On 5/10/21 10:56 AM, Temlakos wrote: > Everyone: > > Ever since the latest massive kde5 update (Saturday 8 May 2021), I > have not been able to use the task bar to switch between open windows > - and sometimes not even to start certain applications that have > taskbar icons. Anything in the System Tray is all right - like the > dnfdragora update icon, the clipboard, the new-device icon, or the > volume icon. But anything for an open window? Forget it. Every time I > click on such an object, the computer pauses for about ten or fifteen > seconds, during which it accepts no input from mouse or keyboard - > and then blanks the screen, abruptly closes all open windows, and > restarts the session. Most of the time the session is all right, but > not always - in which case I restart the machine. > > It's not the kernel. I've tried this with all three versions of the > kernel I now have on board. (They're all three F34 builds by now.) > > It's one or more of the applications that are part of KDE Plasma. But > I despair of telling which one. That update had 185 programs in it, > and only four of them are referable to the kernel. > > I can always use the Alt-Tab trick to browse open windows to get to > any open window I want. I can always start most programs through the > Applications Menu; that icon works. I /think/ I can start one > instance of Dolphin - but starting a new instance requires the task > bar, so that's out. The only way to open two instances of Dolphin is > to connect an external device, thus giving me an excuse to open that > device in Dolphin and then switch views. (And another thing: movement > and copying from one Dolphin instance to another is also broken. I > have to use the clipboard as an intermediate step. Otherwise Dolphin > complains that it /can't read/ what I'm trying to move or copy.) > > In other news, my bug reporting system is broken and won't report > anything, and the KDE Daemon keeps crashing at the beginning of every > session - though I can't tell whether I'm losing anything by that. > > Has anyone else noticed this issue? > > Can someone having an intact reporting system, or an upstream > channel, try to report this? > I wonder if the update didn't fully complete? Does this show any plasma/kf5 related updates? yum list updates

On 5/10/21 11:32 AM, Temlakos wrote: > On 5/10/21 10:13 AM, Patrick Boutilier wrote: >> >> >> On 5/10/21 10:56 AM, Temlakos wrote: >>> Everyone: >>> >>> Ever since the latest massive kde5 update (Saturday 8 May 2021), I >>> have not been able to use the task bar to switch between open >>> windows - and sometimes not even to start certain applications that >>> have taskbar icons. Anything in the System Tray is all right - like >>> the dnfdragora update icon, the clipboard, the new-device icon, or >>> the volume icon. But anything for an open window? Forget it. Every >>> time I click on such an object, the computer pauses for about ten >>> or fifteen seconds, during which it accepts no input from mouse or >>> keyboard - and then blanks the screen, abruptly closes all open >>> windows, and restarts the session. Most of the time the session is >>> all right, but not always - in which case I restart the machine. >>> >>> It's not the kernel. I've tried this with all three versions of the >>> kernel I now have on board. (They're all three F34 builds by now.) >>> >>> It's one or more of the applications that are part of KDE Plasma. >>> But I despair of telling which one. That update had 185 programs in >>> it, and only four of them are referable to the kernel. >>> >>> I can always use the Alt-Tab trick to browse open windows to get to >>> any open window I want. I can always start most programs through >>> the Applications Menu; that icon works. I /think/ I can start one >>> instance of Dolphin - but starting a new instance requires the task >>> bar, so that's out. The only way to open two instances of Dolphin >>> is to connect an external device, thus giving me an excuse to open >>> that device in Dolphin and then switch views. (And another thing: >>> movement and copying from one Dolphin instance to another is also >>> broken. I have to use the clipboard as an intermediate step. >>> Otherwise Dolphin complains that it /can't read/ what I'm trying to >>> move or copy.) >>> >>> In other news, my bug reporting system is broken and won't report >>> anything, and the KDE Daemon keeps crashing at the beginning of >>> every session - though I can't tell whether I'm losing anything by >>> that. >>> >>> Has anyone else noticed this issue? >>> >>> Can someone having an intact reporting system, or an upstream >>> channel, try to report this? >>> >> >> I wonder if the update didn't fully complete? Does this show any >> plasma/kf5 related updates? >> >> yum list updates > > > No. No updates available at this time, from any repository. Whatever > packages I got, the update went through. Ergo, I didn't get every > package that needed to change, or the latest Plasma/KF5 update > contains a bug or bugs related to the Task Bar. > Are yum running plasma under Wayland or X11 ?

