I know this thread is now two years old but the problem with this hardware almost drove me nuts ...

I am here on a HP Pavilion Laptop with beatsaudio. No Model Number - nothing.

The Wifi card is: (in Germany!)

--------------------------------------

 lspci -nn | grep -iA2 net
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]

--------------------------------------

I am now under kernel:
4.4.0-21-generic

-------------------------------------

Before I tried everything I could find to get my wifi up but I do not even see one spot. So no connection at all. I even cloned git and compiled the driver - which worked fine. 

By the way the BT seems to be fine - although I have not checked cause I do not need BT.

---------------------------------------------
Here is what I tried:

rfkill list all; hciconfig -a
0: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
hci0:	Type: BR/EDR  Bus: USB
	BD Address: 2C:33:7A:3F:E4:3E  ACL MTU: 820:8  SCO MTU: 255:16
	UP RUNNING PSCAN 
	RX bytes:1327 acl:0 sco:0 events:139 errors:0
	TX bytes:25058 acl:0 sco:0 commands:139 errors:0
	Features: 0xff 0xff 0xff 0xfe 0xdb 0xff 0x7b 0x87
	Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
	Link policy: RSWITCH HOLD SNIFF PARK 
	Link mode: SLAVE ACCEPT 
	Name: 'mint-0'
	Class: 0x740100
	Service Classes: Rendering, Object Transfer, Audio, Telephony
	Device Class: Computer, Uncategorized
	HCI Version: 4.0 (0x6)  Revision: 0xe2f
	LMP Version: 4.0 (0x6)  Subversion: 0x9f73
	Manufacturer: Realtek Semiconductor Corporation (93)

-------------------------------------

I added the options sugested in rtl8723be.conf

options rtl8723be fwlps=0 swlps=0

But this did not help either.

--------------------------------------

lsmod reports:

rfcomm                 69632  12 
rtl8723be             139264  0 
btcoexist             180224  1 rtl8723be
rtl_pci                40960  1 rtl8723be
rtlwifi                98304  3 btcoexist,rtl_pci,rtl8723be
hp_wmi                 16384  0 
mac80211              733184  3 rtl_pci,rtlwifi,rtl8723be
sparse_keymap          16384  1 hp_wmi
kvm                   532480  0 
irqbypass              16384  1 kvm
btusb                  45056  0 
crct10dif_pclmul       16384  0 
btrtl                  16384  1 btusb
btbcm                  16384  1 btusb
...

-------------------------------------------------------

dmesg | grep rtl reports:

[    8.982260] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[    8.982262] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[    9.064265] rtlwifi: module verification failed: signature and/or required key missing - tainting kernel
[    9.403770] Using firmware rtlwifi/rtl8723befw.bin
[    9.404023] rtlwifi: channel plan 0x20
[    9.404027] rtlwifi: country code 11
[    9.422483] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[    9.423458] rtlwifi: wireless switch is on

--------------------------------------------------------

modinfo rtl8723be

filename:       /lib/modules/4.4.0-21-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723be/rtl8723be.ko
firmware:       rtlwifi/rtl8723befw.bin
description:    Realtek 8723BE 802.11n PCI wireless
license:        GPL
author:         Realtek WlanFAE	<email address hidden>
author:         PageHe	<email address hidden>
srcversion:     00619764255210776FAB54D
alias:          pci:v000010ECd0000B723sv*sd*bc*sc*i*
depends:        rtlwifi,rtl_pci,btcoexist,mac80211
vermagic:       4.4.0-21-generic SMP mod_unload modversions 
parm:           swlps:bool
parm:           swenc:using hardware crypto (default 0 [hardware])
 (bool)
parm:           ips:using no link power save (default 1 is open)
 (bool)
parm:           fwlps:using linked fw control power save (default 1 is open)
 (bool)
parm:           msi:Set to 1 to use MSI interrupts mode (default 0)
 (bool)
parm:           debug:Set debug level (0-5) (default 0) (int)
parm:           disable_watchdog:Set to 1 to disable the watchdog (default 0)
 (bool)
parm:           ant_sel:Set to 1 or 2 to force antenna number (default 0)
 (int)


---------------------------------------------------------

sudo iwlist scan

wlan0     No scan results

---------------------------------------------------------

sudo iwconfig
eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Encryption key:off
          Power Management:off
          
lo        no wireless extensions.

----------------------------------------------------------

sudo ifconfig wlan0 down
sudo ifconfig wlan0 up

without errors.

----------------------------------------------------------

In my disappointment I tried this:



From https://bugzilla.kernel.org/show_bug.cgi?id=83641#c1

"There is a new version of this driver at GitHub. You will need to have the package with the kernel headers installed.

git clone http://github.com/lwfinger/rtlwifi_new.git
cd rtlwifi_new
make
sudo make install

This version of the driver will be submitted for inclusion in kernel 3.18. I ran it for 39 hours with no disconnects."

---------------------------------

no errors but no change.

---------------------------------

Checked this link:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1240940

---------------------------------

Then I tried several params and finally this worked somehow.

sudo modprobe -rv rtl8723be

sudo modprobe -v rtl8723be msi=1

I now was able to see wifi networks - hoorayyyy!! :)

---------------------------------------------------------

I then tried to connect to my network - but failed.

I am sitting 1 m next to my router.

-----------------------------------------------------------
dmesg:

[ 2027.454666] AMD-Vi: Event logged [INVALID_DEVICE_REQUEST device=00:00.1 address=0x000000fdf8080020 flags=0x0a00]
[ 2027.464903] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2051.922688] cfg80211: World regulatory domain updated:
[ 2051.922698] cfg80211:  DFS Master region: unset
[ 2051.922701] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 2051.922709] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2051.922714] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2051.922719] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2051.922723] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2051.922727] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2051.963665] Using firmware rtlwifi/rtl8723befw.bin
[ 2051.963841] rtlwifi: channel plan 0x20
[ 2051.963845] rtlwifi: country code 11
[ 2051.965731] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[ 2051.966606] rtlwifi: wireless switch is on
[ 2052.401828] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2221.380867] r8169 0000:03:00.0 eth0: link down
[ 2229.644057] systemd-hostnamed[3082]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[ 2254.504927] wlan0: authenticate with 58:7f:66:65:73:6c
[ 2254.933657] wlan0: send auth to 58:7f:66:65:73:6c (try 1/3)
[ 2256.065621] wlan0: send auth to 58:7f:66:65:73:6c (try 2/3)
[ 2257.065727] wlan0: send auth to 58:7f:66:65:73:6c (try 3/3)
[ 2258.089758] wlan0: authentication with 58:7f:66:65:73:6c timed out

---------------------------------------

Then I changed region to Germany:

echo 'KERNEL=="regulatory*", ACTION=="change", SUBSYSTEM=="platform", RUN+="/sbin/iw reg set DE"' | sudo tee /etc/udev/rules.d/regulatory.rules

and then I was able to connect. My options are now:

options rtl8723be fwlps=0 swlps=0 msi=1


Now it runs perfectly! Thanks to all!!