Why Ubuntu disconnects from Wi-Fi when turning on hotspot and how to solve this problem??
8159
I know how to create a hotspot when connected to a wired network, but when I am using internet from a WiFi connection, this disconnects the wireless connection the moment I activate the hotspot.  In Windows I can use , which enables me to share the internet connection from the same wireless adapter as I am creating an access point on. As you can read on the :     Access Point mode allows you to create a hotspot using the same Wi-Fi card that you are using to access the Internet.   How do I do this on Ubuntu?
49794
Have read quite a lot of questions about this problem, but everyone just explain how to solve it (which do not work for me) and none what I have found actually explain what the reason for it is. Personally I get this problem with my home network All The Time! Literally about 20 times a day and every time it happens it can last up to 3 months if I am unlucky. My ISP say that it is a problem with my router, I have 2 routers now. One ASUS and one Linksys, the ASUS have default firmware and the Linksys have dd-wrt. I run 2 arch linux PCs and one Android smart phone. All devices get the same problem when it occurs. At the moment I use the Asus one because the Linksys never recovered while ASUS have internet access for about 5 min before loosing connection for about 10 min. Have borrowed a friends router and it is the same problem with that one. I can with all of them setup a LAN without any problem. Is this a problem on my end or over at my ISP? I would really appreciate an answer for this because when I call them they say that I am doing something wrong and are responsible for it, but I honestly think they are to blame. When the internet goes down compleatly I can still share the wifi from my phone and it works, so do not believe I have miss configured the wifi on my PC's.
63388
I installed Ubuntu yesterday, so I'm trying to get used to it.  I'm really close to my router, but my wifi signal gets too low. Sometimes I'm in Facebook or Youtube and the signal is high, almost full, but it is usually in one or two bars, and sometimes none.  I can use Internet normally, I can watch videos and stuff, but the problem is when I try to update something or Ubuntu is downloading stuff, the downloads get stuck or get cancelled telling me that I should check my connection.  How can I fix this? I should be getting a really good signal, I'm really close to my router, my phone has full signal, and a notebook with Windows 7 has full signal here too.  Sorry my bad English and I hope you can help me.  $ lsusb Bus 009 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 002: ID 0bda:8179 Realtek Semiconductor Corp.  Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 002: ID 0458:003a KYE Systems Corp. (Mouse Systems) NetScroll+ Mini Traveler / Genius NetScroll 120 Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
14832
I'm testing Ubuntu 18.04 with my current desktopand everything works correctly except for the Wi-Fi adapter. I'm using a TP-LINK TL-WN8200ND version 2.  As requested , my wireless-info output is at .  I've tested Mint 19, Kubuntu and KDE neon, with similar results.  Is there an official driver that works out of the box?
89965
I have the latest version of Ubuntu, but it will not recognize my wireless adapter (Netgear WNA3100).  How do I get it to search for (any) USB device and how do I get it to use it to gain access to the internet?
4482
I am running Ubuntu Gnome 16.04, and this morning the Network Manager suddenly stopped showing any WiFi networks at all. One moment I was connected to a local wireless network, and the next I was not. Even worse, although the system recognises the wifi adapter, no wifi networks appear to show up.  "enp0s29u1u4c4i2" is an iPhone I am using as an access point to post this question, but usually there are only three devices (eno1, lo, wlp2s0). I am attaching the outputs of ifconfig, iwconfig and iwlist scan, all ran as sudo.  ifconfig  eno1      Link encap:Ethernet  HWaddr 24:b6:fd:fc:9b:06             UP BROADCAST MULTICAST  MTU:1500  Metric:1           RX packets:0 errors:0 dropped:0 overruns:0 frame:0           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1000            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)           Interrupt:20 Memory:e1c00000-e1c20000   enp0s29u1u4c4i2 Link encap:Ethernet  HWaddr da:cf:9c:c6:b7:a0             inet addr:172.20.10.2  Bcast:172.20.10.15  Mask:255.255.255.240           inet6 addr: fe80::6eaa:eff8:b247:91b4/64 Scope:Link           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1           RX packets:6422 errors:0 dropped:0 overruns:0 frame:0           TX packets:5985 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1000            RX bytes:4361666 (4.3 MB)  TX bytes:964896 (964.8 KB)  lo        Link encap:Local Loopback             inet addr:127.0.0.1  Mask:255.0.0.0           inet6 addr: ::1/128 Scope:Host           UP LOOPBACK RUNNING  MTU:65536  Metric:1           RX packets:2653 errors:0 dropped:0 overruns:0 frame:0           TX packets:2653 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1            RX bytes:209742 (209.7 KB)  TX bytes:209742 (209.7 KB)  wlp2s0    Link encap:Ethernet  HWaddr e0:06:e6:02:40:ae             UP BROADCAST MULTICAST  MTU:1500  Metric:1           RX packets:0 errors:0 dropped:0 overruns:0 frame:7           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1000            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)           Interrupt:17   iwconfig  lo        no wireless extensions.  enp0s29u1u4c4i2  no wireless extensions.  eno1      no wireless extensions.  wlp2s0    IEEE 802.11abg  ESSID:off/any             Mode:Managed  Access Point: Not-Associated   Tx-Power=200 dBm              Retry short limit:7   RTS thr:off   Fragment thr:off           Encryption key:off           Power Management:off   iwlist scan  lo        Interface doesn't support scanning.  enp0s29u1u4c4i2  Interface doesn't support scanning.  eno1      Interface doesn't support scanning.  wlp2s0    No scan results   According to lspci, my network controller is a "Broadcom Corporation BCM43228 802.11a/b/g/n". I had some issues getting the OS to recognise it right after installing 16.04, but I solved them long ago by switching the default drivers. What can I do to start seeing wifi networks again?   Thanks!  Gonzalo  EDIT  As per Pilot6's suggestion, I am adding the output of lspci -knn | grep Net -A2  00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network Connection [8086:1502] (rev 04)     DeviceName:  Onboard LAN     Subsystem: Dell 82579LM Gigabit Network Connection [1028:04a9]     Kernel driver in use: e1000e     Kernel modules: e1000e -- 02:00.0 Network controller [0280]: Broadcom Corporation BCM43228 802.11a/b/g/n [14e4:4359]     Subsystem: Dell Wireless 1530 Half-size Mini PCIe Card [1028:0011]     Kernel driver in use: wl   Also, here's the result of running the  mentioned by @eldergeek:
122019
It worked, the it dropped, then it worked, now it won't connect to wireless. Brand new Asus laptop that came with ubuntu is connected. The problem seems to be with Ubuntu. It keeps asking for authorization codes for my neighbors signals as well as my signal which the asus is connected to.
102438
I recently upgraded to Ubuntu 13.04 from Ubuntu 12.10. However, since then although my wireless network is detected, I cannot connect to it.  Ubuntu keeps on trying to reconnect with the network but is not successful. Same machine on Windows 8 I am able to connect to the same wireless network.  Also, Ethernet is working fine as I am able to connect to the same network through Ethernet on Ubuntu.  My lspci -nn output is   12:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01) 13:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.                RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)   I already tried the solution in this post  but it not solving my problem. The situation is the same.  Please help me. I do not want to switch to using Windows again.
47271
Actually yesterday I've upgraded from Ubuntu 16.04 to 17.04 and I got a problem that, if connect LAN cable it does not showing anything and  remains disconnected. But i can connect with WiFi. I don't know what's the problem. Actually its showing "device not managed" under the "Ethernet Network" and both were disabled. I've searched for the solution, but did not found yet.
16581
Is it possibe to change the channel my phone broadcasts its Wi-Fi hotspot on?   Right now it's using the same channel as my neighbour (6). My router is reporting several unused slots.
118885
I have an old acer laptop (Aspire 5315-2077.) I'm using it to mainly browse the internet with while I'm using my more powerful system for gaming. I connect to the internet via wifi on the ubuntu system. I also have a wired LAN that does not connect to the internet. If plug the Ethernet cable into the LAN port on the laptop the wifi suddenly drops connection to the internet. I unplug it and I get internet. I suspect that ubuntu assumes that the wired network is faster for internet and assigns a higher priority to it. In my case, however, I need to keep priority on wifi for internet. Windows 7 allows me to assign a value to what's called an "Interface metric" no each of my connections. How can I do the same with ubuntu 13.04's connections? I have been looking for a solution for awhile and have not found it. I have found it is possible but, the person just asked if it was possible in their question and all the answers were basically yes without further explanation as to how. I am quite a novice with linux distros so, I don't have much more info about my configuration. Thank you for your help.