On 5/10/21 1:04 PM, Temlakos wrote: > On 5/10/21 10:58 AM, Patrick Boutilier wrote: >> >> >> On 5/10/21 11:32 AM, Temlakos wrote: >>> On 5/10/21 10:13 AM, Patrick Boutilier wrote: >>>> >>>> >>>> On 5/10/21 10:56 AM, Temlakos wrote: >>>>> Everyone: >>>>> >>>>> Ever since the latest massive kde5 update (Saturday 8 May 2021), >>>>> I have not been able to use the task bar to switch between open >>>>> windows - and sometimes not even to start certain applications >>>>> that have taskbar icons. Anything in the System Tray is all right >>>>> - like the dnfdragora update icon, the clipboard, the new-device >>>>> icon, or the volume icon. But anything for an open window? Forget >>>>> it. Every time I click on such an object, the computer pauses for >>>>> about ten or fifteen seconds, during which it accepts no input >>>>> from mouse or keyboard - and then blanks the screen, abruptly >>>>> closes all open windows, and restarts the session. Most of the >>>>> time the session is all right, but not always - in which case I >>>>> restart the machine. >>>>> >>>>> It's not the kernel. I've tried this with all three versions of >>>>> the kernel I now have on board. (They're all three F34 builds by >>>>> now.) >>>>> >>>>> It's one or more of the applications that are part of KDE Plasma. >>>>> But I despair of telling which one. That update had 185 programs >>>>> in it, and only four of them are referable to the kernel. >>>>> >>>>> I can always use the Alt-Tab trick to browse open windows to get >>>>> to any open window I want. I can always start most programs >>>>> through the Applications Menu; that icon works. I /think/ I can >>>>> start one instance of Dolphin - but starting a new instance >>>>> requires the task bar, so that's out. The only way to open two >>>>> instances of Dolphin is to connect an external device, thus >>>>> giving me an excuse to open that device in Dolphin and then >>>>> switch views. (And another thing: movement and copying from one >>>>> Dolphin instance to another is also broken. I have to use the >>>>> clipboard as an intermediate step. Otherwise Dolphin complains >>>>> that it /can't read/ what I'm trying to move or copy.) >>>>> >>>>> In other news, my bug reporting system is broken and won't report >>>>> anything, and the KDE Daemon keeps crashing at the beginning of >>>>> every session - though I can't tell whether I'm losing anything >>>>> by that. >>>>> >>>>> Has anyone else noticed this issue? >>>>> >>>>> Can someone having an intact reporting system, or an upstream >>>>> channel, try to report this? >>>>> >>>> >>>> I wonder if the update didn't fully complete? Does this show any >>>> plasma/kf5 related updates? >>>> >>>> yum list updates >>> >>> >>> No. No updates available at this time, from any repository. >>> Whatever packages I got, the update went through. Ergo, I didn't >>> get every package that needed to change, or the latest Plasma/KF5 >>> update contains a bug or bugs related to the Task Bar. >>> >> >> Are yum running plasma under Wayland or X11 ? > > As far as I know, I'm using X11. I don't remember explicitly > transferring to Wayland. I have been upgrading by the command line > for every iteration since F21 at least, and so I should always have > kept the same interface, which should be X11. I wouldn't know how to > transfer to Wayland; I'm not even sure whether that is a valid > interface for desktop hardware. Default in Fedora 34 is wayland. Do this in Konsole and see if there is any kwin/plasma stuff that comes back: ps ax|grep wayland

On 5/10/21 1:15 PM, Temlakos wrote: > On 5/10/21 12:12 PM, Patrick Boutilier wrote: >> >> >> On 5/10/21 1:04 PM, Temlakos wrote: >>> On 5/10/21 10:58 AM, Patrick Boutilier wrote: >>>> >>>> >>>> On 5/10/21 11:32 AM, Temlakos wrote: >>>>> On 5/10/21 10:13 AM, Patrick Boutilier wrote: >>>>>> >>>>>> >>>>>> On 5/10/21 10:56 AM, Temlakos wrote: >>>>>>> Everyone: >>>>>>> >>>>>>> Ever since the latest massive kde5 update (Saturday 8 May >>>>>>> 2021), I have not been able to use the task bar to switch >>>>>>> between open windows - and sometimes not even to start certain >>>>>>> applications that have taskbar icons. Anything in the System >>>>>>> Tray is all right - like the dnfdragora update icon, the >>>>>>> clipboard, the new-device icon, or the volume icon. But >>>>>>> anything for an open window? Forget it. Every time I click on >>>>>>> such an object, the computer pauses for about ten or fifteen >>>>>>> seconds, during which it accepts no input from mouse or >>>>>>> keyboard - and then blanks the screen, abruptly closes all open >>>>>>> windows, and restarts the session. Most of the time the session >>>>>>> is all right, but not always - in which case I restart the >>>>>>> machine. >>>>>>> >>>>>>> It's not the kernel. I've tried this with all three versions of >>>>>>> the kernel I now have on board. (They're all three F34 builds >>>>>>> by now.) >>>>>>> >>>>>>> It's one or more of the applications that are part of KDE >>>>>>> Plasma. But I despair of telling which one. That update had 185 >>>>>>> programs in it, and only four of them are referable to the kernel. >>>>>>> >>>>>>> I can always use the Alt-Tab trick to browse open windows to >>>>>>> get to any open window I want. I can always start most programs >>>>>>> through the Applications Menu; that icon works. I /think/ I can >>>>>>> start one instance of Dolphin - but starting a new instance >>>>>>> requires the task bar, so that's out. The only way to open two >>>>>>> instances of Dolphin is to connect an external device, thus >>>>>>> giving me an excuse to open that device in Dolphin and then >>>>>>> switch views. (And another thing: movement and copying from one >>>>>>> Dolphin instance to another is also broken. I have to use the >>>>>>> clipboard as an intermediate step. Otherwise Dolphin complains >>>>>>> that it /can't read/ what I'm trying to move or copy.) >>>>>>> >>>>>>> In other news, my bug reporting system is broken and won't >>>>>>> report anything, and the KDE Daemon keeps crashing at the >>>>>>> beginning of every session - though I can't tell whether I'm >>>>>>> losing anything by that. >>>>>>> >>>>>>> Has anyone else noticed this issue? >>>>>>> >>>>>>> Can someone having an intact reporting system, or an upstream >>>>>>> channel, try to report this? >>>>>>> >>>>>> >>>>>> I wonder if the update didn't fully complete? Does this show any >>>>>> plasma/kf5 related updates? >>>>>> >>>>>> yum list updates >>>>> >>>>> >>>>> No. No updates available at this time, from any repository. >>>>> Whatever packages I got, the update went through. Ergo, I didn't >>>>> get every package that needed to change, or the latest Plasma/KF5 >>>>> update contains a bug or bugs related to the Task Bar. >>>>> >>>> >>>> Are yum running plasma under Wayland or X11 ? >>> >>> As far as I know, I'm using X11. I don't remember explicitly >>> transferring to Wayland. I have been upgrading by the command line >>> for every iteration since F21 at least, and so I should always have >>> kept the same interface, which should be X11. I wouldn't know how >>> to transfer to Wayland; I'm not even sure whether that is a valid >>> interface for desktop hardware. >> >> >> Default in Fedora 34 is wayland. Do this in Konsole and see if there >> is any kwin/plasma stuff that comes back: >> >> ps ax|grep wayland >> > > Done, and here is the output: > > ps ax|grep wayland >     2044 ?        S      0:00 /usr/libexec/sddm-helper --socket > /tmp/sddm-auth6a45d97b-56fa-4345-8221-8fe52b898a6a --id 1 --start > /usr/libexec/plasma-dbus-run-session-if-needed > /usr/bin/startplasma-wayland --user Temlakos >     2069 tty1     Ssl+   0:00 /usr/bin/startplasma-wayland >     2117 tty1     S+     0:00 /usr/bin/kwin_wayland_wrapper > --xwayland /usr/libexec/startplasma-waylandsession >    22033 tty1     Sl+    4:06 kwin_wayland --wayland_fd 4 --xwayland > /usr/libexec/startplasma-waylandsession >    22107 tty1     Sl+    3:04 /usr/bin/Xwayland -displayfd 33 > -rootless -wm 36 -auth /run/user/1000/xauth_ITtMLk >    22151 ?        Sl     0:00 /usr/libexec/startplasma-waylandsession >    40868 pts/1    S+     0:00 grep --color=auto wayland > > The word "wayland" appears in red; the rest of the above text appears > in white. > > Does that confirm your suspicion? Yes. Try selecting an X11 plasma session from the SDDM login screen.

