After commenting the corresponding lines /lib/udev/hwdb.d/60-keyboard.hwdb out, issuing # systemd-hwdb update and rebooting, the middle slider up/down keys stopped producing any effect completely at least in Firefox (i.e., it got worse). The "Failed to call ..." error is gone from the output of journalctl -b, though. Running evtest and checking event8 produces absolutely no effect for the slider keys. Running evtest and checking event9 produces the following effect for the slider keys up (+) followed by down (-): Event: time 1597336850.366186, type 4 (EV_MSC), code 4 (MSC_SCAN), value c022d Event: time 1597336850.366186, type 1 (EV_KEY), code 418 (KEY_ZOOMIN), value 1 Event: time 1597336850.366186, -------------- SYN_REPORT ------------ Event: time 1597336850.510185, type 4 (EV_MSC), code 4 (MSC_SCAN), value c022d Event: time 1597336850.510185, type 1 (EV_KEY), code 418 (KEY_ZOOMIN), value 0 Event: time 1597336850.510185, -------------- SYN_REPORT ------------ Event: time 1597336851.454182, type 4 (EV_MSC), code 4 (MSC_SCAN), value c022e Event: time 1597336851.454182, type 1 (EV_KEY), code 419 (KEY_ZOOMOUT), value 1 Event: time 1597336851.454182, -------------- SYN_REPORT ------------ Event: time 1597336851.526184, type 4 (EV_MSC), code 4 (MSC_SCAN), value c022e Event: time 1597336851.526184, type 1 (EV_KEY), code 419 (KEY_ZOOMOUT), value 0 Event: time 1597336851.526184, -------------- SYN_REPORT ------------
I'll revert to the prior default setting of /lib/udev/hwdb.d/60-keyboard.hwdb in the meantime. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890186 Title: Failed to call EVIOCSKEYCODE with scan code 0xc022d, and key code 103: Invalid argument To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1890186/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs