On Tuesday, September 8, 2020 8:28:20 AM MST Ben Cotton wrote: > https://fedoraproject.org/wiki/Changes/WaylandByDefaultForPlasma > > == Summary == > Change the default session selection in SDDM to prefer the > Wayland-based KDE Plasma Desktop session over the X11-based one. > > == Owner == > * Name: [[User:Ngompa|Neal Gompa]], [[User:Rdieter|Rex Dieter]], > [[User:Jgrulich|Jan Grulich]] > * Email: ngompa13@xxxxxxxxx, rdieter@xxxxxxxxx, jgrulich@xxxxxxxxxx > * Product: KDE Spin > * Responsible WG: KDE SIG > > > == Detailed Description == > > With KDE Plasma 5.20, the KDE Plasma desktop environment has reached a > point where nearly all commonly used features in the desktop and all > major applications function in the Plasma Wayland environment on all > major GPUs (including NVIDIA with the proprietary driver). Starting > with Plasma 5.20 in Fedora 34, we will change the default > configuration for Wayland and X11 Plasma sessions so that Wayland is > preferred and used by default, while permitting the X11 session to be > selected as the alternative desktop environment option. > > == Feedback == > > ==== Is Wayland ready? ==== > Wayland has been used by default for Fedora Workstation (which uses > GNOME) since Fedora 25. And while it was somewhat immature initially, > today it is a very rock-solid experience on virtually everything > Fedora Workstation runs on. The change in Fedora 25 kickstarted the > drive to get everything working on Wayland, and the Workstation team > succeeded beyond their wildest dreams. Firefox has been Wayland-native > by default since Fedora 31 as well. > > On the KDE side, serious work into supporting Wayland started shortly > after GNOME switched to Wayland by default. Unlike GNOME, KDE has a > much broader stack in its toolkit, and it has taken longer to get to a > usable state. With the Plasma 5.20 release, the Wayland protocol for > screencasting as well as middle-click paste finally are supported, > completing the required feature set for switching to Wayland by > default. > > ==== What about NVIDIA? ==== > Plasma, in fact, ''does'' support NVIDIA GPUs with the proprietary > driver on Wayland. It needs to be manually activated, which will be > taken care of by the <code>kwin-wayland-nvidia</code> package. So the > expectation is that all major GPUs will work just fine. > > ==== Why not keep using X11? ==== > The fact of the matter is, Xorg is in > [https://blogs.gnome.org/uraeus/2019/06/24/on-the-road-to-fedora-workstation > -31/ "hard maintenance mode"] per [[User:Uraeus|Christian Schaller]] and > development on it has basically stopped beyond the most critical of fixes. > Combined with the rapid maturation of the Wayland session in KDE Plasma, > this is the best time to make the switch and push things over the edge for > the KDE ecosystem in the same way that Fedora > Workstation did for the GNOME ecosystem. > > == Benefit to Fedora == > Fedora has long been a leader in advancing the adoption of the Wayland > protocol as part of the overall strategy to improve the Linux > graphical software stack. Much of the quality of Wayland for GNOME can > be attributed to the work done by the Fedora Workstation WG as part of > advancing the GNOME platform. It is now the KDE SIG's turn to do the > same for the KDE platform. By making this change, we are helping push > the adoption forward for newer, more streamlined, and overall more > actively developed graphics technology for the KDE ecosystem. > > == Scope == > * Proposal owners: > ** Modify {{package|kwin}} to switch to Wayland > *** Split out <code>/usr/bin/kwin_x11</code> to the > <code>kwin-x11</code> subpackage. > *** Make {{package|kwin}} require <code>kwin-wayland</code> and > recommend <code>kwin-x11</code> > *** Add <code>kwin-wayland-nvidia</code> subpackage which contains > <code>/usr/lib/environment.d/10-kwin-wayland-nvidia.conf</code> to set > <code>$KWIN_DRM_USE_EGL_STREAMS</code> to <code>1</code>. This package > will have have a Supplements dependency <code>(kwin-wayland and > kmod-nvidia)</code>. > ** Modify {{package|plasma-workspace}} to switch to Wayland > *** Rename <code>/usr/share/xsessions/plasma.desktop</code> to > <code>/usr/share/xsessions/plasma-xorg.desktop</code>, subpackage it > out as <code>plasma-workspace-xorg</code>, and have it require > <code>kwin-x11</code> > *** Rename <code>/usr/share/wayland-sessions/plasmawayland.desktop</code> > to <code>/usr/share/wayland-sessions/plasma.desktop</code> > *** Make {{package|plasma-workspace}} require > <code>plasma-workspace-wayland</code> and recommend > <code>plasma-workspace-xorg</code> > ** Modify <code>@kde-desktop</code> comps group for Fedora 34 to > include <code>plasma-workspace-xorg</code> for the media. > > * Other developers: N/A (not applicable for this Change) > * Release engineering: [https://pagure.io/releng/issue/9741 #9741] > * Policies and guidelines: N/A (not needed for this Change) > * Trademark approval: N/A (not needed for this Change) > * Alignment with Objectives: N/A (not applicable for this Change) > > == Upgrade/compatibility impact == > Systems using certain (very old) graphics hardware or graphics drivers > (matrox, etc.) may have problems running the Wayland session. In these > (rare) cases, users may have to configure SDDM to use X11. > > == How To Test == > Log into a KDE Plasma desktop. Do any activity you would normally do > in your daily desktop use: launching applications, configuring > displays, etc. Things should work the same way under Wayland as they > used to under X. > > == User Experience == > The user experience should not change noticeably. > > == Dependencies == > This mainly affects the {{package|plasma-workspace}} and > {{package|kwin}} packages, and details for the changes for those > packages are described in the Scope section. > > == Contingency Plan == > * Contingency mechanism: Revert the file renames and switch > <code>plasma-workspace-xorg</code> to be the required package instead > of <code>plasma-workspace-wayland</code> > * Contingency deadline: beta freeze > * Blocks release? Yes > * Blocks product? KDE Spin > > == Documentation == > Some upstream documents about Wayland > * https://community.kde.org/Plasma/Wayland > * https://community.kde.org/KWin/Wayland > > There is currently no coherent up to date documentation about Plasma > Wayland. > == Release Notes == > The KDE Plasma Desktop is using the Wayland display system now. X > applications will continue to run transparently through XWayland. > > > -- > Ben Cotton > He / Him / His > Senior Program Manager, Fedora & CentOS Stream > Red Hat > TZ=America/Indiana/Indianapolis As long as this can be fixed back to X11 on the systems where Wayland doesn't work (most), and the plasma-workspace-xorg package remains, I can't see any issue with this change. I'm sure it'd be great for people just getting into KDE, or people with newer hardware. -- John M. Harris, Jr. _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
