I agree that is the only reliable way to ensure networking, not good if
you need to restart the odroid remotely though.
Does anyone have hints on how I could find information to help with
debugging? Would be good to get it fixed.
On 03/02/2020 15:39, Torbjorn Jansson wrote:
> On 2020-01-28 19:36, Michael Whapples wrote:
>> I have installed fedora 31 on my Odroid XU4 following instructions at
>> 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.
> 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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