Re: WiFi interface disappeared

[Jim <kd1yv oneyv org>]

Dan

Thanks for replying.  As I mentioned the WiFi on the same box runs fine 
from Ubuntu or from Windows.

Here are the lspci and lsusb

Jim$lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor 
Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core 
Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series 
Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset 
Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset 
Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset 
Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset 
Family PCI Express Root Port 2 (rev b4)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset 
Family PCI Express Root Port 3 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset 
Family PCI Express Root Port 4 (rev b4)
00:1c.7 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset 
Family PCI Express Root Port 8 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset 
Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC 
Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset 
Family 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family 
SMBus Controller (rev 04)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
03:00.0 System peripheral: Ricoh Co Ltd PCIe SDXC/MMC Host Controller 
(rev 07)
08:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 
802.11b/g/n WiFi Adapter (rev 01)
Jim$
Jim$lsusb
Bus 002 Device 003: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1)
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 5986:03b3 Acer, Inc
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Jim$


In addition, here is lsmod
Jim$lsmod
Module                  Size  Used by
i915                  958755  3
i2c_algo_bit           13250  1 i915
drm_kms_helper         93604  1 i915
crct10dif_pclmul       14307  0
crc32_pclmul           13133  0
crc32c_intel           22094  0
drm                   300858  5 i915,drm_kms_helper
ghash_clmulni_intel    13230  0
r8169                  71639  0
mii                    13527  1 r8169
video                  19825  1 i915
sunrpc                279333  1
Jim$



On 09/14/2015 03:17 PM, Dan Williams wrote:
> On Mon, 2015-09-14 at 14:10 -0400, JimR wrote:
> > Fedora Core 21, KDE spin, all patches up to date.
> >
> > Have run for many months using WiFi almost exclusively. Started using OpenVPN a couple of months ago with a 
> > commercial VPN provider. (Not sure if that matters). That has worked fine.
> >
> > Got notification from Apper that some packages needed updating, including kernel. Performed the update from 
> > the Apper UI.  I don't know if Networkmanager was in the list.
> >
> > After reboot, WiFi no longer works, in fact, the whole WiFi interface has disappeared from ifconfig and from 
> > the NetworkServices UI. I plugged in an ethernet cable, and it works fine. Machine is triple-boot, FC21, Win7 
> > and Ubuntu LTS 14.04. WiFi works fine in Win and Ubu.
> >
> > I tried re-adding the interface, wlp8s0 using the Connection Editor. Seemed happy, but it still won't start 
> > nor  list in ifconfig
> If the device isn't listed in ifconfig the the kernel cannot see it, and
> thus NetworkManager can't see it.  It seems like there is either a
> hardware problem with your wifi device, or the kernel has been updated
> and no longer recognizes the wifi device.  What is the output of 'lsusb'
> and 'lspci' when those commands are run in a terminal on your machine?
>
> Dan
>
> > I found this in the messages log around the time of the failure, but googling this does not produce any 
> > meaningful help:
> >
> > Sep 12 23:16:04 KD1YV1 NetworkManager[733]: <info> (wlp8s0): device state change: activated -> deactivating 
> > (reason 'removed') [100 110 36]
> > Sep 12 23:16:04 KD1YV1 NetworkManager[733]: <info> NetworkManager state is now CONNECTED_LOCAL
> > Sep 12 23:16:04 KD1YV1 NetworkManager[733]: <info> (wlp8s0): device state change: deactivating -> unmanaged 
> > (reason 'removed') [110 10 36]
> > Sep 12 23:16:04 KD1YV1 NetworkManager[733]: <info> (wlp8s0): deactivating device (reason 'removed') [36]
> >
> > Help!
> > JimR
> > _______________________________________________ networkmanager-list mailing list networkmanager-list gnome 
> > org https://mail.gnome.org/mailman/listinfo/networkmanager-list