Quantcast
Channel: Ubuntu Forums - Networking & Wireless
Viewing all 23300 articles
Browse latest View live
↧

NFS autofs freezes client after a while

April 20, 2020, 1:59 pm
$
0
0
Hello,


I use NFS to connect to my server. When accessing from client 1, the client gets slower file access after a while and the sometimes it freezes completely. After a reboot everything seems fine again. On client 2 everything is fine.


Server: Debian GNU/Linux 9.12 (stretch)
in /etc/exports
Code:
/mnt/md0/chris  10.0.0.0/24(rw,sync,no_subtree_check)

Client 1: Linux Mint 19.3 Tricia (Ubuntu Bionic)
Client 2: Linux Mint 19 Tara (Ubuntu Bionic)
both use autofs to connect to the NFS share
in /etc/auto.master
Code:
/net    -hosts    --timeout=60

Code:
root@client1:~# cat /var/log/syslog | grep -i automount
Apr 19 21:29:21 client1 kernel: [    4.001453] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
Apr 19 21:29:27 client1 systemd[1]: Starting Automounts filesystems on demand...
Apr 19 21:29:27 client1 systemd[1]: Started Automounts filesystems on demand.

do you have any hint what could be wrong here, or where to look?


Thanks, Chris
↧
Search

Can't find my wireless device on Dell Latitude e6520

April 20, 2020, 2:46 pm
$
0
0
I got this older labtop and installed Ubuntu. During install, the wireless device is detected. I even got it to work once from the install menu.

Once installed, I have no wireless and it doesn't show up in lspci. I figure it is just a matter of installing the right driver/firmware, but I have not had any luck with search engines.

The wireless-info.txt is here:
https://pastebin.com/8uv17fK1
↧
↧

USB dongle recommendations for Ubuntu and Ubuntu-based distros?

April 20, 2020, 6:16 pm
$
0
0
Hi all - this should be an easy one!

I just set up a Linux desktop PC for a family friend who bought it as a second computer and wants to set it up in a room away from his router, so he won't be able to hardwire it via ethernet to his router.

Does anybody have suggestions for a cheap USB WiFi dongle that works plug-and-play with Linux (preferably Ubuntu or Linux Mint?, from Amazon or elsewhere (and would preferably also work plug-and-play with Windows10 as well as his other computer runs Windows 10 and he may swap their locations in the future)?

All suggestions are welcome, so certainly point out any at all that you are aware of, but one caveat though - he would PREFER one that has a detachable antenna, like this sort of thing:
...reason being is that he mentioned he may move it to the workshop in his heated/wired garage to use there as he works at some point and the antenna that comes with it may not be strong enough to get a signal from the WiFi in his house, so one with a detachable antenna like this would let him buy a better separate antenna to plug in to increase the signal strength.

Thanks for any suggestions! :D
↧

[ubuntu] My intelnetwork adapter connects,but eventually becomes idle after afround 10-15 mins

April 21, 2020, 4:21 am
$
0
0
These are details of my adapter
*-network
description: Wireless interface
product: Wireless 3165
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:16:00.0
logical name: wlp22s0
version: 79
serial: 98:3b:8f:a5:be:5a
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=5.3.0-46-generic firmware=29.1044073957.0 ip=192.168.43.16 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:45 memory:fe900000-fe901fff

whenever i turn on my laptop, it autoconnects the saved network as usual routine in any ubuntu computer.
But after around 15-20 mins , network gets disconnected but shows connected and idle, no response. When i turn off wifi, the wifi adapter is as if it got removed from my pc, there r no traces of it, it dissapears from gui asif no wifi adapter connected.

