X is supposed to support hot-adding of input devices. Here are the relevant lines that show up during a failed boot but not a successful one:
-(II) config/udev: removing device Apple Inc. Apple Internal Keyboard / Trackpad -(II) evdev: Apple Inc. Apple Internal Keyboard / Trackpad: Close -(II) UnloadModule: "evdev" -(II) Unloading evdev -(II) config/udev: Adding input device Apple Inc. Apple Internal Keyboard / Trackpad (/dev/input/event6) -(**) Apple Inc. Apple Internal Keyboard / Trackpad: Applying InputClass "evdev keyboard catchall" -(II) Using input driver 'evdev' for 'Apple Inc. Apple Internal Keyboard / Trackpad' -(II) Loading /usr/lib/xorg/modules/input/evdev_drv.so -(**) Apple Inc. Apple Internal Keyboard / Trackpad: always reports core events -(**) evdev: Apple Inc. Apple Internal Keyboard / Trackpad: Device: "/dev/input/event6" -(--) evdev: Apple Inc. Apple Internal Keyboard / Trackpad: Vendor 0x5ac Product 0x249 -(--) evdev: Apple Inc. Apple Internal Keyboard / Trackpad: Found keys -(II) evdev: Apple Inc. Apple Internal Keyboard / Trackpad: Configuring as keyboard -(**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1.2/1-1.2:1.0/input/input14/event6" -(II) XINPUT: Adding extended input device "Apple Inc. Apple Internal Keyboard / Trackpad" (type: KEYBOARD, id 10) -(**) Option "xkb_rules" "evdev" -(**) Option "xkb_model" "pc105" -(**) Option "xkb_layout" "us" I don't agree that this is an issue in the udev layer; that looks like a plain evdev issue to me, since when the device is reopened it comes up with different features. However, it may be enlightening to see a /var/log/udev and matching Xorg.0.log from the same boot capturing this issue. If nothing else it may point to a workaround. Clint, could you provide such logs? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/936552 Title: MacBookAir 4,1 trackpad does not work with evdev/multitouch driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/936552/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
