ColorHug2 calibration failure on Archlinux with Gnome

[matthias...@delair-tech.com]

Hi,

I have downloaded and flashed the 2.0.6 firmware from http://www.hughski.com/downloads/colorhug2/firmware/ (the factory firmware was 2.0.3 if I remember well).
The device is detected

$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 006: ID 04f2:b45d Chicony Electronics Co., Ltd
Bus 001 Device 005: ID 8087:0a2a Intel Corp.
Bus 001 Device 004: ID 04f3:012d Elan Microelectronics Corp.
Bus 001 Device 003: ID 1199:a001 Sierra Wireless, Inc.
Bus 001 Device 008: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
Bus 001 Device 007: ID 273f:1004 Hughski Limited ColorHug2
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

But the calibration fails. When I gcm-picker :

(gcm-picker:6548): GnomeColorManager-WARNING **: failed to get sample: usb:00:01: Invalid read: retval=0x0a [Invalid value] cmd=0x35 [get-remote-hash] (expected 0x35 [get-remote-hash]) len=64 (expected 22 or 64)

How to fix that??

[Bruno Pagani]

Hi,

I would first try to update to 2.0.7 (I seem to remember it fixed exactly this issue), through fwupd (it’s not available through other means). Just install fwupd (it’s available in [community]) and then run:

fwupdmgr get-devices
fwupdmgr get-updates
fwupdmgr update

to check that your ColorHug is correctly detected (as well as potentially other devices), get the update for it and finally update it.

Regards,
Bruno

[Matthias Meulien]

You were right: Switching to 2.0.7 firmware, fixed the problem.

By the way, very nice Gnome integration! Good job! Thanks a lot.

On Wed, Jan 3, 2018 at 2:59 PM, Bruno Pagani <bruno.n...@gmail.com> wrote:

Hi,

--

Matthias Meulien
Software Engineer

www.delair.aero