i tried installing drivers but i am confused what to do, i am using dell inspiron 3565,
description: Notebook
product: Inspiron 15-3565 (078E)
vendor: Dell Inc.
version: 1.10.1
serial: 4TFQ4P2
width: 64 bits
capabilities: smbios-3.0 dmi-3.0 smp vsyscall32
configuration: boot=normal chassis=notebook family=Inspiron sku=078E uuid=44454C4C-5400-1046-8051-B4C04F345032
*-core
description: Motherboard
product: Inspiron 15-3565
vendor: Dell Inc.
physical id: 0
version: A00
serial: .4TFQ4P2.CNWSC008CS00Q7.
slot: Default string
*-firmware
description: BIOS
vendor: Dell Inc.
physical id: 0
version: 1.10.1
date: 09/03/2018
size: 64KiB
capacity: 8128KiB
capabilities: pci pnp upgrade shadowing cdboot bootselect edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int14serial int17printer acpi usb biosbootspecification netboot uefi
*-cache:0
description: L1 cache
physical id: 17
slot: L1 CACHE
size: 160KiB
capacity: 160KiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 18
slot: L2 CACHE
size: 1MiB
capacity: 1MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=2
*-memory
description: System Memory
physical id: 25
slot: System board or motherboard
size: 4GiB
*-bank:0
description: SODIMM DDR4 [empty]
product: A1_PartNum0
vendor: 000000000000
physical id: 0
serial: A1_SerialNum0
slot: DIMM 0
width: 64 bits
*-bank:1
description: SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0.4 ns)
product: HMA851S6CJR6N-UH
vendor: 009C360B0000
physical id: 1
serial: 2D3861E9
slot: DIMM 1
size: 4GiB
width: 64 bits
clock: 2400MHz (0.4ns)
*-cpu
description: CPU
product: AMD A6-9225 RADEON R4, 5 COMPUTE CORES 2C+3G
vendor: Advanced Micro Devices [AMD]
physical id: 2c
bus info: cpu@0
version: AMD A6-9225 RADEON R4, 5 COMPUTE CORES 2C+3G
slot: P0
size: 1761MHz
capacity: 2600MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm perfctr_core perfctr_nb bpext ptsc mwaitx cpb hw_pstate ssbd vmmcall fsgsbase bmi1 avx2 smep bmi2 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov cpufreq
configuration: cores=2 enabledcores=2 threads=2
*-pci:0
description: Host bridge
product: Family 15h (Models 60h-6fh) Processor Root Complex
vendor: Advanced Micro Devices, Inc. [AMD]
physical id: 100
bus info: pci@0000:00:00.0
version: 00
width: 32 bits
clock: 33MHz
*-generic:0 UNCLAIMED
description: IOMMU
product: Family 15h (Models 60h-6fh) I/O Memory Management Unit
vendor: Advanced Micro Devices, Inc. [AMD]
physical id: 0.2
bus info: pci@0000:00:00.2
version: 00
width: 32 bits
clock: 33MHz
capabilities: msi ht cap_list
configuration: latency=0
*-display
description: VGA compatible controller
product: Stoney [Radeon R2/R3/R4/R5 Graphics]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 1
bus info: pci@0000:00:01.0
version: ea
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=amdgpu latency=0
resources: irq:43 memory:e8000000-efffffff memory:f0000000-f07fffff ioport:f000(size=256) memory:feb00000-feb3ffff memory:c0000-dffff

Intel 3165 network adapter usedScreenshot from 2020-04-21 16-43-07.png
Attached Images
↧

[kubuntu] modprobe: FATAL: Module wl not found in directory /lib/modules/5.4.0-24-lowlatency

April 19, 2020, 10:18 pm
$
0
0
I installed kubuntu 20.04 and cannot get my wifi to work. My laptop uses BCM43142 adapter and as usual I installed the bcmwl-kernel-source package.
The install process completed successfully but their was an fatal error(mentioned in the title) in the process. I restarted my system and wifi still didn't worked. I did a manual modprobe wl and it still can't be found. My kernel version is 5.4.0-24-lowlatency(default in kubuntu 20.04). Is the broadcom driver incompatible for this kernel?
↧
↧

[ubuntu] dhcp relay ubuntu 18.04.4 LTS

April 21, 2020, 11:59 am
$
0
0
hi guys,is it possible to configure a dhcp relay sever in ubuntu 18.04.4?if yes how?thanks in advance
↧

[ubuntu] IPv6 Stops communication frequently

April 21, 2020, 2:24 pm
$
0
0
Hi All,


I am seeing one issue related to isc-dhcp-server6. It stops communication to UBR10k cmts even though both are on same IPv6 Local network.

1. Ubuntu 18.04.4 LTS
2. Isc-dhcp-server application
3. IP configuration is give on interfaces with same ethernet has assigned IPv4 and IPv6
4. CMTS ubr10k has Gigabit ethernet interface has both IP on same interface.
5. Both systems are communication are connected through Switch on same network.


I tried to look on Networking Module and NetworkManager. I do not see error log. The solution if this issue when I do up down and UP interface through ifconfig eth0 down/Up. It starts working fine.
I am having only IPv communication where IPv5 working fine and never have any issue.

