Arch Linux

kailashkatheth

Member

From: nepal

Registered: 2017-06-14

Posts: 18

Website

wifi dropping frequently

my
hw= Bus 002 Device 002: ID 0bda:8178 Realtek Semiconductor Corp. RTL8192CU 802.11n WLAN Adapter
device is usb wifi dongle which drops connection at regular interval with message on

>>[ 1713.333860] rtlwifi: AP off, try to reconnect now

i am using netct service and wifi-menu to connect
wicd does same and networkmanager cant turn on wifi says its hard blocked any fixes

seth

Member

Registered: 2012-09-03

Posts: 51,056

Re: wifi dropping frequently

Output of

systemctl list-units| grep -iE '(net|wicd|dhcp|wpa|conn)'
systemctl list-unit-files --state=enabled

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

kailashkatheth

Member

From: nepal

Registered: 2017-06-14

Posts: 18

Website

Re: wifi dropping frequently

sys-devices-pci0000:00-0000:00:14.0-usb2-2\x2d2-2\x2d2:1.0-net-wlp0s20u2.device          loaded active plugged   RTL8192CU 802.11n WLAN Adapter                                                                         
sys-devices-pci0000:00-0000:00:1c.2-0000:08:00.0-net-enp8s0.device                       loaded active plugged   RTL810xE PCI Express Fast Ethernet controller                                                           
sys-devices-pci0000:00-0000:00:1c.5-0000:0a:00.0-net-wlp10s0f0.device                    loaded active plugged   RT3290 Wireless 802.11n 1T/1R PCIe (Ralink RT3290LE 802.11bgn 1x1 Wi-Fi and Bluetooth 4.0 Combo Adapter)
sys-subsystem-net-devices-enp8s0.device                                                  loaded active plugged   RTL810xE PCI Express Fast Ethernet controller                                                           
sys-subsystem-net-devices-wlp0s20u2.device                                               loaded active plugged   RTL8192CU 802.11n WLAN Adapter                                                                         
sys-subsystem-net-devices-wlp10s0f0.device                                               loaded active plugged   RT3290 Wireless 802.11n 1T/1R PCIe (Ralink RT3290LE 802.11bgn 1x1 Wi-Fi and Bluetooth 4.0 Combo Adapter)
netctl@wlp0s20u2\x2dTP\x2dLINK_3228.service                                              loaded active exited    Networking for netctl profile wlp0s20u2-TP-LINK_3228                                                   
wicd.service                                                                             loaded active running   Wicd a wireless and wired network manager for Linux                                                     
wpa_supplicant.service                                                                   loaded active running   WPA supplicant                                                                                         
system-netctl.slice                                                                      loaded active active    system-netctl.slice                                                                                     
network.target                                                                           loaded active active    Network   

systemctl list-unit-files --state=enabled

autovt@.service              enabled
bumblebeed.service           enabled
dbus-org.wicd.daemon.service enabled
getty@.service               enabled
wicd.service                 enabled
remote-fs.target             enabled

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,672

Re: wifi dropping frequently

Look into your dmesg when the connection drops. I used to have a similar chip, and as far as I recall the default driver available here is just incredibly unstable.  Afaik there are also multiple drivers available by default so you might want to try some blacklisting shenanigans, can you post a

lspci -k

as well?

Please use [ code ] tags for posting further command outputs.

Last edited by V1del (2018-06-04 19:34:22)

kailashkatheth

Member

From: nepal

Registered: 2017-06-14

Posts: 18

Website

Re: wifi dropping frequently

 
 
