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Connected to WiFi. Works for 5 mins or so, then fail.

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I am using Asus USB-N13 wifi adapter. Ubuntu recognizes it and allows me to connect to my wifi. I can surf the web for about 5 minutes or so and then i lose internet connection, but Ubuntu still shows I am connected to the Wifi with a strong signal. I have to unplug and plug back in the adapter to get back online, all for about another 5 minutes or so before it happens again. I have been all over the web trying to find an answer to this problem. Please help. Thanks.

[ubuntu] Lenovo g40-45 Ubuntu 14.04 Wifi not working

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Hello,
I got a Laptop "Lenovo g40 win8" i installed Ubuntu but my Wifi doesnt working.

Code:

lspci -nnk
00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:1566]
    Subsystem: Lenovo Device [17aa:3801]
00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon APU E2-4000 with R2 Graphics] [1002:9853]
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: radeon
00:01.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:9840]
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: snd_hda_intel
00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:156b]
00:02.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1 [1022:1439]
    Kernel driver in use: pcieport
00:02.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1 [1022:1439]
    Kernel driver in use: pcieport
00:08.0 Encryption controller [1080]: Advanced Micro Devices, Inc. [AMD] Device [1022:1537]
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: AMD Cryptographic Coprocessor
00:10.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller [1022:7814] (rev 11)
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: xhci_hcd
00:11.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] [1022:7801]
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: ahci
00:12.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller [1022:7808] (rev 39)
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: ehci-pci
00:13.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller [1022:7808] (rev 39)
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: ehci-pci
00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:780b] (rev 42)
    Subsystem: Lenovo Device [17aa:3801]
00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller [1022:780d] (rev 02)
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: snd_hda_intel
00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:780e] (rev 11)
    Subsystem: Lenovo Device [17aa:3801]
00:14.7 SD Host controller [0805]: Advanced Micro Devices, Inc. [AMD] FCH SD Flash Controller [1022:7813] (rev 01)
    Subsystem: Lenovo Device [17aa:3801]
    Kernel driver in use: sdhci-pci
00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:1580]
00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:1581]
00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:1582]
00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:1583]
    Kernel driver in use: k10temp
00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:1584]
00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:1585]
01:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:0041] (rev 20)
    Subsystem: Lenovo Device [17aa:3545]
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
    Subsystem: Lenovo Device [17aa:3812]
    Kernel driver in use: r8169

Code:

lsusb
Bus 002 Device 004: ID 0cf3:e300 Atheros Communications, Inc.
Bus 002 Device 003: ID 5986:0652 Acer, Inc
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 0951:1625 Kingston Technology DataTraveler 101 II
Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 005: ID 0951:1665 Kingston Technology
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


Code:

iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.


Code:

sudo modprobe -v ath9k
insmod /lib/modules/3.16.0-30-generic/kernel/net/wireless/cfg80211.ko
insmod /lib/modules/3.16.0-30-generic/kernel/net/mac80211/mac80211.ko
insmod /lib/modules/3.16.0-30-generic/kernel/drivers/net/wireless/ath/ath.ko
insmod /lib/modules/3.16.0-30-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko
insmod /lib/modules/3.16.0-30-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko
insmod /lib/modules/3.16.0-30-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko

Code:

rfkill list all
0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: yes
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no

Networkmanager doesnt show my Wireless

Code:

########## wireless info START ##########

Report from: 13 Jun 2015 09:34 PET -0500

Booted last: 13 Jun 2015 04:06 PET -0500

Script from: 21 May 2015 09:10 UTC +0000

##### release ###########################

Distributor ID:    Ubuntu
Description:    Ubuntu 14.04.2 LTS
Release:    14.04
Codename:    trusty

##### kernel ############################

Linux 3.16.0-30-generic #40~14.04.1-Ubuntu SMP Thu Jan 15 17:45:15 UTC 2015 i686 athlon i686 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=7

##### desktop ###########################

Ubuntu

##### lspci #############################

01:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:0041] (rev 20)
    Subsystem: Lenovo Device [17aa:3545]

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
    Subsystem: Lenovo Device [17aa:3812]
    Kernel driver in use: r8169

