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[Launchpad Bug Tracker <1575957@xxxxxxxxxxxxxxxxxx>]

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Gaomon 860T tablet was being used normally and also recognized
automatically in Ubuntu 15.10. However, when I did the upgrade to 16.04
it just stopped being recognized. The USB devices show in dmesg and the
tablet also works normally in the dual-boot windows, also the modules
seem to be loaded, the digimend-dkms package is installed, but the
device(s) simply do not show up at all, as if the tablet was not plugged
in.

dmesg| grep huion shows this:
[  152.462541] usb 2-1.2.1: Manufacturer: HUION
[  152.464442] uclogic 0003:256C:006E.0005: hidraw1: USB HID v1.0b Keypad [HUION PenTablet] on usb-0000:00:1d.0-1.2.1/input0
[  152.465795] uclogic 0003:256C:006E.0006: hiddev0,hidraw2: USB HID v1.11 Mouse [HUION PenTablet] on usb-0000:00:1d.0-1.2.1/input1
[  152.466964] uclogic 0003:256C:006E.0007: hidraw3: USB HID v1.0b Keyboard [HUION PenTablet] on usb-0000:00:1d.0-1.2.1/input2

however, nowhere the devices are being created:
[19:52] [6904] [patola@ovo patola]% xinput list        
⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ 2.4G Wireless Optical Mouse               id=10   [slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                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)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Sleep Button                              id=9    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=11   [slave  keyboard (3)]

Compare with the display of xinput list when the tablet worked (in a
different machine):

⎡ 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)]


Again, libwacom-list-local-devices does not show up, only the bogus device:

[19:54] [6906] [patola@ovo patola]% /usr/bin/libwacom-list-local-devices
[Device]
Name=Wacom Serial Tablet WACf004
DeviceMatch=serial:0000:0000;
Class=ISDV4
Width=0
Height=0
IntegratedIn=Display;System;
Styli=0xfffff;0xffffe;

[Features]
Reversible=false
Stylus=true
Ring=false
Ring2=false
Touch=false
TouchSwitch=false
StatusLEDs=
NumStrips=0
Buttons=0
---------------------------------------------------------------

compare with the output for when it worked (in a different machine):
[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

---------------------------------------------------------------

System is Ubuntu 16.04 64 bits
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04 LTS
Release:        16.04
Codename:       xenial

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment xenial
-- 
huion tablet is not recognized anymore in Ubuntu 16.04
https://bugs.launchpad.net/bugs/1575957
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