digimend / wacom drivers do not recognize chinese clone

[Patola]

I have a chinese Gaomon 860T tablet, it is a clone of a Huion H610 tablet which in turn should be supported by digimend drivers (which are installed and loaded). However, it is only partially recognized as such - xsetwacom does not recognize, but libwacom-list-local-devices does, also xinput list correctly lists them but the wacom tablet entry in system settings says "No tablet detected".

I am left-handed and I need the system settings wacom configuration to work so that I can use the tablet as left-handed tablet. This is a showstopper for me and I need that working to do my job.

Here are the commands I used. I am using stock digimend-dkms from Ubuntu repository, which seems to be up-to-date with digimend github:

[17:01] [4853] [patola@trololo /tmp]% xsetwacom --list devices
[17:01] [4854] [patola@trololo /tmp]% /usr/bin/libwacom-list-local-devices
[Device]
Name=Huion H610 Pro
DeviceMatch=usb:256c:006e:HUION PenTablet Pen;usb:256c:006e:HUION PenTablet Pad;
Class=Bamboo
Width=10
Height=6
IntegratedIn=
Layout=huion-h610-pro.svg
Styli=0xffffd;

[Features]
Reversible=true
Stylus=true
Ring=false
Ring2=false
Touch=false
TouchSwitch=false
StatusLEDs=
NumStrips=0
Buttons=8
[Buttons]
Left=A;B;C;D;E;F;G;H;
Right=
Top=
Bottom=
Touchstrip=
Touchstrip2=
OLEDs=
Ring=
Ring2=
RingNumModes=0
Ring2NumModes=0
StripsNumModes=0

---------------------------------------------------------------
[Device]
Name=Huion H610 Pro
DeviceMatch=usb:256c:006e:HUION PenTablet Pen;usb:256c:006e:HUION PenTablet Pad;
Class=Bamboo
Width=10
Height=6
IntegratedIn=
Layout=huion-h610-pro.svg
Styli=0xffffd;

[Features]
Reversible=true
Stylus=true
Ring=false
Ring2=false
Touch=false
TouchSwitch=false
StatusLEDs=
NumStrips=0
Buttons=8
[Buttons]
Left=A;B;C;D;E;F;G;H;
Right=
Top=
Bottom=
Touchstrip=
Touchstrip2=
OLEDs=
Ring=
Ring2=
RingNumModes=0
Ring2NumModes=0
StripsNumModes=0

---------------------------------------------------------------
[17:01] [4855] [patola@trololo /tmp]% dpkg -l | grep digimend
ii digimend-dkms 6 all A collection of graphics tablet drivers by DIGImend project
[17:04] [4856] [patola@trololo /tmp]% xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ USB USB Keykoard id=9 [slave pointer (2)]
⎜ ↳ ImPS/2 Generic Wheel Mouse id=10 [slave pointer (2)]
⎜ ↳ HUION PenTablet Pad id=11 [slave pointer (2)]
⎜ ↳ HUION PenTablet Pen id=12 [slave pointer (2)]
⎜ ↳ HUION PenTablet Mouse id=13 [slave pointer (2)]
⎜ ↳ HUION PenTablet Consumer Control id=16 [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)]
    ↳ USB USB Keykoard id=8 [slave keyboard (3)]
    ↳ HUION PenTablet System Control id=14 [slave keyboard (3)]
    ↳ HUION PenTablet Keyboard id=15 [slave keyboard (3)]
[17:04] [4857] [patola@trololo /tmp]%

[Patola (patola)]

bound it to the package containing xsetwacom

[Patola (patola)]

I apologize, I did not tell my computer configuration:
Ubuntu 15.10 64 bits with all patches applied
[17:25] [4958] [patola@trololo patola]% lsb_release -a
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:cxx-3.0-amd64:cxx-3.0-noarch:cxx-3.1-amd64:cxx-3.1-noarch:cxx-3.2-amd64:cxx-3.2-noarch:cxx-4.0-amd64:cxx-4.0-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-3.1-amd64:desktop-3.1-noarch:desktop-3.2-amd64:desktop-3.2-noarch:desktop-4.0-amd64:desktop-4.0-noarch:desktop-4.1-amd64:desktop-4.1-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.0-amd64:graphics-3.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch:graphics-4.1-amd64:graphics-4.1-noarch:languages-3.2-amd64:languages-3.2-noarch:languages-4.0-amd64:languages-4.0-noarch:languages-4.1-amd64:languages-4.1-noarch:multimedia-3.2-amd64:multimedia-3.2-noarch:multimedia-4.0-amd64:multimedia-4.0-noarch:multimedia-4.1-amd64:multimedia-4.1-noarch:printing-3.2-amd64:printing-3.2-noarch:printing-4.0-amd64:printing-4.0-noarch:printing-4.1-amd64:printing-4.1-noarch:qt4-3.1-amd64:qt4-3.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 15.10
Release: 15.10
Codename: wily

[Patola (patola)]

However, I was able to get progress on this issue: now xsetwacom works. What was happening is that the first dbus entry for evdev had a catchall rule for tablets which assigned evdev drivers to the tablet before the wacom drivers would have a chance.

So I editted:
/usr/share/X11/xorg.conf.d/10-evdev.conf

and commented the catchall tablet rules and then added
/usr/share/X11/xorg.conf.d/50-huion.conf

With these contents:
# Huion tablets
Section "InputClass"
    Identifier "Huion class"
    MatchProduct "HUION"
    MatchIsTablet "on"
    MatchDevicePath "/dev/input/event*"
    Driver "wacom"
EndSection

Section "InputClass"
    Identifier "Huion buttons"
    MatchProduct "HUION"
    MatchIsKeyboard "on"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
EndSection

Section "InputClass"
    Identifier "Huion scroll"
    MatchProduct "HUION"
    MatchIsPointer "off"
    MatchIsKeyboard "off"
    MatchIsTouchpad "off"
    MatchIsTablet "off"
    MatchIsTouchscreen "off"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
EndSection

And now the tablet is recognized by xsetwacom:
[17:31] [4961] [patola@trololo patola]% xsetwacom --list
HUION PenTablet Pen stylus id: 10 type: STYLUS
HUION PenTablet Pad pad id: 11 type: PAD

However, the System Settings Wacom entry still does not recognize it, "No tablet detected". I guess I will have to do it manually in the meanwhile?

BTW, this is issue #26 from digimend drivers: https://github.com/DIGImend/digimend-kernel-drivers/issues/26

So there IS a bug to be fixed in xserver-xorg-core: /usr/share/X11/xorg.conf.d/10-evdev.conf and huion configuration.

[Jason Gerecke (killertofu)]

The xorg.conf.d configuration files are applied one after the other, so your edits to 10-evdev.conf should be unnecessary (since the settings from your 50-huion.conf file will be applied after it). I would suggest filing a bug with linuxwacom (on Sourceforge) indicating that Huion tablets are not covered by the 50-wacom.conf file like other tablets.

[Patola (patola)]

Jason,

The edits on 10-evdev.conf are not unnecessary. If general-purpose drivers are loaded before the huion drivers, the huion drivers are not loaded. The catch-all rule in 10-evdev.conf prevents the correct drivers from being loaded.

I'll see if I file a bug report in linuxwacom to see if they can integrate the huion entries. Thank you.