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WiFi keeps dropping after several minutes

asked 2017-03-23 14:10:51 +0000

0novanta gravatar image

updated 2017-03-29 09:30:25 +0000

hhlp gravatar image

A couple of days ago I ran # dnf update in order to resolve a problem with the installing of Oracle Virtual Machine and I solved it. But somehow I got a new problem with wifi which I don't know if it's linked to the updating. The wifi started to disconnect after 10-15 minutes (showing the message activation of network connection failed) and to reconnect periodically automatically, so I searched a little and found that this could solve the issue su systemctl restart NetworkManager.service, but it didn't, now it can't connect to the home's wifi, the network manager asks the password which I type in correctly and then it asks it again and again without any error message. The weird thing is that the cable works fine and also the wifi works fine on my smartphone, this is why I think the problem has something to do with the updating command. If I run lspci -vv -s 03:00.0 when wifi is turned on the output is:

03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac PCIe Wireless Network Adapter
Subsystem: XAVi Technologies Corp. Device 2482
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 52
Region 0: I/O ports at 3000 [size=256]
Region 2: Memory at b2000000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: rtl8821ae
Kernel modules: rtl8821ae, wl

The machine on which I'm having the issue is an ASUS with Fedora 25. Thank you for your help.

P.S. Now it started again to connect and disconnect (showing activation to network connection failed) This iwconfig wlp3s0,where wlp3s0 is my wifi network, gives:

wlp3s0    IEEE 802.11  ESSID:off/any  
      Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
      Retry short limit:7   RTS thr=2346 B   Fragment thr:off
      Power Management:off
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Try to read man iwconfig in your system. Wifi has timeout to go down.

madchem ( 2017-03-23 15:13:41 +0000 )edit

I don't really know what to look at and where could be the problem.

0novanta ( 2017-03-23 16:12:59 +0000 )edit

2 answers

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answered 2017-03-24 14:04:11 +0000

0novanta gravatar image

The solution I've found is to upgrade some drivers. Please follow the instructions here. After upgrading reboot the system.

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answered 2017-03-25 07:08:41 +0000

I had issues with my WIFI dropping a lot and ended up turning off IPv6 and have had way better results.

When your connection dies check your IP address, if it is IPv6 and you are stuck in limbo, turn off the wifi and turn it back on. On my system I would see an IPv4 get issued and connectivity returned only for an IPv6 to get handed out after a little while and loss of connection would follow.

bash-3.2$ su -c 'echo "net.ipv6.conf.all.disable_ipv6 = 1" >> /etc/sysctl.conf'
bash-3.2$ su -c 'sysctl -p'
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I've read somewhere that sometimes the IPv6 could be the problem and turning it off could solve the problem, but I found a different solution which is to upgrade the network controller drivers.

0novanta ( 2017-03-25 10:54:24 +0000 )edit

i have the same problem with my wifi and ipv6 and have installed virtualbox and vmware too

christianbueno ( 2017-09-24 01:03:53 +0000 )edit

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Asked: 2017-03-23 14:10:51 +0000

Seen: 982 times

Last updated: Mar 29