Bug 81181

Summary:	Lenovo G50-70 i5 500gb: Wireless Network Adapter RTL8723BE slow to intermittent wifi connection (UPSTREAM BUG)
Product:	Drivers	Reporter:	Jerelyn Co (jerelynco)
Component:	network-wireless	Assignee:	drivers_network-wireless (drivers_network-wireless)
Status:	NEW ---
Severity:	high	CC:	alan, ao, greg.bunia, mgtitimoli, slayershade, sven, szg00000
Priority:	P1
Hardware:	Other
OS:	Linux
Kernel Version:	3.16.0-031600rc6-lowlatency	Subsystem:
Regression:	No	Bisected commit-id:

Description Jerelyn Co 2014-07-27 06:26:26 UTC

Wifi Adapter information:

$ lspci -vv -s 02:00.0
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
	Subsystem: Lenovo Device b736
	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 19
	Region 0: I/O ports at 4000 [size=256]
	Region 2: Memory at d0500000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: rtl8723be

I have tried to use four different kernels to check the compatibility:

	Ubuntu, with Linux 3.16.0-031600rc6-generic
	Ubuntu, with Linux 3.13.0-32-generic
	Ubuntu, with Linux 3.13.0-24-generic
	Ubuntu, with Linux 3.13.0-30-generic

Out of the four kernels, 3.16.0-031600rc6-generic performed the best as it enabled me to connect faster and for longer duration. Unfortunately, I eventually get disconnected after a while. 

Launchpad suggested that I report this as an upstream bug. Thank you

Comment 1 John 2015-02-08 13:42:08 UTC

It is still unfixed in v3.19-rc7

These drivers fix the issue for me:
https://github.com/lwfinger/rtlwifi_new/

Duplicate of: 

https://bugzilla.kernel.org/show_bug.cgi?id=85811
https://bugzilla.kernel.org/show_bug.cgi?id=83641
https://bugzilla.kernel.org/show_bug.cgi?id=78991



Temporary fix instructions For end users, till the fix is mainline:

Download them all with the link at right, extrack it to /home/username/wififix
write these in terminal

$cd wififix
$make
$sudo make install