On 2020-01-28 19:36, Michael Whapples wrote:
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
Sounds familiar.
On the Odroids HC2 i got i never do a reboot.
If i need to reboot i do a power off and then pull the power cable and put it
back again since this is the only safe way to make sure network works well.
Has been like this for a long time.
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