Hello all,
I am having difficulty detecting wireless networks on my Linux system:
Code:
>> iwlist wlo1 scan
wlo1 No scan results
Unfortunately, this has come to the point where I am willing to throw whatever I can at the problem! Please let me know if you have any suggestions at all about how to fix it. I wish that I could reinstall the OS from CD, but (1) GRUB boot manager and BIOS are inaccessible and (2) the OS download is blocked by a firewall at my only wired access point.
Potentially relevant information, together with my attempts to resolve the issue:
Code:
>> sudo apt-get update
>> sudo apt-get upgrade
Code:
>> nmcli dev
DEVICE TYPE STATE CONNECTION
enxe8802ee78a2e ethernet connected Wired connection 1
wlo1 wifi disconnected --
eno1 ethernet unavailable --
lo loopback unmanaged --
(The commented lines below resulted from a failed attempt to resolve this.)
Code:
>> cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
# Wireless
#auto wlo1
#iface wlo1 inet dhcp
Code:
>> rfkill list all
0: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
Code:
>> sudo lshw -C network
*-network
description: Ethernet interface
product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eno1
version: 0a
serial: 98:e7:f4:58:73:21
size: 10Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8107e-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:128 ioport:4000(size=256) memory:b1104000-b1104fff memory:b1100000-b1103fff
*-network
description: Wireless interface
product: RTL8723BE PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlo1
version: 00
serial: 94:e9:79:67:d8:c1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8723be driverversion=4.8.0-22-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:19 ioport:3000(size=256) memory:b1000000-b1003fff
*-network
description: Ethernet interface
physical id: 3
logical name: enxe8802ee78a2e
serial: e8:80:2e:e7:8a:2e
size: 100Mbit/s
capacity: 100Mbit/s
capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=asix driverversion=22-Dec-2011 duplex=full firmware=ASIX AX88772 USB 2.0 Ethernet ip=170.212.109.235 link=yes multicast=yes port=MII speed=100Mbit/s
Code:
>> ifconfig
eno1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 98:e7:f4:58:73:21 txqueuelen 1000 (Ethernet)
RX packets 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
enxe8802ee78a2e: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 170.212.109.235 netmask 255.255.255.0 broadcast 170.212.109.255
inet6 fe80::f05c:3c83:cd9:4b0a prefixlen 64 scopeid 0x20<link>
ether e8:80:2e:e7:8a:2e txqueuelen 1000 (Ethernet)
RX packets 924452 bytes 1049492466 (1.0 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 505956 bytes 40947200 (40.9 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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 txqueuelen 1 (Local Loopback)
RX packets 6326 bytes 779852 (779.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6326 bytes 779852 (779.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlo1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 94:e9:79:67:d8:c1 txqueuelen 1000 (Ethernet)
RX packets 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
Code:
>> iwconfig
wlo1 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
enxe8802ee78a2e no wireless extensions.
eno1 no wireless extensions.
lo no wireless extensions.
Code:
>> sudo ifconfig wlo1 down
>> sudo ifconfig wlo1 up
>> sudo modprobe -rv rtl8723be && sudo modprobe -v rtl8723be
rmmod rtl8723be
rmmod rtl_pci
rmmod rtlwifi
rmmod mac80211
rmmod cfg80211
rmmod rtl8723_common
rmmod btcoexist
insmod /lib/modules/4.8.0-22-generic/kernel/net/wireless/cfg80211.ko
insmod /lib/modules/4.8.0-22-generic/kernel/net/mac80211/mac80211.ko
insmod /lib/modules/4.8.0-22-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtlwifi.ko
insmod /lib/modules/4.8.0-22-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl_pci.ko
insmod /lib/modules/4.8.0-22-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723com/rtl8723-common.ko
insmod /lib/modules/4.8.0-22-generic/kernel/drivers/net/wireless/realtek/rtlwifi/btcoexist/btcoexist.ko
insmod /lib/modules/4.8.0-22-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723be/rtl8723be.ko
Code:
>> lsmod|grep -i wifi
rtlwifi 77824 2 rtl_pci,rtl8723be
mac80211 757760 3 rtl_pci,rtlwifi,rtl8723be
cfg80211 581632 2 mac80211,rtlwifi
Code:
SYSTEM SPECIFICATIONS
------------------------------------------
Kubuntu 16.10
KDE Plasma Version 5.7.5
KDE Frameworks Version: 5.26.0
Qt Version: 5.6.1
Kernel Version: 4.8.0-22-generic
OS Type: 64-bit