On 5/11/21 11:07 AM, Temlakos wrote: > On 5/11/21 9:52 AM, Patrick Boutilier wrote: >> >> >> On 5/10/21 1:15 PM, Temlakos wrote: >>> On 5/10/21 12:12 PM, Patrick Boutilier wrote: >>>> >>>> >>>> On 5/10/21 1:04 PM, Temlakos wrote: >>>>> On 5/10/21 10:58 AM, Patrick Boutilier wrote: >>>>>> >>>>>> >>>>>> On 5/10/21 11:32 AM, Temlakos wrote: >>>>>>> On 5/10/21 10:13 AM, Patrick Boutilier wrote: >>>>>>>> >>>>>>>> >>>>>>>> On 5/10/21 10:56 AM, Temlakos wrote: >>>>>>>>> Everyone: >>>>>>>>> >>>>>>>>> Ever since the latest massive kde5 update (Saturday 8 May >>>>>>>>> 2021), I have not been able to use the task bar to switch >>>>>>>>> between open windows - and sometimes not even to start >>>>>>>>> certain applications that have taskbar icons. Anything in the >>>>>>>>> System Tray is all right - like the dnfdragora update icon, >>>>>>>>> the clipboard, the new-device icon, or the volume icon. But >>>>>>>>> anything for an open window? Forget it. Every time I click on >>>>>>>>> such an object, the computer pauses for about ten or fifteen >>>>>>>>> seconds, during which it accepts no input from mouse or >>>>>>>>> keyboard - and then blanks the screen, abruptly closes all >>>>>>>>> open windows, and restarts the session. Most of the time the >>>>>>>>> session is all right, but not always - in which case I >>>>>>>>> restart the machine. >>>>>>>>> >>>>>>>>> It's not the kernel. I've tried this with all three versions >>>>>>>>> of the kernel I now have on board. (They're all three F34 >>>>>>>>> builds by now.) >>>>>>>>> >>>>>>>>> It's one or more of the applications that are part of KDE >>>>>>>>> Plasma. But I despair of telling which one. That update had >>>>>>>>> 185 programs in it, and only four of them are referable to >>>>>>>>> the kernel. >>>>>>>>> >>>>>>>>> I can always use the Alt-Tab trick to browse open windows to >>>>>>>>> get to any open window I want. I can always start most >>>>>>>>> programs through the Applications Menu; that icon works. I >>>>>>>>> /think/ I can start one instance of Dolphin - but starting a >>>>>>>>> new instance requires the task bar, so that's out. The only >>>>>>>>> way to open two instances of Dolphin is to connect an >>>>>>>>> external device, thus giving me an excuse to open that device >>>>>>>>> in Dolphin and then switch views. (And another thing: >>>>>>>>> movement and copying from one Dolphin instance to another is >>>>>>>>> also broken. I have to use the clipboard as an intermediate >>>>>>>>> step. Otherwise Dolphin complains that it /can't read/ what >>>>>>>>> I'm trying to move or copy.) >>>>>>>>> >>>>>>>>> In other news, my bug reporting system is broken and won't >>>>>>>>> report anything, and the KDE Daemon keeps crashing at the >>>>>>>>> beginning of every session - though I can't tell whether I'm >>>>>>>>> losing anything by that. >>>>>>>>> >>>>>>>>> Has anyone else noticed this issue? >>>>>>>>> >>>>>>>>> Can someone having an intact reporting system, or an upstream >>>>>>>>> channel, try to report this? >>>>>>>>> >>>>>>>> >>>>>>>> I wonder if the update didn't fully complete? Does this show >>>>>>>> any plasma/kf5 related updates? >>>>>>>> >>>>>>>> yum list updates >>>>>>> >>>>>>> >>>>>>> No. No updates available at this time, from any repository. >>>>>>> Whatever packages I got, the update went through. Ergo, I >>>>>>> didn't get every package that needed to change, or the latest >>>>>>> Plasma/KF5 update contains a bug or bugs related to the Task Bar. >>>>>>> >>>>>> >>>>>> Are yum running plasma under Wayland or X11 ? >>>>> >>>>> As far as I know, I'm using X11. I don't remember explicitly >>>>> transferring to Wayland. I have been upgrading by the command >>>>> line for every iteration since F21 at least, and so I should >>>>> always have kept the same interface, which should be X11. I >>>>> wouldn't know how to transfer to Wayland; I'm not even sure >>>>> whether that is a valid interface for desktop hardware. >>>> >>>> >>>> Default in Fedora 34 is wayland. Do this in Konsole and see if >>>> there is any kwin/plasma stuff that comes back: >>>> >>>> ps ax|grep wayland >>>> >>> >>> Done, and here is the output: >>> >>> ps ax|grep wayland >>>     2044 ?        