im using a rasberry pi with a powerd hub (i have try also on the raspberry without hub)

pi@raspberrypi:~/mining/newpac/cgminer $ ./cgminer -n
 [2021-01-17 17:35:14.105] USB all: found 4 devices - listing known devices
.USB dev 0: Bus 1 Device 13 ID: 0403:6015
  ** dev 0: Failed to open, err -3                   
 [2021-01-17 17:35:14.105] 1 known USB devices                   
pi@raspberrypi:~/mining/newpac/cgminer $ 



and this is when i start  cgminer

cgminer version 4.11.1 - Started: [2021-01-17 17:47:35.578]
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 (5s):0.000 (1m):0.000 (5m):0.000 (15m):0.000 (avg):0.000h/s
 A:65536  R:0  HW:0  WU:0.0/m
 Connected to sha256.mining-dutch.nl diff 2.05K with stratum as user Davy4260.wo
 Block: 65ce0fe5...  Diff:112G  Started: [17:47:35.002]  Best share: 0
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 SB management [P]ool management ettings [D]isplay options [Q]uit
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 [2021-01-17 17:47:40.796] See README file included for help
 [2021-01-17 17:47:40.796] GekkoScience detect (1:13) failed to initialise (inco
rrect device?), resetting
 [2021-01-17 17:47:41.282] Pool 0 difficulty changed to 2048
 [2021-01-17 17:47:46.123] USB init, open device failed, err -3, you don't have
privilege to access - GSH device 1:13
 [2021-01-17 17:47:46.123] See README file included for help
 [2021-01-17 17:47:46.124] GekkoScience detect (1:13) failed to initialise (inco
rrect device?), resetting
 [2021-01-17 17:47:51.457] USB init, open device failed, err -3, you don't have
privilege to access - GSH device 1:13
 [2021-01-17 17:47:51.457] See README file included for help
 [2021-01-17 17:47:51.457] GekkoScience detect (1:13) failed to initialise (inco
rrect device?), resetting