On *some* reboots my Macbook’s touchpad does not work properly; it behaves like mouse wheel, I can only scroll. Only when I press it down, I can move the pointer to the right, but never to the left.
This happens both with synaptics and libinput driver. Restarting xorg-server does not help; this appears to be an issue with the order in which udev rules are applied. Apparently my bcm5974 touchpad is recognized by udev as a mouse sometimes (?), because when diffing /var/log/gdm/greeter.log I see a mouse being recognized (it is never called bcm5974) instead of a bcm5974 touchpad. $ sudo diff /var/log/gdm/greeter.log.1 /var/log/gdm/greeter.log.2 […] 381,387c381,387 < (II) config/udev: Adding input device Apple Inc. Apple Internal Keyboard / Trackpad (/dev/input/event14) < (**) Apple Inc. Apple Internal Keyboard / Trackpad: Applying InputClass "evdev pointer catchall" < (**) Apple Inc. Apple Internal Keyboard / Trackpad: Applying InputClass "libinput pointer catchall" < (II) Using input driver 'libinput' for 'Apple Inc. Apple Internal Keyboard / Trackpad' < (II) systemd-logind: got fd for /dev/input/event14 13:78 fd 32 paused 0 < (**) Apple Inc. Apple Internal Keyboard / Trackpad: always reports core events < (**) Option "Device" "/dev/input/event14" --- > (II) config/udev: Adding input device bcm5974 (/dev/input/event12) > (**) bcm5974: Applying InputClass "evdev touchpad catchall" > (**) bcm5974: Applying InputClass "libinput touchpad catchall" > (II) Using input driver 'libinput' for 'bcm5974' > (II) systemd-logind: got fd for /dev/input/event12 13:76 fd 32 paused 0 > (**) bcm5974: always reports core events > (**) Option "Device" "/dev/input/event12" 389,393c389,393 < (II) event14 - Apple Inc. Apple Internal Keyboard / Trackpad: is tagged by udev as: Mouse < (II) event14 - Apple Inc. Apple Internal Keyboard / Trackpad: device is a pointer < (II) event14 - Apple Inc. Apple Internal Keyboard / Trackpad: device removed < (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:06.0/usb4/4-3/4-3:1.2/input/input14/event14" < (II) XINPUT: Adding extended input device "Apple Inc. Apple Internal Keyboard / Trackpad" (type: MOUSE, id 12) --- > (II) event12 - bcm5974: is tagged by udev as: Touchpad > (II) event12 - bcm5974: device is a touchpad > (II) event12 - bcm5974: device removed > (**) Option "config_info" > "udev:/sys/devices/pci0000:00/0000:00:06.0/usb4/4-3/4-3:1.2/input/input12/event12" > (II) XINPUT: Adding extended input device "bcm5974" (type: TOUCHPAD, id 12) 395,400c395,400 < (**) Apple Inc. Apple Internal Keyboard / Trackpad: (accel) selected scheme none/0 < (**) Apple Inc. Apple Internal Keyboard / Trackpad: (accel) acceleration factor: 2.000 < (**) Apple Inc. Apple Internal Keyboard / Trackpad: (accel) acceleration threshold: 4 < (II) event14 - Apple Inc. Apple Internal Keyboard / Trackpad: is tagged by udev as: Mouse < (II) event14 - Apple Inc. Apple Internal Keyboard / Trackpad: device is a pointer < (II) config/udev: Adding input device Apple Inc. Apple Internal Keyboard / Trackpad (/dev/input/mouse1) --- > (**) bcm5974: (accel) selected scheme none/0 > (**) bcm5974: (accel) acceleration factor: 2.000 > (**) bcm5974: (accel) acceleration threshold: 4 > (II) event12 - bcm5974: is tagged by udev as: Touchpad > (II) event12 - bcm5974: device is a touchpad > (II) config/udev: Adding input device bcm5974 (/dev/input/mouse0) […] Regards, Florian