##### lsusb #############################

Bus 002 Device 004: ID 0cf3:e300 Atheros Communications, Inc.
Bus 002 Device 003: ID 5986:0652 Acer, Inc
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA card info ##################

##### rfkill ############################

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: yes
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no

##### lsmod #############################

ideapad_laptop        17926  0
sparse_keymap          13708  1 ideapad_laptop

##### interfaces ########################

auto lo
iface lo inet loopback

##### ifconfig ##########################

eth0      Link encap:Ethernet  HWaddr <MAC 'eth0' [IF]> 
          inet addr:192.168.1.33  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::6af7:28ff:fe88:718d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8027 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8913 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:7108539 (7.1 MB)  TX bytes:956640 (956.6 KB)

##### iwconfig ##########################

lo        no wireless extensions.

eth0      no wireless extensions.

##### route #############################

Kernel IP routing table
Destination    Gateway        Genmask        Flags Metric Ref    Use Iface
0.0.0.0        192.168.1.1    0.0.0.0        UG    0      0        0 eth0
192.168.1.0    0.0.0.0        255.255.255.0  U    1      0        0 eth0

##### resolv.conf #######################

nameserver 127.0.1.1
search domain.name

##### network managers ##################

Installed:

    NetworkManager

Running:

root      676    1  0 09:06 ?        00:00:00 NetworkManager

##### NetworkManager info ###############

NetworkManager Tool

State: connected (global)

- Device: eth0  [Wired connection 1] -------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:            connected
  Default:          yes
  HW Address:        <MAC 'eth0' [IF]>

  Capabilities:
    Carrier Detect:  yes
    Speed:          100 Mb/s

  Wired Properties
    Carrier:        on

  IPv4 Settings:
    Address:        192.168.1.33
    Prefix:          24 (255.255.255.0)
    Gateway:        192.168.1.1

    DNS:            200.48.225.130
    DNS:            200.48.225.146

##### NetworkManager.state ##############

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true

##### NetworkManager.conf ###############

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

##### NetworkManager profiles ###########

##### iw reg get ########################

Region: America/Lima (based on set time zone)

country 00:
    (2402 - 2472 @ 40), (6, 20)
    (2457 - 2482 @ 40), (6, 20), PASSIVE-SCAN
    (2474 - 2494 @ 20), (6, 20), NO-OFDM, PASSIVE-SCAN
    (5170 - 5250 @ 160), (6, 20), PASSIVE-SCAN
    (5250 - 5330 @ 160), (6, 20), DFS, PASSIVE-SCAN
    (5490 - 5730 @ 160), (6, 20), DFS, PASSIVE-SCAN

##### iwlist channels ###################

lo        no frequency information.

eth0      no frequency information.

##### iwlist scan #######################

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

##### module infos ######################

##### module parameters #################

##### /etc/modules ######################

lp

##### modprobe options ##################

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off

[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211

[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en

[/etc/modprobe.d/modesetting.conf]
options cirrus modeset=1
options mgag200 modeset=1

##### rc.local ##########################

exit 0

##### pm-utils ##########################

##### udev rules ########################

[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

##### dmesg #############################

########## wireless info END ############


Code:

echo ath9k | sudo tee -a /etc/modules
ath9k

Reboot without Ethernet

Code:

lsmod
Module                  Size  Used by
nls_iso8859_1          12617  1
bnep                  18895  2
rfcomm                58045  8
snd_hda_codec_conexant    14400  1
snd_hda_codec_generic    62873  1 snd_hda_codec_conexant
snd_hda_codec_hdmi    46396  1
kvm                  388518  0
crc32_pclmul          12987  0
aesni_intel            18170  0
aes_i586              16995  1 aesni_intel
xts                    12749  1 aesni_intel
lrw                    13057  1 aesni_intel
gf128mul              14503  2 lrw,xts
ablk_helper            13357  1 aesni_intel
cryptd                15578  1 ablk_helper
parport_pc            32021  0
ppdev                  17391  0
ath9k                122222  0
ath9k_common          24878  1 ath9k
joydev                17113  0
ath9k_hw              430710  2 ath9k_common,ath9k
snd_hda_intel          29285  5
serio_raw              13251  0
snd_hda_controller    29944  1 snd_hda_intel
uvcvideo              71465  0
videobuf2_vmalloc      13048  1 uvcvideo
snd_hda_codec        120371  5 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
snd_hwdep              13272  1 snd_hda_codec
videobuf2_memops      13170  1 videobuf2_vmalloc
rtsx_usb_ms            18249  0
videobuf2_core        48344  1 uvcvideo
k10temp                12976  0
v4l2_common            15132  1 videobuf2_core
memstick              16174  1 rtsx_usb_ms
snd_pcm                87194  4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller
ath                    24182  3 ath9k_common,ath9k,ath9k_hw
videodev              131265  3 uvcvideo,v4l2_common,videobuf2_core
btusb                  27649  0
media                  20899  2 uvcvideo,videodev
mac80211              559049  1 ath9k
snd_seq_midi          13324  0
snd_seq_midi_event    14475  1 snd_seq_midi
snd_rawmidi            25722  1 snd_seq_midi
snd_seq                56592  2 snd_seq_midi_event,snd_seq_midi
bluetooth            391253  22 bnep,btusb,rfcomm
snd_seq_device        14137  3 snd_seq,snd_rawmidi,snd_seq_midi
radeon              1308261  3
snd_timer              28648  2 snd_pcm,snd_seq
6lowpan_iphc          18262  1 bluetooth
i2c_piix4              17734  0
cfg80211              418811  4 ath,ath9k_common,ath9k,mac80211
ttm                    76999  1 radeon
drm_kms_helper        55007  1 radeon
snd                    66670  21 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
drm                  255469  6 ttm,drm_kms_helper,radeon
i2c_algo_bit          13197  1 radeon
shpchp                32143  0
soundcore              14599  2 snd,snd_hda_codec
ccp                    31128  0
ideapad_laptop        17926  0
sparse_keymap          13708  1 ideapad_laptop
mac_hid                13059  0
video                  19475  0
lp                    13299  0
parport                40836  3 lp,ppdev,parport_pc
rtsx_usb_sdmmc        27163  0
rtsx_usb              20227  2 rtsx_usb_sdmmc,rtsx_usb_ms
uas                    22631  0
usb_storage            52721  2 uas
psmouse                91236  0
sdhci_pci              18640  0
r8169                  61579  0
ahci                  25622  2
mii                    13654  1 r8169
sdhci                  38345  1 sdhci_pci
libahci                26970  1 ahci



ifconfig -a
eth0      Link encap:Ethernet  HWaddr 68:f7:28:88:71:8d 
          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)

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:159 errors:0 dropped:0 overruns:0 frame:0
          TX packets:159 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:11263 (11.2 KB)  TX bytes:11263 (11.2 KB)




 iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.



rfkill list
0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no



iwlist chan
lo        no frequency information.

eth0      no frequency information.



sudo iwlist scan
[sudo] password for ubuntu:
lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.



dmesg | grep ath
[    1.729551] Loaded X.509 cert 'Magrathea: Glacier signing key: 3c66a93eb5d1a5681166b681a517938d081e4dc7'
[  16.971721] audit: type=1400 audit(1434227100.721:20): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/telepathy/mission-control-5" pid=814 comm="apparmor_parser"

still not working

[ubuntu] Can't connect to internal server and router

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I've got a strange problem, and need help in troubleshooting.

My internal network consists of a couple of PC's with dual boot Ubuntu/Windows, a network printer and a router which also works as a DHCP server.

One of the PC's is showing a bit strange behaviour.


  • Connection to internet without any problems, I can open webpages in my browser, read e-mails and so on
  • Running Ubuntu, and trying to open the configuration page of the router is not working (timeout)
  • The same applies when trying to open the network printer configuration page (nothing happens, timeout)
  • I can ping both the router and the network printer from this PC
  • Doing the same operations from other PC's works without any problems
  • It also works when running Windows on that particular PC
  • I've compared the routing tables between this PC and another one, and they seem to be identical


Any hints what could be the cause of the problem?