S      0:00 /usr/libexec/sddm-helper --socket >>> /tmp/sddm-auth6a45d97b-56fa-4345-8221-8fe52b898a6a --id 1 --start >>> /usr/libexec/plasma-dbus-run-session-if-needed >>> /usr/bin/startplasma-wayland --user Temlakos >>>     2069 tty1     Ssl+   0:00 /usr/bin/startplasma-wayland >>>     2117 tty1     S+     0:00 /usr/bin/kwin_wayland_wrapper >>> --xwayland /usr/libexec/startplasma-waylandsession >>>    22033 tty1     Sl+    4:06 kwin_wayland --wayland_fd 4 >>> --xwayland /usr/libexec/startplasma-waylandsession >>>    22107 tty1     Sl+    3:04 /usr/bin/Xwayland -displayfd 33 >>> -rootless -wm 36 -auth /run/user/1000/xauth_ITtMLk >>>    22151 ?        Sl     0:00 /usr/libexec/startplasma-waylandsession >>>    40868 pts/1    S+     0:00 grep --color=auto wayland >>> >>> The word "wayland" appears in red; the rest of the above text >>> appears in white. >>> >>> Does that confirm your suspicion? >> >> >> Yes. Try selecting an X11 plasma session from the SDDM login screen. > > And how do I get to that point? My login screen asks me only one > thing: who am I, among three registered users of this computer? It > does not ask me for a preference of X11 v. Weyland. Should be in the bottom left as a pulldown. I don't find it very prominent.

On 5/11/21 10:10 AM, Patrick Boutilier wrote: > > > On 5/11/21 11:07 AM, Temlakos wrote: >> On 5/11/21 9:52 AM, Patrick Boutilier wrote: >>> >>> >>> On 5/10/21 1:15 PM, Temlakos wrote: >>>> On 5/10/21 12:12 PM, Patrick Boutilier wrote: >>>>> >>>>> >>>>> On 5/10/21 1:04 PM, Temlakos wrote: >>>>>> On 5/10/21 10:58 AM, Patrick Boutilier wrote: >>>>>>> >>>>>>> >>>>>>> On 5/10/21 11:32 AM, Temlakos wrote: >>>>>>>> On 5/10/21 10:13 AM, Patrick Boutilier wrote: >>>>>>>>> >>>>>>>>> >>>>>>>>> On 5/10/21 10:56 AM, Temlakos wrote: >>>>>>>>>> Everyone: >>>>>>>>>> >>>>>>>>>> Ever since the latest massive kde5 update (Saturday 8 May >>>>>>>>>> 2021), I have not been able to use the task bar to switch >>>>>>>>>> between open windows - and sometimes not even to start >>>>>>>>>> certain applications that have taskbar icons. Anything in the >>>>>>>>>> System Tray is all right - like the dnfdragora update icon, >>>>>>>>>> the clipboard, the new-device icon, or the volume icon. But >>>>>>>>>> anything for an open window? Forget it. Every time I click on >>>>>>>>>> such an object, the computer pauses for about ten or fifteen >>>>>>>>>> seconds, during which it accepts no input from mouse or >>>>>>>>>> keyboard - and then blanks the screen, abruptly closes all >>>>>>>>>> open windows, and restarts the session. Most of the time the >>>>>>>>>> session is all right, but not always - in which case I >>>>>>>>>> restart the machine. >>>>>>>>>> >>>>>>>>>> It's not the kernel. I've tried this with all three versions >>>>>>>>>> of the kernel I now have on board. (They're all three F34 >>>>>>>>>> builds by now.) >>>>>>>>>> >>>>>>>>>> It's one or more of the applications that are part of KDE >>>>>>>>>> Plasma. But I despair of telling which one. That update had >>>>>>>>>> 185 programs in it, and only four of them are referable to >>>>>>>>>> the kernel. >>>>>>>>>> >>>>>>>>>> I can always use the Alt-Tab trick to browse open windows to >>>>>>>>>> get to any open window I want. I can always start most >>>>>>>>>> programs through the Applications Menu; that