My Wifi adapter disappeared

asked 2015-10-13 06:53:36 -0500

updated 2016-01-17 21:05:56 -0500

mether gravatar image

I did a bit of search in google to find out the reasons. I found out that it is rngd.service. Error message

 systemctl -l status rngd
● rngd.service - Hardware RNG Entropy Gatherer Daemon
   Loaded: loaded (/usr/lib/systemd/system/rngd.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Tue 2015-10-13 13:09:24 CEST; 40min ago
  Process: 703 ExecStart=/sbin/rngd -f (code=exited, status=127)
 Main PID: 703 (code=exited, status=127)

Oct 13 13:09:24 localhost.localdomain systemd[1]: Started Hardware RNG Entropy Gatherer Daemon.
Oct 13 13:09:24 localhost.localdomain systemd[1]: Starting Hardware RNG Entropy Gatherer Daemon...
Oct 13 13:09:24 localhost.localdomain systemd[1]: rngd.service: main process exited, code=exited, status=127/n/a
Oct 13 13:09:24 localhost.localdomain systemd[1]: Unit rngd.service entered failed state.
Oct 13 13:09:24 localhost.localdomain systemd[1]: rngd.service failed.
Oct 13 13:09:25 localhost.localdomain rngd[703]: /sbin/rngd: error while loading shared libraries: cannot restore segment prot after reloc: Permission denied

I think rngd.service may be responsible because google said so. My fedora version is 22 and wifi adapter is gone. I can't see anylonger through iwconfig command. Desktop is lxde

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So... why do you think that service is responsible for your Wi-Fi device's disappearance? The error you can observe in that section of the system journal is likely the result of SELinux, for what it's worth, but I'm more interested in why you think this has anything to do with your Wi-Fi adapter.

bitwiseoperator gravatar imagebitwiseoperator ( 2015-10-13 14:24:48 -0500 )edit

It would be very helpful to have details like: what version of Fedora, what desktop environment, what wifi hardware, and if you did anything recently before it disappeared.

resplin gravatar imageresplin ( 2015-10-13 15:28:02 -0500 )edit

rngd did not affect your wifi. It's a random number generator daemon - some CPUs have dedicated functionality for generating randomness, and rngd collects it. Usually it shows as failed because one of those CPUs isn't available; everything is fine when that happens, the system generates entropy some other way.

randomuser gravatar imagerandomuser ( 2015-10-14 08:24:24 -0500 )edit