[ubuntu] No internet connection (cable unplugged)

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Hello, yesterday I decided to install fresh version of Ubuntu 14.04 (I was using Windows 7 before). Everything was fine until i tried to connect to the internet. Ethernet cable is plugged in (worked in windows 7) and orange led is blinking. I read on forums that the problem was my ethernet controller driver; I'm using

Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 02)
Subsystem: Gigabyte Technology Co., Ltd Motherboard
Flags: bus master, fast devsel, latency 0, IRQ 44
I/O ports at c000 [size=256]
Memory at e8010000 (64-bit, prefetchable) [size=4K]
Memory at e8000000 (64-bit, prefetchable) [size=64K]
[virtual] Expansion ROM at e7000000 [disabled] [size=64K]
Capabilities: <access denied>
Kernel driver in use: r8168

Kernel driver at fresh install was r8169. I have already done everything i found on forums about this topic. I downloaded r8168 driver from realtek webpage, installed it, blacklisted r8169 driver etc. However, in the network settings, there is still "cable unplugged" message. Please help.

How does a NIC know when to wake up a PC/Ubuntu?

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I would like to find out how I can query a network cards properties/capabilities.
The reason why is, that I would like to find out how a NIC wakes up a computer. No, I don't want to know about Wake-on Lan with a magic packet. For instance, I have a Synology NAS and it goes to sleep. When I turn on a PC or a TV it wakes up and is ready to serve. How does it do that? I had found the answer to my question of property query of the NIC, lost it and can't find it anymore. I have never found an answer as to how the NIC does it. I would like to set up a server, one of the obstacles is waking it up from sleep.

Ubuntu 14.04 LTS, Intel N-7260 not connecting to home wifi

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Hi all,

Sorry to bother you, but I've been spending hours trying to fix this, and it seems I won't be able to do this on my own so...

I'm using Ubuntu 14.04LTS (updating to a non LTS is sadly not an option) on my CLEVO laptop, with an Intel N-7260 wifi device. It usually works well, though I sometimes have to turn wifi off and on again to connect to some networks.

But today, I tried everything I could without any luck. My laptop won't connect to my home wifi ("Freebox-5ECBD0"), while both my desktop computer (running windows 7) and my smartphone (Android 4.1) connected without a hiccup...
This happened to me last year, roughly same time of the year, and I remember spending more than a week, trying everything I found to make it work (and somehow it worked at one point, though I can't tell what fixed it). I'm telling this in case you find anything strange/non-default in the attached wireless-info file (and if that might be the cause of today's problem, please tell me how to "get back" to default...)

Thanks again for your time and kind help.

[Edit]: after founding this article https://erickranich.wordpress.com/20...0-sous-ubuntu/ , I tried
sudo /sbin/iwconfig wlan0 power off
and tried connecting again... and it worked! I don't know how long it'll work nor exactly what I did though, so any explanation/help is still welcome! [/Edit]
Attached Files

Wifi connected but no internet access

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Ubuntu 15.04 on HP r007tx

Ralink wireless card
cannot ping any ip address or webpages

Please help

[ubuntu] Unexplained wireless speed/reception drop

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Hi,

I have recently been having problems with wireless internet on my laptop (Toshiba Satellite with Ubuntu 14.04 LTS; wireless card is QCA9565 / AR9565 Wireless Network Adapter). It used to have great reception but now it has either 1 bar or none at all when more than 2 metres from the modem. It has just become really slow with no explanation! Other laptops/PC's/tablets work fine in the same places. The laptop is dual boot and in the Windows partition (Windows 8.1) it seems to work slightly better, but only just.

I have tried looking up other threads on this topic but they seem to have just confused me further.

Thanks :)

[ubuntu] L2tp with psk not supported :(

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For my work I would like to have vpn l2tp with psk connection as a client.
It is impossible to configure it with network manager.
There was some solution in a past:
https://launchpad.net/~seriy-pr/+arc...k-manager-l2tp
I contacted author (Sergey Prokhorov) and he answered me that he ended to work on it because he need it not for everyday purpose ;).

I tried Fedora22 and there is also l2tp with psk via network manager not working.

Thank you for any advice what to do to get L2tp with PSK to work.

openas and network interfaces

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I have installed openas on top of 14.04 lts and I have issue where interfaces gets overwritten every five minutes. I wonder if anyone know what could overwrite my settings ?

Cannot Get DHCP With University Wifi

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Hello,

I have been trying for sometime to run Ubuntu on a Lenovo ideapad and have been unsuccessful with setting up the wifi.
I have tried both using the internal wireless card (which I suspect is not compatible with the university network as it does not work in windows either) and using a realtek RTL8188.