If anybody have any idea, appreciate it. I tried my best and could not find any clue. I do not have any idea where issue is from CMTS or isc-dhcp-server or Network Module. Please let me know

Thanks.
↧

Fix for flaky Intel N-6205 Wifi (wlp3s0) in 20.04 Focal

April 21, 2020, 7:05 pm
$
0
0
I had been using Ubuntu 18.04 for a long time on a first gen carbon X1 and the wifi was rock stable with it and Windows 10, and also with my initial install of 20.04, but during the last few updates, it would cut in and out and be really slow at times. With 5.4.0-26-generic and this added to a file created in /etc/modprobe.d/iwlwifi-opt.conf:

Code:
options iwlwifi 11n_disable=8 swcrypto=1 bt_coex_active=0 power_save=0 bt_coex_active=0 11n_disable=1
The posts I found these options in varied and suggested I just needed to modprobe -r and modprobe the module, but only a reboot fixed it.

It seems solid now. Oddly, one would think that 11n_disable=8 and 11n_disable=1 both would not be necessary, but if I take either or both out, my connection experience is terrible.
↧
Search

Problems entering the password

April 22, 2020, 7:44 pm
$
0
0
Hi,

I'm new to Ubuntu. Every time I access Ubuntu and I go online I have to re-enter the password. It's very frustrating. Is there a way to get around or to solve this?

Thank you very much for your kind help.

Paolo
↧
↧

Bluetooth inactivity timeout making input devices unusable

April 22, 2020, 7:47 pm
$
0
0
Hi, fellow Linux lovers....

I'm seeing Bluetooth issues after a short time (around 20 - 30 seconds). The mouse (HP X4000B) and Keyboard (Logitech K780) seem to disconnect from the computer, and take 2 -3 seconds to reconnect. The mouse has to be moved around for 2 -3 seconds before the cursor starts following it, and often that means mouse clicks are seen in the wrong place. They keyboard takes the same time to reappear, and often the first character typed is lost. This renders both devices almost useless - you can't see if your password has a character missing, for instance. I've tried all the usual advice, such as modifying the /etc/bluetooth/*.conf files after making sure all drivers, etc, are up to date, restarting the bluetooth service...nothing works. Often, but not always, the Bluetooth manager in KDE strts to show that no device was detected after a while.
I'm a long term Linux user and developer since 2001, and pretty adept at many things Linux, but this is stumping me....any and all suggestions gratefully received

Machine is an 8 core (16 HT) AMD Ryzen box with 16G RAM and a 1T SSD. I dual boot it with windows 10, and Bluetooth works just fine there, so same hardware.

Bluetooth info...

Quote:
hwinfo --bluetooth
07: USB 00.1: 11500 Bluetooth Device
[Created at usb.122]
Unique ID: dOTr.Cq3nDoHoGYB
Parent ID: k4bc.tisqRJYDXEC
SysFS ID: /devices/pci0000:00/0000:00:01.3/0000:02:00.0/usb1/1-1/1-1:1.1
SysFS BusID: 1-1:1.1
Hardware Class: bluetooth
Model: "Intel Bluetooth Device"
Hotplug: USB
Vendor: usb 0x8087 "Intel Corp."
Device: usb 0x0aa7
Revision: "0.01"
Driver: "btusb"
Driver Modules: "btusb"
Speed: 12 Mbps
Module Alias: "usb:v8087p0AA7d0001dcE0dsc01dp01icE0isc01ip01in01 "
Driver Info #0:
Driver Status: btusb is active
Driver Activation Cmd: "modprobe btusb"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #13 (Hub)
Machine info...

Quote:
uname -a
Linux Excession 5.3.0-46-generic #38~18.04.1-Ubuntu SMP Tue Mar 31 04:17:56 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Quote:
more /etc/*release*
::::::::::::::
/etc/lsb-release
::::::::::::::
DISTRIB_ID=neon
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="KDE neon User Edition 5.18"
::::::::::::::
/etc/os-release
::::::::::::::
NAME="KDE neon"
VERSION="5.18"
ID=neon
ID_LIKE="ubuntu debian"
PRETTY_NAME="KDE neon User Edition 5.18"
VARIANT="User Edition"
VERSION_ID="18.04"
HOME_URL="http://neon.kde.org/"
SUPPORT_URL="http://neon.kde.org/"
BUG_REPORT_URL="http://bugs.kde.org/"
LOGO=start-here-kde-neon
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic
Yes...it's KDE Neon.....a superb distro.

hwinfo gives a million pages.


When I run btmon, I see a bunch of messagws when I wake the mouse or keyboard, and they often start with

= bluetoothd: BT socket not connected


and thousands of lines of other info...


Anyway...anyome seeing similar issues, or have debug/fix ideas I missed?

Thanks,

Paul
↧

[SOLVED] Problems with Netplan yaml configure file doesn't enable ethernet device

April 23, 2020, 8:35 am
$
0
0
Hi everybody,

I configured netplan yesterday, and the changes seemed to be persistent across reboots. Yet today, it doens't seem to work.

