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Re: GuixSD + GNOME + Wacom Tablet = No tablet detected?


From: Chris Marusich
Subject: Re: GuixSD + GNOME + Wacom Tablet = No tablet detected?
Date: Tue, 05 Apr 2016 22:18:18 -0700
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

address@hidden (Ludovic Courtès) writes:

> I think the problem is that our xserver.conf does not include
> xf86-input-wacom to its search path; see (gnu services xorg).
>
> Could you try adding it there and reconfiguring from tree (using
> ‘./pre-inst-env guix system reconfigure’)?

I've tried that (see attached patch).  When I rebooted, the behavior was
the same.  I also tried adding both "libwacom" and "xf86-input-wacom" to
the globally installed packages, but that didn't work, either.

There are messages in the Xorg.0.log file.  However, these messages give
no indication about why I'm seeing the "No tablet detected" error when
viewing GNOME's "All Settings" > "Wacom Tablet".

--8<---------------cut here---------------start------------->8---
/var/log/Xorg.0.log:[    11.922] (II) config/udev: Adding input device Wacom 
Intuos3 4x6 Pen (/dev/input/event6)
/var/log/Xorg.0.log:[    11.922] (**) Wacom Intuos3 4x6 Pen: Applying 
InputClass "evdev tablet catchall"
/var/log/Xorg.0.log:[    11.924] (II) Using input driver 'evdev' for 'Wacom 
Intuos3 4x6 Pen'
/var/log/Xorg.0.log:[    11.924] (**) Wacom Intuos3 4x6 Pen: always reports 
core events
/var/log/Xorg.0.log:[    11.924] (**) evdev: Wacom Intuos3 4x6 Pen: Device: 
"/dev/input/event6"
/var/log/Xorg.0.log:[    11.980] (--) evdev: Wacom Intuos3 4x6 Pen: Vendor 
0x56a Product 0xb7
/var/log/Xorg.0.log:[    11.980] (--) evdev: Wacom Intuos3 4x6 Pen: Found 9 
mouse buttons
/var/log/Xorg.0.log:[    11.980] (--) evdev: Wacom Intuos3 4x6 Pen: Found 
scroll wheel(s)
/var/log/Xorg.0.log:[    11.980] (--) evdev: Wacom Intuos3 4x6 Pen: Found 
relative axes
/var/log/Xorg.0.log:[    11.980] (--) evdev: Wacom Intuos3 4x6 Pen: Found 
absolute axes
/var/log/Xorg.0.log:[    11.980] (--) evdev: Wacom Intuos3 4x6 Pen: Found x and 
y absolute axes
/var/log/Xorg.0.log:[    11.980] (--) evdev: Wacom Intuos3 4x6 Pen: Found 
absolute tablet.
/var/log/Xorg.0.log:[    11.980] (II) evdev: Wacom Intuos3 4x6 Pen: Configuring 
as tablet
/var/log/Xorg.0.log:[    11.980] (II) evdev: Wacom Intuos3 4x6 Pen: Adding 
scrollwheel support
/var/log/Xorg.0.log:[    11.980] (**) evdev: Wacom Intuos3 4x6 Pen: 
YAxisMapping: buttons 4 and 5
/var/log/Xorg.0.log:[    11.980] (**) evdev: Wacom Intuos3 4x6 Pen: 
EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
/var/log/Xorg.0.log:[    11.980] (II) XINPUT: Adding extended input device 
"Wacom Intuos3 4x6 Pen" (type: TABLET, id 10)
/var/log/Xorg.0.log:[    11.980] (WW) evdev: Wacom Intuos3 4x6 Pen: touchpads, 
tablets and touchscreens ignore relative axes.
/var/log/Xorg.0.log:[    11.980] (II) evdev: Wacom Intuos3 4x6 Pen: initialized 
for absolute axes.
/var/log/Xorg.0.log:[    11.980] (**) Wacom Intuos3 4x6 Pen: (accel) keeping 
acceleration scheme 1
/var/log/Xorg.0.log:[    11.980] (**) Wacom Intuos3 4x6 Pen: (accel) 
acceleration profile 0
/var/log/Xorg.0.log:[    11.980] (**) Wacom Intuos3 4x6 Pen: (accel) 
acceleration factor: 2.000
/var/log/Xorg.0.log:[    11.980] (**) Wacom Intuos3 4x6 Pen: (accel) 
acceleration threshold: 4
/var/log/Xorg.0.log:[    11.981] (II) config/udev: Adding input device Wacom 
Intuos3 4x6 Pen (/dev/input/mouse0)
/var/log/Xorg.0.log:[    11.981] (II) config/udev: Adding input device Wacom 
Intuos3 4x6 Pad (/dev/input/event7)
/var/log/Xorg.0.log:[    11.981] (**) Wacom Intuos3 4x6 Pad: Applying 
InputClass "evdev tablet catchall"
/var/log/Xorg.0.log:[    11.981] (II) Using input driver 'evdev' for 'Wacom 
Intuos3 4x6 Pad'
/var/log/Xorg.0.log:[    11.981] (**) Wacom Intuos3 4x6 Pad: always reports 
core events
/var/log/Xorg.0.log:[    11.981] (**) evdev: Wacom Intuos3 4x6 Pad: Device: 
"/dev/input/event7"
/var/log/Xorg.0.log:[    11.981] (--) evdev: Wacom Intuos3 4x6 Pad: Vendor 
0x56a Product 0xb7
/var/log/Xorg.0.log:[    11.981] (--) evdev: Wacom Intuos3 4x6 Pad: Found 8 
mouse buttons
/var/log/Xorg.0.log:[    11.981] (--) evdev: Wacom Intuos3 4x6 Pad: Found 
absolute axes
/var/log/Xorg.0.log:[    11.982] (--) evdev: Wacom Intuos3 4x6 Pad: Found x and 
y absolute axes
/var/log/Xorg.0.log:[    11.982] (--) evdev: Wacom Intuos3 4x6 Pad: Found 
absolute tablet.
/var/log/Xorg.0.log:[    11.982] (II) evdev: Wacom Intuos3 4x6 Pad: Configuring 
as tablet
/var/log/Xorg.0.log:[    11.982] (**) evdev: Wacom Intuos3 4x6 Pad: 
YAxisMapping: buttons 4 and 5
/var/log/Xorg.0.log:[    11.982] (**) evdev: Wacom Intuos3 4x6 Pad: 
EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
/var/log/Xorg.0.log:[    11.982] (II) XINPUT: Adding extended input device 
"Wacom Intuos3 4x6 Pad" (type: TABLET, id 11)
/var/log/Xorg.0.log:[    11.982] (II) evdev: Wacom Intuos3 4x6 Pad: initialized 
for absolute axes.
/var/log/Xorg.0.log:[    11.982] (**) Wacom Intuos3 4x6 Pad: (accel) keeping 
acceleration scheme 1
/var/log/Xorg.0.log:[    11.982] (**) Wacom Intuos3 4x6 Pad: (accel) 
acceleration profile 0
/var/log/Xorg.0.log:[    11.982] (**) Wacom Intuos3 4x6 Pad: (accel) 
acceleration factor: 2.000
/var/log/Xorg.0.log:[    11.982] (**) Wacom Intuos3 4x6 Pad: (accel) 
acceleration threshold: 4
/var/log/Xorg.0.log:[    11.982] (II) config/udev: Adding input device Wacom 
Intuos3 4x6 Pad (/dev/input/js0)
--8<---------------cut here---------------end--------------->8---

Does GNOME store logs somewhere that might provide more info on why the
applet in the control center isn't working (I think that's what it's
called)?

-- 
Chris

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