Intuos pro S (PTH-460) touch ring center button does nothing

[RandomReaper]

The center button generates no event (tested with xev).
xserver-xorg-input-wacom 1:0.39.0-0ubuntu1

[jigpu]

I assume you're using the GNOME desktop, which is consuming these events before xev sees them. You should be able to see them if you use something like xinput test-xi2 <pad_id> or run xev under a non-GNOME desktop.

[RandomReaper]

Thank you for your response, I'm using xfce here. Here is some more information:

If I understand well, it maybe a problem with ds.buttons with a value of 0 for the center button.

Output of xinput test-xi2 <my-pad-id> for the first button press+release :

    device: 15 (15)
    detail: 1
    flags: 
    valuators:
          3: 0.00 (0.00)
          4: 0.00 (0.00)
          5: 0.00 (0.00)

EVENT type 17 (RawMotion)
    device: 15 (15)
    detail: 0
    flags: 
    valuators:
          3: 0.00 (0.00)
          4: 0.00 (0.00)
          5: 0.00 (0.00)

EVENT type 12 (PropertyEvent)
     property: 526 'Wacom Serial IDs'
     changed: modified
EVENT type 16 (RawButtonRelease)
    device: 15 (15)
    detail: 1
    flags: 
    valuators:
          3: 0.00 (0.00)
          4: 0.00 (0.00)
          5: 0.00 (0.00)

EVENT type 12 (PropertyEvent)
     property: 526 'Wacom Serial IDs'
     changed: modified

For the central button press+release:

EVENT type 12 (PropertyEvent)
     property: 526 'Wacom Serial IDs'
     changed: modified
EVENT type 12 (PropertyEvent)
     property: 526 'Wacom Serial IDs'
     changed: modified

Debug info from /var/log/Xorg.0.log, first button press+release:

[  3335.960] (II) /dev/input/event23 (10:wcmReadPacket): fd=85
[  3335.960] (II) /dev/input/event23 (1:wcmReadPacket): pos=0 remaining=256
[  3335.961] (II) /dev/input/event23 (10:wcmReadPacket): buffer has 72 bytes
[  3335.961] (II) /dev/input/event23 (10:usbParseEvent): 
[  3335.961] (II) /dev/input/event23 (10:usbParseEvent): 
[  3335.961] (II) /dev/input/event23 (10:usbParseEvent): 
[  3335.961] (II) /dev/input/event23 (6:usbDispatchEvents): 3 events received
[  3335.961] (II) /dev/input/event23 (10:usbDispatchEvents): Dirty flag set on channel 17; sending event.
[  3335.961] (II) /dev/input/event23 (10:wcmEvent): channel = 17
[  3335.961] (II) /dev/input/event23 (10:wcmEvent): c=17 i=15 t=16 s=4294967295 x=0 y=0 b=1 p=0 rz=0 tx=0 ty=0 aw=0 aw2=0 rw=0 t=0 px=1 st=0 cs=4 
[  3335.961] (II) /dev/input/event23 (10:commonDispatchDevice): device type = 16
[  3335.961] (II) /dev/input/event23 (10:wcmCheckSuppress): level = 2 return value = 8
[  3336.050] (II) /dev/input/event23 (10:wcmReadPacket): fd=85
[  3336.050] (II) /dev/input/event23 (1:wcmReadPacket): pos=0 remaining=256
[  3336.050] (II) /dev/input/event23 (10:wcmReadPacket): buffer has 72 bytes
[  3336.050] (II) /dev/input/event23 (10:usbParseEvent): 
[  3336.051] (II) /dev/input/event23 (10:usbParseEvent): 
[  3336.051] (II) /dev/input/event23 (10:usbParseEvent): 
[  3336.051] (II) /dev/input/event23 (6:usbDispatchEvents): 3 events received
[  3336.051] (II) /dev/input/event23 (10:usbDispatchEvents): Dirty flag set on channel 17; sending event.
[  3336.051] (II) /dev/input/event23 (10:wcmEvent): channel = 17
[  3336.051] (II) /dev/input/event23 (10:wcmEvent): c=17 i=15 t=16 s=4294967295 x=0 y=0 b=0 p=0 rz=0 tx=0 ty=0 aw=0 aw2=0 rw=0 t=0 px=0 st=0 cs=4 
[  3336.051] (II) /dev/input/event23 (10:commonDispatchDevice): device type = 16
[  3336.051] (II) /dev/input/event23 (10:wcmCheckSuppress): level = 2 return value = 8

