I have installed fedora 31 on my Odroid XU4 following instructions at
https://blog.pcfe.net/hugo/posts/2019-01-27-fedora-29-on-odroid-hc2/.
Mostly it seems to work, at least for what I want (IE. as a headless
server). There is one problem which I am having.
The built in network controller works most of the time. However I have
found if I do a reboot using shutdown -r now then the network card is
not found by linux (eg. output of lsusb does not show it and it is not
in output from ifconfig).
If I should shutdown using shutdown -h now and then power on by using
the power button, the network controller is detected and networking
works normally.
Some google searches suggest that people with the same model of realtek
network card, but in an external form, have had problems with their
network card because of power management features in Linux. If I check
/sys/bus/usb/devices/6-1/power/control then the value is "on" which I
believe means no power management/suspend. So seems like this may not be
the issue.
Does anyone have any suggestions on what may be wrong? Might this be a
kernel bug and if so where would be best to report it?
Thanks in advance for any help.
Michael
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