Quote from: taltom on February 20, 2018, 07:59:30 PM

Has anyone seen this when booting up? GPU 0 is a EVGA 1080 FTW I've changed the "target" to different numbers and they reflect in the error message.

GPU 0, Mon Feb 19 08:26:10 EST 2018 - Adjusting fan from: 35 to: 40 Temp: 61

ERROR: Error assigning value 40 to attribute 'GPUTargetFanSpeed'
(m1-desktop:0[fan:0]) as specified in assignment
'[fan:0]/GPUTargetFanSpeed=40' (Unknown Error).

See this post: https://bitcointalk.org/index.php?topic=1854250.msg29174770#msg29174770

Its the same issue found throughout the blog here about the Xorg not seeing your card.
Follow Papampi's instructions on the coolbits command.