109006
I have an  and is running the latest Ubuntu 11.10. The hardware works fine with Ubuntu with one exception: The device has a hardware switch for turning the wifi on and off. Every time the wi-fi is disabled through the hardware switch, I am unable to bring it on again. The message on the networking popup would be device not ready.  What I am looking for is a way to disable the hardware switch altogether so that when users accidentally press the button, the wifi would not be disabled.   There is no setting to disable the switch in the BIOS.   Hardware info from lspci -nn:  00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GME Express Memory Controller Hub [8086:27ac] (rev 03) 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03) 00:02.1 Display controller [0380]: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller [8086:27a6] (rev 03) 00:1b.0 Audio device [0403]: Intel Corporation N10/ICH 7 Family High Definition Audio Controller [8086:27d8] (rev 01) 00:1c.0 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI Express Port 1 [8086:27d0] (rev 01) 00:1c.1 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI Express Port 2 [8086:27d2] (rev 01) 00:1d.0 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 [8086:27c8] (rev 01) 00:1d.7 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller [8086:27cc] (rev 01) 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev e1) 00:1f.0 ISA bridge [0601]: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge [8086:27b9] (rev 01) 00:1f.2 IDE interface [0101]: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller [8086:27c4] (rev 01) 02:06.0 CardBus bridge [0607]: ENE Technology Inc CB1410 Cardbus Controller [1524:1410] (rev 01) 02:08.0 Ethernet controller [0200]: Intel Corporation 82562ET/EZ/GT/GZ - PRO/100 VE (LOM) Ethernet Controller Mobile [8086:1068] (rev 01) 10:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4222] (rev 02)   The output from lsmod | grep iwl:  iwl3945                73329  0  iwl_legacy             71499  1 iwl3945 mac80211              272785  2 iwl3945,iwl_legacy cfg80211              172392  3 iwl3945,iwl_legacy,mac80211
102870
This may seem like a duplicate, but many solutions have been unsuccessfully tried. Currently I have no internet, WIFI or Ethernet. Sometimes: "no wifi adapter found".  The device is HP dm4, dual boot with Windows 7.    Here is the  The issue started 3 weeks ago as no GUI after 16.04 LTS to 18.04.01 upgrade.  At that time, I was able to use the terminal to connect to the Internet and run "fixes" in   Then mysteriously, the GUI ran after restarting several times.  But since then, I am unable to connect to the Internet in the terminal or GUI.    There is a chatroom  about my issues.  sudo nmcli c up &lt;saved WIFI connection&gt;   only appears to connect.   sudo nmcli d wifi list   shows strong signal strength, but ping to google and nyt fails.   The phone I use as a hotspot shows a successful connection.    In the GUI Network Tools show the phone/hotspot recently used minutes ago, the Available Networks list shows the phone/hotspot as available with a check mark, but the "connect" button is grayed out and unfunctional.    REGDOMAIN=00 and attempts to change this has failed as others describe. I have a similar set up to the one described by cipricus in  and the situation described in
110584
I have a Toshiba z830 with ubuntu 12.04. I could use without problems the DSL connection (I have no router, only a modem) at home until a couple of days ago:   It stopped to work when while connected with the DSL connection via CiscoVPN (to my workplace), I had to leave the laptop unattended for a while and I guess the laptop tried to go to suspend. When I came back there were many messages on a black screen (sorry, I cannot attach an image because of my low reputation) and the laptop was not responding. I had to reset the it.   After rebooting it, the internet connection didn't work as did before (no browsing, no ssh, no skype, etc) although it says it is connected. I only can browse, etc when I connect to CiscoVPN to the same place where I was connected when it crashed.  When I am physically where I connected via VPN (at work) I can use the wireless, which I am not able to use now anymore since the incident described above.  Some additional information:  martillu@ubuntu:~$ cat /etc/resolv.conf   domain km.icrr.u-tokyo.ac.jp   nameserver 10.240.12.134   nameserver 10.240.12.135    martillu@ubuntu:~$ route -n   Kernel IP routing table   Destination Gateway Genmask Flags Metric Ref Use Iface   0.0.0.0 61.127.116.199 0.0.0.0 UG 0 0 0 ppp0   61.127.116.199 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0   169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 ppp0    martillu@ubuntu:~$ ifconfig   eth0 Link encap:Ethernet HWaddr e8:e0:b7:2f:bc:5a   inet6 addr: fe80::eae0:b7ff:fe2f:bc5a/64 Scope:Link   UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1   RX packets:17620 errors:0 dropped:1 overruns:0 frame:0   TX packets:13168 errors:0 dropped:0 overruns:0 carrier:0   collisions:0 txqueuelen:1000   RX bytes:19452232 (19.4 MB) TX bytes:2568218 (2.5 MB)   Interrupt:20 Memory:c0700000-c0720000    