The computer will connect to my home router just fine, but not the the university wifi. If I scan for networks though I can see the university wifi both through the internal card and the realtech. The university wifi has no security. Any suggestions?

[all variants] I need to buy a new wi-fi router, suggestions please

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Firstly I hope that this post is in the correct place, feel free to move it if it is not.
I have an elderly Edimax wi-fi router and it is very slow transferring files on my home network. I only just found this out as I've just set up a Raspberry Pi2 as a media centre with Openelec and Kodi. File transfer is at about 200kB/sec :(
From my research I would like something running DD-WRT but it has to have wi-fi because I do not have the space for two boxes. I have looked at Buffalo products but would like some advice.
I probably don't need the top of the range, this is just a home network and I'm the only one using it.
I don't need super strength wi-fi, I'm only 10 ft. from the router. My walls are made of stone and are 2 ft. or more thick, there is no possibility of the signal going outside of this room. OK you got me, I live in a dungeon :)
My main concern is for security rather than the ability for it to do all sorts of tricks.

All suggestions are most welcome.

Other Info:
My ISP did not supply the router, I bought it.
I'm on an ADSL connection 8128kbps down, 448kbps up, through the telephone socket.

Launch x11vnc through SSH with lightdm

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I'm running a Kodibuntu server, and I sometimes want to connect with VNC.
For security, I tunnel x11vnc through SSH, like this:
Code:

ssh -L 5900:localhost:5900 hostname 'x11vnc'
Then on my laptop, I connect to localhost with RealVNC Viewer. This works fine in the Kodi UI, but I need to access the login screen to start a normal desktop environment to use a web browser, etc. At the login screen, x11vnc fails to start because it can't find an X display. So I add the following line to .x11vncrc:
Code:

auth /var/run/lightdm/root/:0
Now it works when I run x11vnc as root. But I can't use sudo over SSH, and it seems like a bad idea for security too. What can I do?

RDP assistance

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Hello everyone,

I have been having another problem with RDP. Concering the VPN, I am installing teamviewer and using this until I can figure out a method for VPN between my two computers.

Now, I have multiple ubuntu machines in my work. All of which are connected to each other via network switch (they all have multiple nics. One is for the switch, the other is for the internet).

I successfully setup the ip addresses for the switch because I am able to ping all of them from each computer. For this issue, I am only going to be focusing on two.

I have two ubuntu computers computer A is attempting to rdp to computer B. Using vino-preferences, I have setup computer B to allow remote desktop with a password. I have installed xrdp and vnc4server (trying different methods). On computer A, I am running remmina. WIth remmina, I am able to connect to computer B via rdp protocol. I know that this is a sercuity concern and that I should do SSH tunneling; however, they are all on the same switch and thus, I figured it was unneccessary.

I come to the login screen and I see the different options such as sesman-any, rdp-any, and sesman-VNC, and etc. However, I am unable to control the desktop with any of them. The application will "connect" and hang at a black screen, display a successful connection and crash, or will hang at TCP connected.

I have been editting the xrdp.ini on computer B for hours and I am unable to determine come up with a solution. Any help will be much appreciated!

Please find below my current configuration for the xrdp.ini:

[globals]
bitmap_cache=yes
bitmap_compression=yes
port=3389
crypt_level=low
channel_code=1
max_bpp=24
#black=000000
#grey=d6d3ce
#dark_grey=808080
#blue=08246b
#dark_blue=08246b
#white=ffffff
#red=ff0000
#green=00ff00
#background=626c72

[xrdp1]
name=sesman-Xvnc
lib=libvnc.so
username=
password=
ip=127.0.0.1
port=3350

[xrdp2]
name=console
lib=libvnc.so
ip=127.0.0.1
port=5900
username=
password=

[xrdp3]
name=vnc-any
lib=libvnc.so
ip=ask
port=ask5900
username=
password=

[xrdp4]
name=sesman-any
lib=libvnc.so
ip=192.168.0.2
port=3350
username=
password=

[xrdp5]
name=rdp-any
lib=librdp.so
ip=192.168.0.2
port=ask3389

[xrdp6]
name=freerdp-any
lib=libxrdpfreerdp1.so
ip=ask
port=ask3389
username=
password=

[xrdp7]
name=sesman-X11rdp
lib=libxup.so
username=
password=
ip=127.0.0.1
port=3350
xserverbpp=24

Couldn't connect Internet after update

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I couldn't connect Internet after update. So I have to turn back older generic (xxxxxx.52) to access the Internet. I updated three time (up to xxxxxx.55) but the problem is the same. I couldn't any similarly issue on the Internet. Please help me!
Many thanks!

