WLAN connection very unstable and easy to fail

English Network/Internet
1

https://lh3.googleusercontent.com/-TdCoGw9iF-k/VkHweKbkutI/AAAAAAAAC_s/L9i5KmfKLEg/w346-h195/10.11.15%2B-%2B1

It’s very hard for my computer to maintain a stable WLAN connection in openSUSE. Just several minutes after connection is established, it would lose all up/download speed. Disconnecting and reconnecting makes things worse: the connection status would stall at “Configuring Network Interface”. Some time later pop-up notifications above would show (the second one sometimes reads “DHCP configuration failed”). In openSUSE 13.2 I’ve also encountered it. But in Windows10 or Ubuntu 15.04/15.10 the WLAN connection works well.

Here’s my WLAN card info:

  P: /devices/pci0000:00/0000:00:1c.2/0000:04:00.0
  E: DEVPATH=/devices/pci0000:00/0000:00:1c.2/0000:04:00.0
  E: DRIVER=rtl8723be
  E: ID_MODEL_FROM_DATABASE=RTL8723BE PCIe Wireless Network Adapter
  E: ID_PCI_CLASS_FROM_DATABASE=Network controller
  E: ID_PCI_SUBCLASS_FROM_DATABASE=Network controller
  E: ID_VENDOR_FROM_DATABASE=Realtek Semiconductor Co., Ltd.
  E: MODALIAS=pci:v000010ECd0000B723sv000017AAsd0000B736bc02sc80i00
  E: PCI_CLASS=28000
  E: PCI_ID=10EC:B723
  E: PCI_SLOT_NAME=0000:04:00.0
  E: PCI_SUBSYS_ID=17AA:B736
  E: SUBSYSTEM=pci
  E: USEC_INITIALIZED=212696

  P: /devices/pci0000:00/0000:00:1c.2/0000:04:00.0/net/wlan0
  E: DEVPATH=/devices/pci0000:00/0000:00:1c.2/0000:04:00.0/net/wlan0
  E: DEVTYPE=wlan
  E: ID_BUS=pci
  E: ID_MM_CANDIDATE=1
  E: ID_MODEL_FROM_DATABASE=RTL8723BE PCIe Wireless Network Adapter
  E: ID_MODEL_ID=0xb723
  E: ID_NET_DRIVER=rtl8723be
  E: ID_NET_LINK_FILE=/usr/lib/systemd/network/99-default.link
  E: ID_NET_NAME_MAC=wlxc48e8fc82029
  E: ID_NET_NAME_PATH=wlp4s0
  E: ID_PATH=pci-0000:04:00.0
  E: ID_PATH_TAG=pci-0000_04_00_0
  E: ID_PCI_CLASS_FROM_DATABASE=Network controller
  E: ID_PCI_SUBCLASS_FROM_DATABASE=Network controller
  E: ID_VENDOR_FROM_DATABASE=Realtek Semiconductor Co., Ltd.
  E: ID_VENDOR_ID=0x10ec
  E: IFINDEX=2
  E: INTERFACE=wlan0
  E: SUBSYSTEM=net
  E: SYSTEMD_ALIAS=/sys/subsystem/net/devices/wlan0
  E: TAGS=:systemd:
  E: USEC_INITIALIZED=272728
2

Try

  • Rebootng your Access Point

Also,
What type of typical Internet/network activity? ie. Torrents? Large Downloads?
Are there any appliances like microwave ovens or refrigerators anywhere in the vicinity?
Access point distance, line of sight or through a wall or floor and if so what type of material and angle?
Do you have another Internet device to compare connectivity, even a smartphone?

Have you ever run Wireshark? It can tell you what kind of packets are being dropped if you have connection quality or mis-configuration issues. With Wireshark you can capture and view packets in real time, otherwise you can do a tcpdump for later analysis.

TSU

3

That’s definitely the problem of SUSE Firmware. As I said, smartphone and the same computer with other OS won’t encounter this problem at all.