Comment 13 for bug 1584457

upgraded from 17.04 to 17.10 64-bit desktop. ASUS Transformer T300 CHI-FL005H. kernel 4.13.0-32-generic and gnome-settings-daemon 3.26.2-0ubuntu0.1

syslog and journalctl spammed exactly as described - gdm3 and gsd-backlight-helper --set-brightness

I can confirm "systemctl stop iio-sensor-proxy" causes these messages to stop, but less frequent errors from org.gnome.Shell.desktop are logged repeatedly, e.g.

Error.checkin_request.cc(211) failed to get checking response. Fetcher failed. Retrying.

Followed by various other org.gnome.Shell.desktop messages. I can provide a log if they might be useful, but I suspect they are triggered by killing the iio-sensor-proxy and so are probably not very relevant to the original bug.