[SOLVED] Wifi went down after update and reboot.

Absentinsomniac · 2012-07-01 23:16:18

I can't be entirely sure that it was the update that did it, but I'm somewhat confident it was the culprit. After I upgraded and rebooted, my wifi stopped working. (I didn't reboot for about 15 hours after the update, however, and IIRC it was working up until the reboot.)

Anyway, here's what I got:

 
$ ifconfig wlan0 up
   wlan0: ERROR while getting interface flags: No such device

$ iwlist wlan0 scan
   wlan0     Interface doesn't support scanning.

$ lspci | grep -i net
01:00.0 Ethernet controller: Atheros Communications Inc. AR242x / AR542x Wireless Network Adapter (PCI-Express) (rev 01)
02:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)

$ sudo lshw -C network
Password: 
  *-network UNCLAIMED     
       description: Ethernet controller
       product: AR242x / AR542x Wireless Network Adapter (PCI-Express)
       vendor: Atheros Communications Inc.
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list
       configuration: latency=0
       resources: memory:91300000-9130ffff
  *-network
       description: Ethernet interface
       product: RTL-8139/8139C/8139C+
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 1
       bus info: pci@0000:02:01.0
       logical name: eth0
       version: 10
       serial: 00:1e:ec:85:2e:19
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=full ip=192.168.1.36 latency=64 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=100Mbit/s
       resources: irq:16 ioport:1000(size=256) memory:91200000-912000ff

$ sudo modprobe ath9k
ERROR: could not insert 'ath9k': Unknown symbol in module, or unknown parameter (see dmesg)

When I run dmesg I get a bunch of stuff resembling this:

 [ 4052.466066] ath9k: Unknown symbol rate_control_send_low (err 0)
[ 4052.466110] ath9k: Unknown symbol ieee80211_unregister_hw (err 0)
[ 4052.466193] ath9k: Unknown symbol ieee80211_beacon_get_tim (err 0)
[ 4052.466393] ath9k: Unknown symbol ieee80211_queue_work (err 0)

I vaguely remember a broadcom chip being in this machine, but I've set up like 5 different arch systems since I set up this laptop and I'm probably mistaken. I'm out of ideas. Anybody got any suggestions?

Last edited by Absentinsomniac (2012-07-02 18:34:33)

Absentinsomniac · 2012-07-02 01:55:29

Huzah! It's fixed.

All i had to do:

$ sudo pacman -Syu linux
:: Synchronizing package databases...
 core is up to date
 extra is up to date
 community is up to date
warning: linux-3.4.4-2 is up to date -- reinstalling
:: Starting full system upgrade...
resolving dependencies...
looking for inter-conflicts...

Targets (1): linux-3.4.4-2

Total Installed Size:   56.71 MiB
Net Upgrade Size:       0.00 MiB

Proceed with installation? [Y/n] Y
(1/1) checking package integrity                   [######################] 100%
(1/1) loading package files                        [######################] 100%
(1/1) checking for file conflicts                  [######################] 100%
(1/1) checking available disk space                [######################] 100%
(1/1) upgrading linux                              [######################] 100%
>>> Updating module dependencies. Please wait ...
>>> Generating initial ramdisk, using mkinitcpio.  Please wait...
==> Building image from preset: 'default'
  -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
==> Starting build: 3.4.4-2-ARCH
  -> Running build hook: [base]
  -> Running build hook: [udev]
  -> Running build hook: [autodetect]
  -> Running build hook: [pata]
  -> Running build hook: [scsi]
  -> Running build hook: [sata]
  -> Running build hook: [keymap]
  -> Running build hook: [encrypt]
  -> Running build hook: [filesystems]
  -> Running build hook: [usbinput]
==> Generating module dependencies
==> Creating gzip initcpio image: /boot/initramfs-linux.img
==> Image generation successful
==> Building image from preset: 'fallback'
  -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux-fallback.img -S autodetect
==> Starting build: 3.4.4-2-ARCH
  -> Running build hook: [base]
  -> Running build hook: [udev]
  -> Running build hook: [pata]
  -> Running build hook: [scsi]
  -> Running build hook: [sata]
  -> Running build hook: [keymap]
  -> Running build hook: [encrypt]
  -> Running build hook: [filesystems]
  -> Running build hook: [usbinput]
==> Generating module dependencies
==> Creating gzip initcpio image: /boot/initramfs-linux-fallback.img
==> Image generation successful
$ sudo modprobe ath5k
$

So just run "sudo pacman -Syu linux"

then

"sudo modprobe athk5"

bernarcher · 2012-07-02 06:12:04

Absentinsomniac, please mark this thread solved then. See the Forum Rules how to do so.

Arch Linux

#1 2012-07-01 23:16:18

[SOLVED] Wifi went down after update and reboot.

#2 2012-07-02 01:55:29

Re: [SOLVED] Wifi went down after update and reboot.

#3 2012-07-02 06:12:04

Re: [SOLVED] Wifi went down after update and reboot.

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