I also reproduced this issue on N4, OSK does not come up once BT mouse is connected, no matter BT keyboard is connected or not, the OSK will come up if disconnect the BT mouse, got the below output, fyi.
$ adb shell ./lsinput /dev/input/event0 bustype : (null) vendor : 0x0 product : 0x0 version : 0 name : "pmic8xxx_pwrkey" phys : "pmic8xxx_pwrkey/input0" bits ev : EV_SYN EV_KEY /dev/input/event1 bustype : BUS_I2C vendor : 0x1 product : 0x1 version : 1 name : "keypad_8064" phys : "keypad_8064/input0" bits ev : EV_SYN EV_KEY EV_MSC /dev/input/event2 bustype : (null) vendor : 0x0 product : 0x0 version : 0 name : "touch_dev" bits ev : EV_SYN EV_ABS /dev/input/event3 bustype : (null) vendor : 0x0 product : 0x0 version : 0 name : "apq8064-tabla-snd-card Button Ja" phys : "ALSA" bits ev : EV_SYN EV_KEY /dev/input/event4 bustype : (null) vendor : 0x0 product : 0x0 version : 0 name : "apq8064-tabla-snd-card Headset J" phys : "ALSA" bits ev : EV_SYN EV_SW /dev/input/event5 bustype : (null) vendor : 0x1 product : 0x1 version : 1 name : "hs_detect" bits ev : EV_SYN EV_KEY EV_SW /dev/input/event6 bustype : BUS_BLUETOOTH vendor : 0x46d product : 0xb014 version : 4608 name : "Bluetooth Mouse M336/M337/M535" phys : "e1:d1:70:f7:d6:98" uniq : "ae:5b:98:20:1f:00" bits ev : EV_SYN EV_KEY EV_REL EV_ABS EV_MSC EV_LED EV_REP -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1521518 Title: OSK doesn't come up in login screen if mouse connected on nexus 7 Status in canonical-pocket-desktop: Incomplete Status in unity8 package in Ubuntu: Incomplete Bug description: 1. Boot nexus 7 2. In the login screen, test that OSK works by tapping the password textfield 3. swipe keyboard back down after testing it works 4. Turn on Bluetooth mouse to get a mouse cursor 5. Click on password textfield OSK doesn't pop up, touch tapping on the field doesn't bring up the OSK anymore either. ie. The login screen is not usable with mouse connected - cannot type in password via OSK since it doesn't come up when clicking the password textfield with mouse. See attached screenshot. Focus on textfield. Would expect OSK to show up. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-pocket-desktop/+bug/1521518/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

