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#1 2017-09-05 09:25:08

BlueRave
Member
Registered: 2017-08-09
Posts: 4

[SOLVED] All network interface disappeared

Hello,

Am posting there since I'm still deeply a newbie.

I came back from vacation and run

yaourt -Syu

All went fine, I think. On the next boot on (the next day), Xorg was enable to start (No screens found). As I was looking for a solution I realized that my wifi configuration was also broken.

Knowing that

lspci -k

02:00.0 Network controller: QUalcomm Atheros QCA6174 802.11ac Wirless Network Adapter (rev 32) 
Subsystem: Bigfoot Networks, Inc. Device 1535
ifconfig -a

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
    inet 127.0.0.1 netmask 255.0.0.0
    inet6 ::1 prefixlen 128 scopeid 0x10<host>
    loop twqquelen 1000 (Local Loopback)
    RX packet 0 bytes 0 (0.0 B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 0 bytes 0 (0.0 B)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

I'm usually using network-manager

nmcli r

WIFI-HW     WIFI     WWAN-HW  WWAN
activated  activated  activated  activated

And last but not list

ls /proc/sys/net/ipv4/conf

all default lo

Important fact my laptop (DELL XPS) doesn't have any ethernet port (just a lightening port and I don't have any adapter). I managed everything (included install) with wirless connexion.

That's it. As you can see, all my network interfaces are gone. I haven't any clues about what exactly happened and I have no idea what to do now...

Last edited by BlueRave (2017-09-07 13:35:43)

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#2 2017-09-05 09:31:26

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,427

Re: [SOLVED] All network interface disappeared

Output of

pacman -Q linux
uname -a

Hint: the versions reported should be matching.

You likely didn't have your boot partition mounted while doing the update and the new kernel has now replaced the modules of the old one, and the old kernel doesn't find them anymore. Mount your /boot partition and reinstall the linux package. If you can't mount /boot on your running kernel use a chroot from a live system.

Before mounting /boot clear out the /boot directory which now should contain the new kernel but not be the proper partition.

It is also advisable to simply have the /boot partition mounted at all times, it will save you these headaches in the future.

Last edited by V1del (2017-09-05 09:33:01)

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#3 2017-09-07 13:33:32

BlueRave
Member
Registered: 2017-08-09
Posts: 4

Re: [SOLVED] All network interface disappeared

Wow that was so accurate!! Thank you so much! It worked nicely!

So as to mount /boot, I had indeed to use a chroot from a livesystem. Makes me able to took advantage of genfstab command to built my /etc/fstab which I obviously missed to configure during my fresh install...

Thanks again V1del!

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