I2C is not working properly with RPi3/4 Fedora IoT

Hello,

I’ve been in trouble making I2C working properly with Fedora IoT and Raspberry 3 and 4.
After get i2c-tools and libi2c installed, an I2C interface is created : i2c-2 for rpi3 and i2c-11 and i2c-12 for rpi4. However when I try to run this command : i2cdetect -y , I always get some strange results like if there are already some addresses in use. When I connect my I2C communcating devices, it does just nothing.

[root@fedora ~]# i2cdetect -y 11
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: 08 09 0a 0b 0c 0d 0e 0f
10: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30: – – – – – – – – 38 39 3a 3b 3c 3d 3e 3f
40: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50: – – – – – – – – – – – – – – – –
60: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70: 70 71 72 73 74 75 76 77

Kernel modules are already loaded (i2c-dev and i2c_bcm2835)

Somes ideas ?

Thanks