When running
Code:
sudo lshw -c network
Ethernet device appears disabled.

Here's my yaml configuration file;
Code:
network:

    ethernets:

      enp2sO:

        addresses: []
        dhcp4: true

    version: 2
I generated and applied the yaml configuration file multple times using :
Code:
sudo netplan generate
Code:
sudo netplan apply
I have to run after each reboot :
Code:
sudo dhclient enp2s0
Any ideas as to what should I do ?
↧

Ubuntu 20.04 not using first DNS Server listed, 18.04 however does.

April 23, 2020, 10:03 am
$
0
0
So I have installed 20.04LTS works, but it is not using the first (internal DNS) first, while 18.04LTS does so. hence my overrides for testing are being ignored

Code:
root@ubuntu2004lts:~# nmcli dev show ens33 | grep -i dns
IP4.DNS[1]:                            10.120.25.1
IP4.DNS[2]:                            1.1.1.1
IP4.DNS[3]:                            8.8.4.4
IP4.DNS[4]:                            XXXXXX
IP4.DNS[5]:                            8.8.8.8
IP4.DNS[6]:                            XXXXXX
So the first listed DNS is 10.120.25.1

Now this DNs over-rides a number of addressees from external to internal for testing and other reasons.

Code:
root@ubuntu2004lts:~# nslookup mughi.XXX.XXX 10.120.25.1
Server:        10.120.25.1
Address:        10.120.25.1#53

Non-authoritative answer:
Name:    mughi.XXX.XXX
Address: 10.120.25.62
So 10.120.25.1 returns what I want, but running nslookup returns:
Code:
egandt@ubuntu2004lts:~$ nslookup mughi.XXX.XXX
Server:        127.0.0.53
Address:        127.0.0.53#53

Non-authoritative answer:
Name:  mughi.XXX.XXX
Address: 100.38.XXX.XXX
So the external facing IP, which is wrong. Since 10.120.25.1 is first it should be used and hence resolve an internal IP, but while this works on Windows and Ubuntu 18.04, it is not working on 20.04LTS. I can not say what DNS it is using by default, but it is not the correct aka first one listed.

Why is 127.0.0.53 not using the first DNS set by the adapter? in this case 10.120.25.1, how do I get it to do so?


Code:
Link 2 (ens33)
      Current Scopes: DNS                   
DefaultRoute setting: yes                   
      LLMNR setting: yes                   
MulticastDNS setting: no                   
  DNSOverTLS setting: no                   
      DNSSEC setting: no                   
    DNSSEC supported: no                   
  Current DNS Server: 1.1.1.1               
        DNS Servers: 10.120.25.1           
                      1.1.1.1               
                      8.8.4.4               
                      XXX     
                      8.8.8.8               
                      XXX         
          DNS Domain: ~.                   
                      <removed>
So based on "systemd-resolve --status" it is clear that it did not use the first entry but the second which is incorrect, but why is it ignoring/skipping the first entry?

18.04LTS looks the same but the order is correct with 10.120.25.1 showing up first.
Code:
Link 2 (ens33)
      Current Scopes: DNS
      LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no
        DNS Servers: 10.120.25.1
                      1.1.1.1
                      8.8.4.4
                      xxxx
                      8.8.8.8
                      xxxx
          DNS Domain: ~.
                      <removed>
Correct server is being used.

ERIC
↧

[ubuntu] Who can help to me with network:ports, apache2 \\ wireless tp-link router

April 23, 2020, 11:21 am
$
0
0
I have installed ufw
Typed:
sudo ufw allow 7777

it has not created port.. why ?

after type sudo ufw status

i have tried to check the port

https://www.yougetsignal.com/tools/open-ports/

but can't see open.. how to fix problem and open the port, then do the redirect from static external ip adrees to internal website to unknown users from web ?

I want to open the server with access to unknown people from over the web which go to my static ip -- than redirect to port local ip of machine, Than redirect to apache2 website and return to customers data. to every person clicked my static ip:port---> the full website -- like other simple hostings do
How to do that?
↧
↧

Frequent Wireless Disconnection

April 23, 2020, 1:21 pm
$
0
0
My Wireless Network Adapter seems to detect a wireless access point that is about 100 yards away. The router in my house, the adapter frequently disconnects every 2 minutes and goes into the hidden networks every 30-60 minutes.

The access point at the 100 yard location is at someone else's home and it needs an authentication key to gain access. It seems to be a very stable and consistent detection.