Strange connection issue!

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Hi all,
I'm new to Ubuntu and I'm having some issues connecting to the wifi. It's a weird problem because I can connect to the ethernet or wifi at school, but I cannot connect to either at any other location. I guess this probably means it's a laptop issue or some setting somewhere that I can't find. Does anyone have any suggestions? Help would be much appreciated!
Thank you!

How to change name of Wlan interface?

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Hello,

Probably an easy fix but I haven't been able to find it. All my systems call their wireless interface wlan0 EXCEPT for one which calls it wlan2. Where is that interface name defined? It messes with my CDO to have one system different from the others for no particular reason.

Thanks, Jon

Disabling certain wi-fi channels

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I want to setup multiple wireless routers to use the same access point. Unfortunately, some of the routers I have give me trouble w/a couple of Ubuntu installations. These problems would be acceptable if I could just prevent the Ubuntu client systems from using the channels that the problem routers use. But I don't know how to do that.

[ubuntu] How to open port

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Hello . I have a torrent tracker and i need to open port 5500 for seeders ... How i can do this ?
And after how i can check if is open ?

Networking in Ubuntu Vagrant box

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Hey there,


I am currently trying to set up an Ubuntu 14.04 Vagrant box using Virtual Box 4.3.28 that receives VRPN coordinates[1] from an outside server running Windows 7. The box's network is bridged to the host's network card that has both the host and the external server. The box can be ping the server, but the server can not ping the box. The box does not receive any data via VRPN. The host system can ping the guest and guest can ping the host. The box receives data via VRPN from a sample VRPN server on the host. I was able to ping the host and a Windows 8 guest VM from the external server.


The Vagrant file looks like this:


Code:

# -*- mode: ruby -*-
# vi: set ft=ruby :


Vagrant.configure(2) do |config|


        # To avoid an error, we add an hostname
        # Get more info here: http://blog.doismellburning.co.uk/2013/01/19/upgrading-puppet-in-vagrant-boxes/
        config.vm.hostname = "3d-sketch.hpi.de"


        # Enable port forwarding (this does not work since the server is not run locally
        # RepetierServer
        # config.vm.network "forwarded_port", host: 3344, guest: 3344
        # vrpn
        # config.vm.network "forwarded_port", host: 3883, guest: 3883


        # box's crossbar server
        config.vm.network "forwarded_port", host: 8080, guest: 8080


        # bridge for the magic...
        config.vm.network "public_network", bridge: "wlan0"


        config.vm.synced_folder ".", "/vagrant", disabled: true
        config.vm.synced_folder "../3d_sketch", "/vagrant/3d_sketch", create: true


        # for defining a name
        config.vm.define "3d_sketch_server" do |s|
        end


        config.vm.provider "virtualbox" do |vb|
                # https://serverfault.com/questions/453185/vagrant-virtualbox-dns-10-0-2-3-not-working?rq=1
                # https://serverfault.com/questions/495914/vagrant-slow-internet-connection-in-guest
               
                # vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
                # comment the following line if there are too many DNS lookups
                # vb.customize ["modifyvm", :id, "--natdnsproxy1", "on"]
               
                # overkill to get all network devices into Promiscuous Mode
                vb.customize ["modifyvm", :id, "--nicpromisc0", "allow-all"]
                vb.customize ["modifyvm", :id, "--nicpromisc1", "allow-all"]
                vb.customize ["modifyvm", :id, "--nicpromisc2", "allow-all"]
                vb.customize ["modifyvm", :id, "--nicpromisc3", "allow-all"]
  end


end

Any ideas? Please find my network info file attached (generated with wireless-info).


Regards
Max

[1] VRPN is a protocol for transmitting information of physical devices (position, orientation, etc.) via the network. This section may be interesting: https://github.com/vrpn/vrpn/wiki/Tr...-cant-send-udp
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