Wifi adapter

Thu Apr 13 20:20:44 MST 2017

Seeing the passthrough comment reminded me I have a weird issue with my usb
wlan nic doing something odd, might affect you doing much the same.  I
forget the flavor of nic, but once I plug it into linux, the drivers would
kick in and start locking the device.  My goal usually with it is to tend
to a windoze instance that also runs some wireless spectrum analyzer tools,
but I end up having to rmmod the driver prior to giving it to virtualbox or
windows just sees it as a broken driver state with the angry (!).

Might be something like that why it doesn't always come and go?

-mb

On Thu, Apr 13, 2017 at 3:04 PM, Jerry Snitselaar <dev at snitselaar.org>
wrote:

>
> Stephen M @ 2017-04-13 04:45 GMT:
>
> I went and picked one of these up at Fry's since they were $10.
> Using usb passthrough from my fedora host to the ubuntu vm, I
> can get the device to come up with either the r8188eu driver that
> comes with Ubuntu, or the 8188eu driver that tp-link provides.
>
> One thing I had to do when rebooting the vm was remove and reinsert
> the device, but that could just be an issue with using it through
> usb passthrough.
>
> This is with 14.04.3 running 3.19.0-25-generic
>
> Perhaps if you want to use the tp-link provided one, maybe blacklist
> the Ubuntu driver.
>
> snits
>
>
>
> jsnitsel at ubuntu14-32:~$ lsmod | grep 8188
> jsnitsel at ubuntu14-32:~$ lsusb
> Bus 001 Device 004: ID 0bda:8179 Realtek Semiconductor Corp.
> Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> jsnitsel at ubuntu14-32:~$ find /lib/modules -type f -name 8188eu.ko
> jsnitsel at ubuntu14-32:~$ cd Downloads/Driver/
> jsnitsel at ubuntu14-32:~/Downloads/Driver$ ls
> 8188eu.ko     8188eu.o  core         include   modules.order   platform
>  wpa_0_8.conf
> 8188eu.mod.c  bin       hal          Kconfig   Module.symvers  runwpa
> 8188eu.mod.o  clean     ifcfg-wlan0  Makefile  os_dep          wlan0dhcp
> jsnitsel at ubuntu14-32:~/Downloads/Driver$ sudo cp 8188eu.ko
> /lib/modules/`uname -r`/extra/
> [sudo] password for jsnitsel:
> jsnitsel at ubuntu14-32:~/Downloads/Driver$ sudo depmod -a
> jsnitsel at ubuntu14-32:~/Downloads/Driver$
> jsnitsel at ubuntu14-32:~/Downloads/Driver$ sudo modprobe 8188eu
> jsnitsel at ubuntu14-32:~/Downloads/Driver$ ip a show
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
> default
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>     inet 127.0.0.1/8 scope host lo
>        valid_lft forever preferred_lft forever
>     inet6 ::1/128 scope host
>        valid_lft forever preferred_lft forever
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> state UP group default qlen 1000
>     link/ether 52:54:00:e0:39:64 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::5054:ff:fee0:3964/64 scope link
>        valid_lft forever preferred_lft forever
> 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
> group default qlen 1000
>     link/ether d4:6e:0e:19:87:a3 brd ff:ff:ff:ff:ff:ff
>     inet 192.168.1.163/24 brd 192.168.1.255 scope global wlan0
>        valid_lft forever preferred_lft forever
>     inet6 fe80::d66e:eff:fe19:87a3/64 scope link
>        valid_lft forever preferred_lft forever
> jsnitsel at ubuntu14-32:~/Downloads/Driver$ cd /sys/class/net/wlan0/device
> jsnitsel at ubuntu14-32:/sys/class/net/wlan0/device$ cat uevent
> DEVTYPE=usb_interface
> DRIVER=rtl8188eu
> PRODUCT=bda/8179/0
> TYPE=0/0/0
> INTERFACE=255/255/255
> MODALIAS=usb:v0BDAp8179d0000dc00dsc00dp00icFFiscFFipFFin00
> jsnitsel at ubuntu14-32:/sys/class/net/wlan0/device$ lsmod | grep 8188
> 8188eu                933888  0
> cfg80211              450560  1 8188eu
> jsnitsel at ubuntu14-32:/sys/class/net/wlan0/device$ ping -c 5 google.com
> PING google.com (216.58.217.206) 56(84) bytes of data.
> 64 bytes from lax17s05-in-f14.1e100.net (216.58.217.206): icmp_seq=1
> ttl=55 time=23.6 ms
> 64 bytes from lax17s05-in-f14.1e100.net (216.58.217.206): icmp_seq=2
> ttl=55 time=29.9 ms
> 64 bytes from lax17s05-in-f14.1e100.net (216.58.217.206): icmp_seq=3
> ttl=55 time=28.3 ms
> 64 bytes from lax17s05-in-f14.1e100.net (216.58.217.206): icmp_seq=4
> ttl=55 time=22.0 ms
> 64 bytes from lax17s05-in-f14.1e100.net (216.58.217.206): icmp_seq=5
> ttl=55 time=22.6 ms
>
> --- google.com ping statistics ---
> 5 packets transmitted, 5 received, 0% packet loss, time 4005ms
> rtt min/avg/max/mdev = 22.064/25.314/29.975/3.209 ms
> jsnitsel at ubuntu14-32:/sys/class/net/wlan0/device$ uname -r
> 3.19.0-25-generic
> jsnitsel at ubuntu14-32:/sys/class/net/wlan0/device$ find /lib/modules -type
> f -name 8188eu.ko
> /lib/modules/3.19.0-25-generic/extra/8188eu.ko
> jsnitsel at ubuntu14-32:~$ cd /etc/modprobe.d/
> jsnitsel at ubuntu14-32:/etc/modprobe.d$ cat blacklist-r8188eu.conf
> blacklist r8188eu
>
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