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F43nd1r

Member

Registered: 2019-09-04

Posts: 34

KDE on wayland dies when switching with Displayport KVM switch

I'm trying to use KDE on Wayland (because x has other issues), however, every time I switch back my Displayport KVM switch, KDE is messed up. Panels are gone, wallpaper is sometimes gone, sometimes a mess of colored pixels.
If I switch back before KDE locks, I can get everything back to normal with

kquitapp5 plasmashell && kstart5 plasmashell

If it has been longer and KDE locked the screen my only chance I found is to switch to tty2 and reboot from there.

Here's a journal log where I switched to a different KVM port and 10 seconds later switched back:

Sep 19 21:32:27 Merry polkit-kde-authentication-agent-1[6478]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kdeconnectd[6659]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry xdg-desktop-portal-kde[6480]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry baloorunner[21583]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kactivitymanagerd[6476]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry python[6954]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry telegram-desktop[6743]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kernel: usb 3-2.3: USB disconnect, device number 24
Sep 19 21:32:27 Merry konsole[25858]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry org_kde_powerdevil[6479]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kcminit[288658]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kcminit[288660]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kded5[6421]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry dbus-daemon[858]: [session uid=1000 pid=858] Activating via systemd: service name='org.kde.kscreen.osdService' unit='plasma-kscreen-osd.service' requested by ':1.14' (uid=1000 pid=6421 comm="/usr/bin/kded5")
Sep 19 21:32:27 Merry kcminit[288674]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kcminit[288662]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kcminit[288678]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kcminit[288681]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kcminit[288695]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kcminit[288702]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry systemd[807]: Starting KScreen OSD service...
Sep 19 21:32:27 Merry kcminit[288660]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:27 Merry kcminit[288674]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:27 Merry kcminit[288662]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:27 Merry kcminit[288658]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:27 Merry kcminit[288695]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:27 Merry kcminit[288681]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:27 Merry kcminit[288678]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:27 Merry kcminit[288702]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:27 Merry dbus-daemon[858]: [session uid=1000 pid=858] Successfully activated service 'org.kde.kscreen.osdService'
Sep 19 21:32:27 Merry systemd[807]: Started KScreen OSD service.
Sep 19 21:32:27 Merry kscreen_osd_service[288697]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 19 21:32:27 Merry kded5[6421]: kscreen.kded: Config does not have at least one screen enabled, WILL NOT save this config, this is not what user wants.
Sep 19 21:32:28 Merry rtkit-daemon[1886]: Supervising 1 threads of 1 processes of 1 users.
Sep 19 21:32:28 Merry rtkit-daemon[1886]: Supervising 1 threads of 1 processes of 1 users.
Sep 19 21:32:37 Merry kernel: usb 3-2.3: new full-speed USB device number 25 using xhci_hcd
Sep 19 21:32:37 Merry kcminit[293096]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:37 Merry kcminit[293095]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:37 Merry kcminit[293110]: Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Sep 19 21:32:37 Merry kernel: usb 3-2.3: New USB device found, idVendor=04d9, idProduct=a1de, bcdDevice= 1.05