Center button press+release:

[  3456.432] (II) /dev/input/event23 (1:wcmReadPacket): pos=0 remaining=256
[  3456.432] (II) /dev/input/event23 (10:wcmReadPacket): buffer has 48 bytes
[  3456.432] (II) /dev/input/event23 (10:usbParseEvent): 
[  3456.432] (II) /dev/input/event23 (10:usbParseEvent): 
[  3456.433] (II) /dev/input/event23 (6:usbDispatchEvents): 2 events received
[  3456.433] (II) /dev/input/event23 (10:usbDispatchEvents): Dirty flag set on channel 17; sending event.
[  3456.433] (II) /dev/input/event23 (10:wcmEvent): channel = 17
[  3456.433] (II) /dev/input/event23 (10:wcmEvent): c=17 i=15 t=16 s=4294967295 x=0 y=0 b=0 p=0 rz=0 tx=0 ty=0 aw=0 aw2=0 rw=0 t=0 px=1 st=0 cs=4 
[  3456.433] (II) /dev/input/event23 (10:commonDispatchDevice): device type = 16
[  3456.433] (II) /dev/input/event23 (10:wcmCheckSuppress): level = 2 return value = 8
[  3456.482] (II) /dev/input/event23 (10:wcmReadPacket): fd=85
[  3456.482] (II) /dev/input/event23 (1:wcmReadPacket): pos=0 remaining=256
[  3456.482] (II) /dev/input/event23 (10:wcmReadPacket): buffer has 48 bytes
[  3456.482] (II) /dev/input/event23 (10:usbParseEvent): 
[  3456.482] (II) /dev/input/event23 (10:usbParseEvent): 
[  3456.482] (II) /dev/input/event23 (6:usbDispatchEvents): 2 events received
[  3456.482] (II) /dev/input/event23 (10:usbDispatchEvents): Dirty flag set on channel 17; sending event.
[  3456.482] (II) /dev/input/event23 (10:wcmEvent): channel = 17
[  3456.482] (II) /dev/input/event23 (10:wcmEvent): c=17 i=15 t=16 s=4294967295 x=0 y=0 b=0 p=0 rz=0 tx=0 ty=0 aw=0 aw2=0 rw=0 t=0 px=0 st=0 cs=4 
[  3456.482] (II) /dev/input/event23 (10:commonDispatchDevice): device type = 16
[  3456.482] (II) /dev/input/event23 (10:wcmCheckSuppress): level = 2 return value = 8

[jigpu]

Looks like this is an issue specific to the Bluetooth connection. I believe I've pinned down the problem and pushed a fix to my repository in the "fix-112" branch.

Please install git (sudo apt install git or sudo yum install git) and clone the development code by running the following command:

git clone https://github.com/jigpu/input-wacom.git -b fix-112

Next, follow the input-wacom build instructions, skipping the "Download" section and instead using the code cloned from git. Once the driver has been built and installed, please either reboot or follow the "Module Loading" instructions to ensure the driver is loaded. Connect your tablet as normal and test to see if you see button events from the center button now.

[RandomReaper]

You where right, the problem was bluetooth specific. The problem is fixed by this patch.

Nice job, thank you!

[jigpu]

Thanks -- I'll go ahead and forward the fix off to the Linux kernel for integration.

[jigpu]

Fixed with commit dcce8ef8f70a8e38e6c47c1bae8b312376c04420 in both stable (v5.3+) and upstream kernel (v5.7+) trees.