SUMMARY Using input-leap with libei on plasma 6.1 leads to noisy debug logs from kwin libeis and inputcapture subsystems whenever any input is sent to a client machine. This is captured by the user journal and leads to lot of spam in the journal of both server and client machines STEPS TO REPRODUCE 1. Install libportal from HEAD 2. Build input-leap from HEAD with -DQT_DEFAULT_MAJOR_VERSION=6 -DINPUTLEAP_BUILD_LIBEI=ON 3. Configure two machines as server and client with kde plasma 6.1 4. Run journalctl -f on client and server to tail the logs 5. Activate input-leap and move cursor from server to client. Try some input on the client using mouse/keyboard OBSERVED RESULT kwin logs spammed in journal from inputcapture subsystem on the server for every input sent to client kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin_inputcapture: Libeis: sending: object 0xff00000000000007 (eis_device@v2:frame(11)) signature 'ut' kwin_inputcapture: Libeis: sending: object 0xff00000000000008 (eis_pointer@v1:motion_relative(1)) signature 'ff' kwin logs spammed in journal from ei subsystem on the client for every input sent to client. eg. kwin_libeis: "InputLeap client eis absolute device" pointer motion absolute 1460 490 kwin_libeis: Frame for device "InputLeap client eis absolute device" kwin_libeis: Libeis: dispatching eis_pointer_absolute.motion_absolute() on object 0xff00000000000004 kwin_libeis: Libeis: queuing pending event type EIS_EVENT_POINTER_MOTION_ABSOLUTE (400) kwin_libeis: Libeis: dispatching eis_device.frame() on object 0xff00000000000003 kwin_libeis: Libeis: queuing event type EIS_EVENT_FRAME (100) kwin_libeis: "InputLeap client eis absolute device" pointer motion absolute 1474 488 kwin_libeis: Frame for device "InputLeap client eis absolute device" kwin_libeis: Libeis: dispatching eis_pointer_absolute.motion_absolute() on object 0xff00000000000004 kwin_libeis: Libeis: queuing pending event type EIS_EVENT_POINTER_MOTION_ABSOLUTE (400) kwin_libeis: Libeis: dispatching eis_device.frame() on object 0xff00000000000003 kwin_libeis: Libeis: queuing event type EIS_EVENT_FRAME (100) kwin_libeis: "InputLeap client eis absolute device" pointer motion absolute 1488 488 kwin_libeis: Frame for device "InputLeap client eis absolute device" kwin_libeis: Libeis: dispatching eis_pointer_absolute.motion_absolute() on object 0xff00000000000004 kwin_libeis: Libeis: queuing pending event type EIS_EVENT_POINTER_MOTION_ABSOLUTE (400) kwin_libeis: Libeis: dispatching eis_device.frame() on object 0xff00000000000003 kwin_libeis: Libeis: queuing event type EIS_EVENT_FRAME (100) kwin_libeis: "InputLeap client eis absolute device" pointer motion absolute 1500 486 kwin_libeis: Frame for device "InputLeap client eis absolute device" kwin_libeis: Libeis: dispatching eis_pointer_absolute.motion_absolute() on object 0xff00000000000004 kwin_libeis: Libeis: queuing pending event type EIS_EVENT_POINTER_MOTION_ABSOLUTE (400) kwin_libeis: Libeis: dispatching eis_device.frame() on object 0xff00000000000003 kwin_libeis: Libeis: queuing event type EIS_EVENT_FRAME (100) kwin_libeis: "InputLeap client eis absolute device" pointer motion absolute 1514 484 kwin_libeis: Frame for device "InputLeap client eis absolute device" kwin_libeis: Libeis: dispatching eis_pointer_absolute.motion_absolute() on object 0xff00000000000004 kwin_libeis: Libeis: queuing pending event type EIS_EVENT_POINTER_MOTION_ABSOLUTE (400) kwin_libeis: Libeis: dispatching eis_device.frame() on object 0xff00000000000003 kwin_libeis: Libeis: queuing event type EIS_EVENT_FRAME (100) kwin_libeis: "InputLeap client eis absolute device" pointer motion absolute 1526 484 kwin_libeis: Frame for device "InputLeap client eis absolute device" kwin_libeis: Libeis: dispatching eis_device.stop_emulating() on object 0xff00000000000007 kwin_libeis: Libeis: queuing event type EIS_EVENT_DEVICE_STOP_EMULATING (201) kwin_libeis: Libeis: dispatching eis_device.stop_emulating() on object 0xff0000000000000b kwin_libeis: Libeis: queuing event type EIS_EVENT_DEVICE_STOP_EMULATING (201) kwin_libeis: Libeis: dispatching eis_device.stop_emulating() on object 0xff00000000000003 kwin_libeis: Libeis: queuing event type EIS_EVENT_DEVICE_STOP_EMULATING (201) kwin_libeis: Device "InputLeap client eis pointer" stops emulating kwin_libeis: Device "InputLeap client eis keyboard" stops emulating kwin_libeis: Device "InputLeap client eis absolute device" stops emulating EXPECTED RESULT Debug logs should be gated behind a verbosity/debug kwin flag/environment and not spam the journal under regular operation SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux KDE Plasma Version: 6.1.2 KDE Frameworks Version: 6.3.0 Qt Version: 6.7.2
I was able to work around the issue by creating a systemd dropin file for plasma-kwin_wayland.service [Service] Environment=QT_LOGGING_RULES="kwin_inputcapture.debug=false;kwin_libeis.debug=false"
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/6094
Git commit 5b17454aa5ed0d7eeeef9849a699103ddcd85a6a by David Edmundson. Committed on 12/07/2024 at 12:39. Pushed by davidedmundson into branch 'master'. eis: Change default logging category to warning This makes it consistent with other debug categories M +2 -2 src/plugins/eis/CMakeLists.txt https://invent.kde.org/plasma/kwin/-/commit/5b17454aa5ed0d7eeeef9849a699103ddcd85a6a