Sep 19 21:32:37 Merry kernel: usb 3-2.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Sep 19 21:32:37 Merry kernel: usb 3-2.3: Product: USB-HID Keyboard
Sep 19 21:32:37 Merry kernel: usb 3-2.3: Manufacturer: HOLTEK
Sep 19 21:32:37 Merry kernel: input: HOLTEK USB-HID Keyboard as /devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:04.0/0000:07:00.0/usb3/3-2/3-2.3/3-2.3:1.0/0003:04D9:A1DE.0019/input/input55
Sep 19 21:32:37 Merry kernel: hid-generic 0003:04D9:A1DE.0019: input,hidraw0: USB HID v1.11 Keyboard [HOLTEK USB-HID Keyboard] on usb-0000:07:00.0-2.3/input0
Sep 19 21:32:37 Merry kernel: hid-generic 0003:04D9:A1DE.001A: hiddev96,hidraw1: USB HID v1.11 Device [HOLTEK USB-HID Keyboard] on usb-0000:07:00.0-2.3/input1
Sep 19 21:32:37 Merry kernel: input: HOLTEK USB-HID Keyboard Mouse as /devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:04.0/0000:07:00.0/usb3/3-2/3-2.3/3-2.3:1.2/0003:04D9:A1DE.001B/input/input56
Sep 19 21:32:37 Merry kernel: input: HOLTEK USB-HID Keyboard System Control as /devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:04.0/0000:07:00.0/usb3/3-2/3-2.3/3-2.3:1.2/0003:04D9:A1DE.001B/input/input57
Sep 19 21:32:37 Merry kernel: input: HOLTEK USB-HID Keyboard Consumer Control as /devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:04.0/0000:07:00.0/usb3/3-2/3-2.3/3-2.3:1.2/0003:04D9:A1DE.001B/input/input58
Sep 19 21:32:37 Merry kernel: input: HOLTEK USB-HID Keyboard as /devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:04.0/0000:07:00.0/usb3/3-2/3-2.3/3-2.3:1.2/0003:04D9:A1DE.001B/input/input59
Sep 19 21:32:37 Merry kernel: input: HOLTEK USB-HID Keyboard as /devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:04.0/0000:07:00.0/usb3/3-2/3-2.3/3-2.3:1.2/0003:04D9:A1DE.001B/input/input60
Sep 19 21:32:37 Merry kernel: hid-generic 0003:04D9:A1DE.001B: input,hiddev97,hidraw2: USB HID v1.11 Mouse [HOLTEK USB-HID Keyboard] on usb-0000:07:00.0-2.3/input2
Sep 19 21:32:37 Merry kernel: hid-generic 0003:04D9:A1DE.001C: hiddev98,hidraw3: USB HID v1.11 Device [HOLTEK USB-HID Keyboard] on usb-0000:07:00.0-2.3/input3
Sep 19 21:32:37 Merry mtp-probe[293121]: checking bus 3, device 25: "/sys/devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:04.0/0000:07:00.0/usb3/3-2/3-2.3"
Sep 19 21:32:37 Merry mtp-probe[293121]: bus: 3, device: 25 was not an MTP device
Sep 19 21:32:38 Merry systemd-logind[678]: Watching system buttons on /dev/input/event4 (HOLTEK USB-HID Keyboard System Control)
Sep 19 21:32:38 Merry systemd-logind[678]: Watching system buttons on /dev/input/event7 (HOLTEK USB-HID Keyboard)
Sep 19 21:32:38 Merry systemd-logind[678]: Watching system buttons on /dev/input/event2 (HOLTEK USB-HID Keyboard)
Sep 19 21:32:38 Merry systemd-logind[678]: Watching system buttons on /dev/input/event5 (HOLTEK USB-HID Keyboard Consumer Control)
Sep 19 21:32:38 Merry mtp-probe[293157]: checking bus 3, device 25: "/sys/devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:04.0/0000:07:00.0/usb3/3-2/3-2.3"
Sep 19 21:32:38 Merry mtp-probe[293157]: bus: 3, device: 25 was not an MTP device

I'm not really sure what I'm looking for. Are there other logs I could search for? Anything I can do to fix this?

cvxmips

Member

Registered: 2023-09-20

Posts: 1

Re: KDE on wayland dies when switching with Displayport KVM switch

I also met this issue.

sixteenlines

Member

Registered: 2024-01-20

Posts: 2

Re: KDE on wayland dies when switching with Displayport KVM switch

I'm facing the same problem, any updates on this?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,267

Re: KDE on wayland dies when switching with Displayport KVM switch

Test plasma 6 by enabling the testing repos and kde-unstable. If you don't want to do that wait a month for that to get released.

sixteenlines

Member

Registered: 2024-01-20

Posts: 2

Re: KDE on wayland dies when switching with Displayport KVM switch

Test plasma 6 by enabling the testing repos and kde-unstable. If you don't want to do that wait a month for that to get released.

Problem is indeed solved on plasma 6 for me, thanks for the suggestion!