Hi, I am using UBuntu 14.04.1 LTS with kernel 3.13.0-32. It comes with the Realtek wifi driver . I could run wifi from the live cd image. However connection used to drop after sometime . Going through this bug report I tried the Fix on #38. It stops the connection drop but there is constant slowing down of connection. If I disconnect and reconnect the wifi connection from NM applet, connection comes back. See the ping report attached. 
uname -a
Linux flex2 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux


lspci  | grep  -i wireless
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter

cat  /etc/modprobe.d/rtl8723be.conf
options rtl8723be fwlps=0 

flex2:~$ modinfo rtl8723be
filename:       /lib/modules/3.13.0-32-generic/kernel/drivers/net/wireless/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:     0D59E0301AAA6E5A93400BB
alias:          pci:v000010ECd0000B723sv*sd*bc*sc*i*
depends:        rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211
intree:         Y
vermagic:       3.13.0-32-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        5E:3C:0F:9C:A6:E3:65:43:53:5F:A2:BB:5B:70:9E:84:F1:6D:A7:C7
sig_hashalgo:   sha512
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)
?field.comment=Hi, I am using UBuntu 14.04.1 LTS with kernel 3.13.0-32. It comes with the Realtek wifi driver . I could run wifi from the live cd image. However connection used to drop after sometime . Going through this bug report I tried the Fix on #38. It stops the connection drop but there is constant slowing down of connection. If I disconnect and reconnect the wifi connection from NM applet, connection comes back. See the ping report attached. 
uname -a
Linux flex2 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux


lspci  | grep  -i wireless
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter

cat  /etc/modprobe.d/rtl8723be.conf
options rtl8723be fwlps=0 

flex2:~$ modinfo rtl8723be
filename:       /lib/modules/3.13.0-32-generic/kernel/drivers/net/wireless/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:     0D59E0301AAA6E5A93400BB
alias:          pci:v000010ECd0000B723sv*sd*bc*sc*i*
depends:        rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211
intree:         Y
vermagic:       3.13.0-32-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        5E:3C:0F:9C:A6:E3:65:43:53:5F:A2:BB:5B:70:9E:84:F1:6D:A7:C7
sig_hashalgo:   sha512
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)