Ubuntu 18.04 LTS / libwacom: Wacom Bamboo stylus buttons no longer work

Just updated my PC from the last LTS Ubuntu distro to 18.04LTS, and the stylus on my Wacom Wireless Bamboo tablet immediately lost all button function. The system seems to be tracking the stylus itself, as moving it over the pad causes the cursor to move around the screen, but touching the stylus to the pad and/or clicking the button on the stylus body gets no response. The touchpad function on the tablet itself, on the other hand, responds to finger drags and taps as cursor movement and clicks, respectively. The A/B buttons at the foot of the tablet do not respond, same as the stylus buttons. Deets as follows: **Tablet Model:** Wacom Bamboo Pad (Wireless), CTH-300/K **System:** Ubuntu 18.04.1 LTS, 64-bit **Devices > Wacom Tablet:** Displays "No stylus found / Please move your stylus to the proximity of the tablet to configure it" and doesn't respond to stylus cursor movement in that area. Tablet > Wacom Bamboo Pad Wireless > Tracking Mode is "Tablet (absolute)". Trying to use "Map Buttons..." to set the A/B tablet buttons doesn't work; they display on screen for mapping but don't respond to being pressed. **libwacom-list-local-devices:** *One point I noticed:* Libwacom lists the tablet stylus as 0xfffff;0xffffe, which are the codes for a default standard stylus and a stylus with an eraser. The stylus for the Bamboo Pad doesn't have an eraser or a rocker button, and should be set as type 0xffffd. Not sure if this means it's related to this bug or not. [Device] Name=Wacom Bamboo Pad Wireless DeviceMatch=usb:056a:0319; Class=Bamboo Width=4 Height=3 IntegratedIn= Layout=bamboo-pad.svg Styli=0xfffff;0xffffe; [Features] Reversible=false Stylus=true Ring=false Ring2=false Touch=true TouchSwitch=false StatusLEDs= NumStrips=0 Buttons=2 [Buttons] Left= Right= Top= Bottom=A;B; Touchstrip= Touchstrip2= OLEDs= Ring= Ring2= EvdevCodes=0x110;0x111; RingNumModes=0 Ring2NumModes=0 StripsNumModes=0 --------------------------------------------------------------- [Device] Name=Wacom Bamboo Pad Wireless DeviceMatch=usb:056a:0319; Class=Bamboo Width=4 Height=3 IntegratedIn= Layout=bamboo-pad.svg Styli=0xfffff;0xffffe; [Features] Reversible=false Stylus=true Ring=false Ring2=false Touch=true TouchSwitch=false StatusLEDs= NumStrips=0 Buttons=2 [Buttons] Left= Right= Top= Bottom=A;B; Touchstrip= Touchstrip2= OLEDs= Ring= Ring2= EvdevCodes=0x110;0x111; RingNumModes=0 Ring2NumModes=0 StripsNumModes=0 --------------------------------------------------------------- **xinput --list:** *Also lists an eraser that isn't there* ⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0 id=9 [slave pointer (2)] ⎜ ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0 id=10 [slave pointer (2)] ⎜ ↳ Wacom Wireless Bamboo PAD Pen stylus id=11 [slave pointer (2)] ⎜ ↳ Wacom Wireless Bamboo PAD Finger touch id=15 [slave pointer (2)] ⎜ ↳ Wacom Wireless Bamboo PAD Pen eraser id=12 [slave pointer (2)] ⎣ Virtual core keyboard id=3 [master keyboard (2)] ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)] ↳ Power Button id=6 [slave keyboard (3)] ↳ Power Button id=7 [slave keyboard (3)] ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0 id=8 [slave keyboard (3)] ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0 id=13 [slave keyboard (3)] ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0 id=14 [slave keyboard (3)] **xinput props:** *Noted that there are far more buttons listed than the stylus actually has.* /usr/share/libwacom$ xinput --list-props "Wacom Wireless Bamboo PAD Pen stylus" Device 'Wacom Wireless Bamboo PAD Pen stylus': Device Enabled (139): 1 Coordinate Transformation Matrix (141): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000 Device Accel Profile (270): 0 Device Accel Constant Deceleration (271): 1.000000 Device Accel Adaptive Deceleration (272): 1.000000 Device Accel Velocity Scaling (273): 10.000000 Device Node (262): "/dev/input/event5" Wacom Tablet Area (299): 0, 0, 10690, 6680 Wacom Rotation (300): 0 Wacom Pressurecurve (301): 0, 0, 100, 100 Wacom Serial IDs (302): 793, 1, 2, 0, 0 Wacom Serial ID binding (303): 0 Wacom Pressure Threshold (304): 26 Wacom Sample and Suppress (305): 2, 4 Wacom Enable Touch (306): 1 Wacom Hover Click (307): 1 Wacom Enable Touch Gesture (308): 0 Wacom Touch Gesture Parameters (309): 0, 0, 250 Wacom Tool Type (310): "STYLUS" (292) Wacom Button Actions (311): "Wacom button action 0" (312), "Wacom button action 1" (313), "Wacom button action 2" (314), "None" (0), "None" (0), "None" (0), "None" (0), "Wacom button action 3" (315) Wacom button action 0 (312): 1572865 Wacom button action 1 (313): 1572866 Wacom button action 2 (314): 1572867 Wacom button action 3 (315): 1572872 Wacom Pressure Recalibration (316): 1 Wacom Panscroll Threshold (317): 1209 Device Product ID (263): 1386, 793 Wacom Debug Levels (318): 0, 0 **xinput test "Wacom Wireless Bamboo PAD Pen stylus":** *Pen movement:* motion a=7676 a[1] =3667 a[2] =0 a=0 a=0 a=-900 motion a=7663 a[1] =3660 a[2] =0 a=0 a=0 a=-900 motion a=7656 a[1] =3650 a[2] =0 a=0 a=0 a=-900 motion a=7657 a[1] =3642 a[2] =0 a=0 a=0 a=-900 motion a=7669 a[1] =3637 a[2] =0 a=0 a=0 a=-900 motion a=7688 a[1] =3635 a[2] =0 a=0 a=0 a=-900 (etc.) *Pen "click"/touch:* motion a=7658 a[1] =3641 a[2] =31164 a=0 a=0 a=-900 *Pen button click:* No noticeable response ----------------- If anyone has any ideas on how to proceed, I'd appreciate it. I'd like to try to remove the extra button mapping, reassign libwacom's styli code for the tablet, and/or find out exactly what the button action codes correspond to, but I'm having difficulty finding information on how to do any of that. (And I'd rather not kill what little functionality I still have.) I've also had issues with assigning persistent settings to this tablet in the past , though I'm not sure if that has anything to do with what's going on now.