UCM-iMX8M-Mini: Yocto Linux: Known Issues

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On-board WiFi module LWB5+ not supported
  • WiFi connectivity via the on-board interface, equipped with the module Sterling™-LWB5+ is inoperable
Affected kernel versions :
6.6.3


On-board WiFi module does not wake up correctly from deep sleep mode
  • WiFi module stops working after the sleep-wake cycle, such as the following:
rtcwake -drtc1 -mmem -s5
Affected kernel versions :
All
Workaround :
  1. Once the device wakes up, re-bind the WiFi module
echo 30b40000.mmc > /sys/class/mmc_host/mmc1/device/driver/unbind; echo 30b40000.mmc > /sys/class/mmc_host/mmc1/device/driver/bind


On-board WiFi module loses connection on 5GHz band
  • In some cases the on-board WiFi module might drop connection on 5GHz band. The functionality recovers after a reboot.
Affected kernel versions :
5.10.35


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