I've talked with the owner of the access point that I have permission to access. They said they haven't made any changes to the router and that they are having no issues with frequent automatic disconnect.

Why can't my adapter detect the closest one with more consistent stability?
↧

Ubuntu 20.04 missing network-manager-sstp package

April 23, 2020, 2:11 pm
$
0
0
Hello

Just install new kubuntu 20.04... from gui it has sstp option.. but when i go to connect it says "Missing VPN Plugin"

No package to install ???

$ sudo apt install network-manager-

network-manager-applet network-manager-iodine-gnome network-manager-pptp-gnome network-manager-config-connectivity-debian network-manager-l2tp network-manager-ssh network-manager-config-connectivity-ubuntu network-manager-l2tp-gnome network-manager-ssh-gnome network-manager-dev network-manager-openconnect network-manager-strongswan network-manager-fortisslvpn network-manager-openconnect-gnome network-manager-vpnc network-manager-fortisslvpn-gnome network-manager-openvpn network-manager-vpnc-gnome network-manager-gnome network-manager-openvpn-gnome
network-manager-iodine network-manager-pptp
↧
Search

Yet Another Issue With Bluetooth

April 23, 2020, 5:33 pm
$
0
0
Hey Flolks,

I've searched this and other forums but I cannot get my bluetooth to work for me. I'm running Ubuntu 18.04 on a Toshiba Satellite C55-A. I've tried uninstalling and reinstalling, starting, restarting and other things I only somewhat understood but can't get it to work.

Here's what I get in my terminal

me:~$ systemctl status bluetooth
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset
Active: inactive (dead)
Condition: start condition failed at Thu 2020-04-23 16:56:17 PDT; 32min ago
└─ ConditionPathIsDirectory=/sys/class/bluetooth was not met
Docs: man:bluetoothd(8)
lines 1-6/6 (END)

As you can see something is running in the background, but I don't know what.

Any ideas?
↧

[server] iperf test is 930Mb/s, but TCP send packet is slow，why？

April 23, 2020, 9:16 pm
$
0
0
I have an HTTP server, and two ports（eth1 and eth2） are LAN connections to a device to get data from the device. The HTTP server is connected to a gigabit switch through the eth0 port, which is connected to multiple PCS that access the HTTP server and request video data.



I deployed an HTTP server on the server (Intel® Atom® Processor C3758), tested 980Mb/s with iperf, and tested 980Mb/s with PC capturing HTTP video data. But when I deployed the HTTP server on an Intel i5 PC, the speed never reached 800Mb/s, and after that it dropped to 600Mb/s, but iperf tested it at 930Mb/s.



The operating system of the deployed server is: Ubuntu server 18.04, memory 4G.
↧
↧

[kubuntu] Fresh 20.04 can't connect to Samba on 19.10

April 24, 2020, 12:27 am
$
0
0
I have a small LAN of 4 PCs and have updated one of them to Kubuntu 20.04 but when I try to connect to any of the existing 19.10 samba servers I get this error: The file or folder smb://XXXXX.local/ does not exist. From the file manager on the 20.04, when I click on the Network button I can see the samba servers listed, including the server on the client machine which is the 20.04 machine. I get the error message even if I attempt to connect to the server on the 20.04 from the 20.04 machine. Changing max protocol from NT1 to off makes no difference. I am able to access Samba on the 19.10 PCs from the 20.04 PC. The 19.10 PCs can still connect to each other as normal. Something has obviously changed in 20.04, does anybody know what it is.
↧

[ubuntu] It is necessary to install ifenslave package on Ubuntu 18.04

April 24, 2020, 2:34 am
$
0
0
Hello everyone,


I installed Ubuntu server 18.04. I configured Bond0 with Vlans during the installation. My question is that it is required to install the ifenslave package after the installation? Up till now I have not installed this package but my its working fine. so, there is no package then which module managing that configuration? and then why we need this package?

I need little urgent help. Thank you so much.


Regards,
Abdul Samad
↧

Our router doesn't want us to video chat

April 24, 2020, 6:20 am
$
0
0
I don't think this is actually an Ubuntu issue, but hopefully someone can point me in the right direction anyway.

Basically, if I use any video chat software (Zoom, Microsoft Teams, Skype), my internet connection drops 2-3 minutes later and I need to restart the router. This happens with two different Ubuntu machines (both 18.04 LTS) and also with my Android phone.

The router is a fairly old Netgear N150 model DGN1000.

If anyone has any suggestions for things I can try to get this working, it'd be very appreciated.
↧
Viewing all 23300 articles
Browse latest View live
Search
<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>