icon works. I >>>>>>>>>> /think/ I can start one instance of Dolphin - but starting a >>>>>>>>>> new instance requires the task bar, so that's out. The only >>>>>>>>>> way to open two instances of Dolphin is to connect an >>>>>>>>>> external device, thus giving me an excuse to open that device >>>>>>>>>> in Dolphin and then switch views. (And another thing: >>>>>>>>>> movement and copying from one Dolphin instance to another is >>>>>>>>>> also broken. I have to use the clipboard as an intermediate >>>>>>>>>> step. Otherwise Dolphin complains that it /can't read/ what >>>>>>>>>> I'm trying to move or copy.) >>>>>>>>>> >>>>>>>>>> In other news, my bug reporting system is broken and won't >>>>>>>>>> report anything, and the KDE Daemon keeps crashing at the >>>>>>>>>> beginning of every session - though I can't tell whether I'm >>>>>>>>>> losing anything by that. >>>>>>>>>> >>>>>>>>>> Has anyone else noticed this issue? >>>>>>>>>> >>>>>>>>>> Can someone having an intact reporting system, or an upstream >>>>>>>>>> channel, try to report this? >>>>>>>>>> >>>>>>>>> >>>>>>>>> I wonder if the update didn't fully complete? Does this show >>>>>>>>> any plasma/kf5 related updates? >>>>>>>>> >>>>>>>>> yum list updates >>>>>>>> >>>>>>>> >>>>>>>> No. No updates available at this time, from any repository. >>>>>>>> Whatever packages I got, the update went through. Ergo, I >>>>>>>> didn't get every package that needed to change, or the latest >>>>>>>> Plasma/KF5 update contains a bug or bugs related to the Task Bar. >>>>>>>> >>>>>>> >>>>>>> Are yum running plasma under Wayland or X11 ? >>>>>> >>>>>> As far as I know, I'm using X11. I don't remember explicitly >>>>>> transferring to Wayland. I have been upgrading by the command >>>>>> line for every iteration since F21 at least, and so I should >>>>>> always have kept the same interface, which should be X11. I >>>>>> wouldn't know how to transfer to Wayland; I'm not even sure >>>>>> whether that is a valid interface for desktop hardware. >>>>> >>>>> >>>>> Default in Fedora 34 is wayland. Do this in Konsole and see if >>>>> there is any kwin/plasma stuff that comes back: >>>>> >>>>> ps ax|grep wayland >>>>> >>>> >>>> Done, and here is the output: >>>> >>>> ps ax|grep wayland >>>> 2044 ? S 0:00 /usr/libexec/sddm-helper --socket >>>> /tmp/sddm-auth6a45d97b-56fa-4345-8221-8fe52b898a6a --id 1 --start >>>> /usr/libexec/plasma-dbus-run-session-if-needed >>>> /usr/bin/startplasma-wayland --user Temlakos >>>> 2069 tty1 Ssl+ 0:00 /usr/bin/startplasma-wayland >>>> 2117 tty1 S+ 0:00 /usr/bin/kwin_wayland_wrapper >>>> --xwayland /usr/libexec/startplasma-waylandsession >>>> 22033 tty1 Sl+ 4:06 kwin_wayland --wayland_fd 4 >>>> --xwayland /usr/libexec/startplasma-waylandsession >>>> 22107 tty1 Sl+ 3:04 /usr/bin/Xwayland -displayfd 33 >>>> -rootless -wm 36 -auth /run/user/1000/xauth_ITtMLk >>>> 22151 ? Sl 0:00 /usr/libexec/startplasma-waylandsession >>>> 40868 pts/1 S+ 0:00 grep --color=auto wayland >>>> >>>> The word "wayland" appears in red; the rest of the above text >>>> appears in white. >>>> >>>> Does that confirm your suspicion? >>> >>> >>> Yes. Try selecting an X11 plasma session from the SDDM login screen. >> >> And how do I get to that point? My login screen asks me only one >> thing: who am I, among three registered users of this computer? It >> does not ask me for a preference of X11 v. Weyland. > > > Should be in the bottom left as a pulldown. I don't find it very > prominent. Problem solved. X11 restored certain behaviors to which I was accustomed. (Wayland, for instance, insists on opening all popups in the nearest corner instead of in the middle of the screen.) So I can attest: Wayland is not for everyone. Certain equipment requires X11.