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
	Subsystem: Hewlett-Packard Company Haswell-ULT DRAM Controller
	Kernel driver in use: hsw_uncore
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
	Subsystem: Hewlett-Packard Company Haswell-ULT Integrated Graphics Controller
	Kernel driver in use: i915
	Kernel modules: i915
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
	Subsystem: Hewlett-Packard Company Haswell-ULT HD Audio Controller
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
	Subsystem: Hewlett-Packard Company 8 Series USB xHCI HC
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
	Subsystem: Hewlett-Packard Company 8 Series HECI
	Kernel driver in use: mei_me
	Kernel modules: mei_me
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
	Subsystem: Hewlett-Packard Company 8 Series HD Audio Controller
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 1 (rev e4)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1c.1 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 2 (rev e4)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1c.2 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1c.4 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 5 (rev e4)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1c.5 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 6 (rev e4)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
	Subsystem: Hewlett-Packard Company 8 Series USB EHCI
	Kernel driver in use: ehci-pci
	Kernel modules: ehci_pci
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
	Subsystem: Hewlett-Packard Company 8 Series LPC Controller
	Kernel driver in use: lpc_ich
	Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)
	Subsystem: Hewlett-Packard Company 8 Series SATA Controller 1 [AHCI mode]
	Kernel driver in use: ahci
	Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
	Subsystem: Hewlett-Packard Company 8 Series SMBus Controller
	Kernel driver in use: i801_smbus
	Kernel modules: i2c_i801
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)
	Subsystem: Hewlett-Packard Company RTS5229 PCI Express Card Reader
	Kernel driver in use: rtsx_pci
	Kernel modules: rtsx_pci
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07)
	Subsystem: Hewlett-Packard Company RTL810xE PCI Express Fast Ethernet controller
	Kernel driver in use: r8169
	Kernel modules: r8169
09:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/810M/820M / GT 620M/625M/630M/720M] (rev a1)
	Subsystem: Hewlett-Packard Company GeForce 820M
	Kernel driver in use: nvidia
	Kernel modules: nouveau, nvidia_drm, nvidia
0a:00.0 Network controller: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe
	Subsystem: Hewlett-Packard Company Ralink RT3290LE 802.11bgn 1x1 Wi-Fi and Bluetooth 4.0 Combo Adapter
	Kernel driver in use: rt2800pci
	Kernel modules: rt2800pci, wl
0a:00.1 Bluetooth: Ralink corp. RT3290 Bluetooth
	Subsystem: Hewlett-Packard Company Ralink RT3290LE 802.11bgn 1x1 Wi-Fi and Bluetooth 4.0 Combo Adapter

Last edited by V1del (2018-06-04 20:19:12)

seth

Member

Registered: 2012-09-03

Posts: 51,056

Re: wifi dropping frequently

Also you're running wicd and netctl concurrently, that's not going to work since they'll start a race over the interface.
=> Stop and disable wicd.

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

kailashkatheth

Member

From: nepal

Registered: 2017-06-14

Posts: 18

Website

Re: wifi dropping frequently

i stopped it using systemctl stop netctl && systemctl disable netctl , channel width 20 mhz /40mhz /auto which is better ok looks like wifi is stable for now thanks guys switching nework manger fixed this problem until next reboot

kailashkatheth

Member

From: nepal

Registered: 2017-06-14

Posts: 18

Website

Re: wifi dropping frequently

do i need to run mkinitcpio  after blacklisting driver in /etc/modprobe.d/blacklist.conf or is there other way to do so

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,672

Re: wifi dropping frequently

FWIW it seems you have yet another WLAN chip already built in, why not just use that?

You don't need to run mkinitcpio it will simply not be loading on the next boot, however I'm wondering what you did end up blacklisting now. Also FWIW we might need

lsusb -t

instead if it is a dongle, my bad. Thanks for  the code tags attempt, look at the bbcode help page for how to do it correctly.

kailashkatheth

Member

From: nepal

Registered: 2017-06-14

Posts: 18

Website

Re: wifi dropping frequently

pci wifi is damaged it connects only when in touch with router ( few cm range ) problem is fixed somehow

lsusb -t
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/9p, 480M
    |__ Port 2: Dev 2, If 0, Class=Vendor Specific Class, Driver=rtl8192cu, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
        |__ Port 5: Dev 3, If 0, Class=Video, Driver=uvcvideo, 480M
        |__ Port 5: Dev 3, If 1, Class=Video, Driver=uvcvideo, 480M

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,774

Re: wifi dropping frequently

pci wifi is damaged it connects only when in touch with router ( few cm range ) problem is fixed somehow

You may want to search the forums for 'ant_sel'

Edit: No guarantees

Last edited by ewaller (2018-06-04 22:18:31)

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way