lo Link encap:Local Loopback   inet addr:127.0.0.1 Mask:255.0.0.0   inet6 addr: ::1/128 Scope:Host   UP LOOPBACK RUNNING MTU:16436 Metric:1   RX packets:134 errors:0 dropped:0 overruns:0 frame:0   TX packets:134 errors:0 dropped:0 overruns:0 carrier:0   collisions:0 txqueuelen:0   RX bytes:36316 (36.3 KB) TX bytes:36316 (36.3 KB)    ppp0 Link encapoint-to-Point Protocol   inet addr:219.167.252.226 P-t-P:61.127.116.199 Mask:255.255.255.255   UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1454 Metric:1   RX packets:17608 errors:0 dropped:0 overruns:0 frame:0   TX packets:13129 errors:0 dropped:0 overruns:0 carrier:0   collisions:0 txqueuelen:3   RX bytes:18993590 (18.9 MB) TX bytes:2221195 (2.2 MB)    wlan0 Link encap:Ethernet HWaddr 9c:b7:0d:d9:21:f3   UP BROADCAST MULTICAST MTU:1500 Metric:1   RX packets:0 errors:0 dropped:0 overruns:0 frame:0   TX packets:0 errors:0 dropped:0 overruns:0 carrier:0   collisions:0 txqueuelen:1000   RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)    I think that: domain km.icrr.u-tokyo.ac.jp in the resolv.conf may be suspicious, since if I am not connected via CiscoVPN I do not know why it should appear "km.icrr.u-tokyo.ac.jp" (this is where I connect via VPN).
108978
I discovered several issues with wifi connection after installing 16.04 LTS.   First, wifi doesn't reconnect normally after sleep or hibernation. Sometimes the network icon turns into a "up and down arrows"(I don't know what it is for) after waking up but is still connected. Sometimes network is simply lost and it doesn't display any network in the list so there's simply no way to use wifi at all.  I first tried restarting network manager by running sudo service network-manager restart. It worked but was not a permanent resolution.   Then according to another thread, I added SUSPEND_MODULES="iwlwifi" to /etc/pm/config.d/config.  After doing this, the reconnect issue seems to be fixed (can automatically reconnect and icon doesn't change any more). However,  I find the wifi connection gets lost randomly (about every 30 minutes) even when the computer is running and the network icon remains the connected state when connection is lost.  Another issue after adding the code is, when I put my computer to sleep, the screen will turn off for a second but then turns back on for around 5 seconds(during which the system will cut off wifi connection). And then the computer will go to sleep after this unusual "two-phase" process.  Wireless cards info below  *-network                       description: Wireless interface        product: RTL8723BE PCIe Wireless Network Adapter        vendor: Realtek Semiconductor Co., Ltd.        physical id: 0        bus info: pci@0000:02:00.0        logical name: wlp2s0        version: 00        serial: b0:c0:90:5c:1c:d5        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless        configuration: broadcast=yes driver=rtl8723be driverversion=4.4.0-21-generic firmware=N/A ip=192.168.0.8 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn        resources: irq:16 ioport:d000(size=256) memory:df200000-df203fff  00:00.0 Host bridge: Intel Corporation Sky Lake Host Bridge/DRAM Registers (rev 07) 00:01.0 PCI bridge: Intel Corporation Sky Lake PCIe Controller (x16) (rev 07) 00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 06) 00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31) 00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31) 00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31) 00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA controller [AHCI mode] (rev 31) 00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1) 00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1) 00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31) 00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31) 00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31) 00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31) 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V (rev 31) 01:00.0 VGA compatible controller: NVIDIA Corporation GK208 [GeForce GT 730] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GK208 HDMI/DP Audio Controller (rev a1) 02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter 03:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller (rev 01)   05/01/2016 Update I don't know what happened but the issue gets worse now. Wifi connection gets lost about every 5 minutes and I have to reconnect or restart network-manager.
77530
If I try to set up a hotspot in GNOME, I get the following message:  If you have a connection to the Internet other than wireless, you can use it to share your internet connection with others. Switching on the wireless hotspot will disconnect you from &lt;network name&gt;. It is not possible to access the internet through your wireless while the hotspot is active.  What are the technical reasons why I can't set up an Hotspot and be connected to the Internet at the same time?
95881
I have tried using ap-hotspot to create a wifi-hotspot but it gives me some problem every time I use it . I just want to ask is there any other software  package that create a wifi-hotspot othen than ap-hotspot ?