Hyprland creates inaccessible workspaces for mirroring monitors on boot

[Orzech05]

Hyprland version

Hyprland 0.56.0 built from branch v0.56.0 at commit 36b2e0c clean

Regression

Yes

Describe the bug

Hyprland is creating an inaccessible workspace for a monitor that's set to mirror a different monitor's display
Weirdly enough this only occurs on boot, as forcing the monitor config to be applied again after Hyprland launches fixes the issue (seems to be a config bug I guess?)

Reproduction steps

1. Set a monitor to mirror the display of another in the lua config
2. Reboot

System info and config

Monitor config:

hl.monitor({
    output   = "DP-3",
    mode     = "preferred",
    position = "0x0",
    scale    =  1,
    mirror   = "HDMI-A-1"
})

Workspaces after boot:

hyprctl workspaces
workspace ID 2 (2) on monitor DP-3:
	monitorID: 1
	windows: 0
	hasfullscreen: 0
	lastwindow: 0x0
	lastwindowtitle: 
	ispersistent: 0
	tiledLayout: dwindle

workspace ID 1 (1) on monitor HDMI-A-1:
	monitorID: 0
	windows: 3
	hasfullscreen: 0
	lastwindow: 0x562d39864e10
	lastwindowtitle: hyprctl workspaces
	ispersistent: 0
	tiledLayout: dwindle

Workspaces after running the config again:

hyprctl workspaces
workspace ID 1 (1) on monitor HDMI-A-1:
	monitorID: 0
	windows: 3
	hasfullscreen: 0
	lastwindow: 0x562d39864e10
	lastwindowtitle: hyprctl workspaces
	ispersistent: 0
	tiledLayout: dwindle

systeminfo.txt

[nelson202277]

I have the same issue. when I review the output of hyprctl monitors all I can see the minitor mirroring has active workspace: 2 (0) instead of active workspace:0 (0). I am curious how you forcing the monitor config to be applied again. I could only fix the issue by cancel mirroring and change it back.

[Orzech05]

I've fixed the issue by changing the value of the mirror field and thought that was basically the same as applying/reloading the config.
Turns out doing hyprctl reload which actually applies it doesn't work, sorry for the confusion

[nelson202277]

yeah... I tried hyprctl reload and it does not work for me. Therefore I ask how you do it.

[Claffystic]

I've tried toggling "Mirror" setting and hyprctl reload is a workaround for me too.

Remove "mirror = DP-x" > hypctl reload > add it again > hyprcyl reload again.

But hot plugging will make the hidden workspace appear and inaccessible again.

[vaxerski]

does it also happen when you hot-plug the monitor in?

[christianlegge]

Not for me; in fact, from a reboot where the problem is extant, disconnecting and hot-plugging the monitor fixes the problem in the same way that changing the config to disable and re-enable does.

[Orzech05]

For me it does. Disconnecting the monitor does remove the unnecessary workspace, but it gets added again once I reconnect the monitor

[gulafaran]

maybe? this also got changed in a recent monitor refactor.

otherwise applyMonitorRule moved away workspaces and m_activeWorkspace before this with setMirror(), but onConnect then reassigned one.

diff --git a/src/output/Monitor.cpp b/src/output/Monitor.cpp
index d20a09b2..941fa863 100644
--- a/src/output/Monitor.cpp
+++ b/src/output/Monitor.cpp
@@ -317,7 +317,8 @@ void CMonitor::onConnect(bool noRule) {
 
     Log::logger->log(Log::DEBUG, "Added new monitor with name {} at {:j0} with size {:j0}, pointer {:x}", m_name, m_position, m_pixelSize, rc<uintptr_t>(m_output.get()));
 
-    setupDefaultWS(monitorRule);
+    if (!isMirror())
+        setupDefaultWS(monitorRule);
 
     for (auto const& ws : State::workspaceState()->workspacesCopy()) {
         if (!valid(ws))

[tekstryder]

Fix for this by gulafaran was merged with commit 566ff8f.

• fix rotate and mirror regression #15587

@Orzech05 and others, please test and confirm this issue is resolved.

[Orzech05]

Yep, this fixed it for me

[tekstryder]

Great! Please mark your discussion as answered and close this thread.