, height] = res_str.split('x') | ||
| return (int(width, 10), int(height, 10)) |