I installed Ubuntu 14.04 on my new Lenovo G50-70. The wifi works perfectly in windows, however it behaves strangely on Ubuntu. It is slow, doesn't load heavier sites at all, and after a while, completely drops.
After some research I discovered: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1320070
sudo rmmod rtl8723be && sudo modprobe rtl8723be does not change anything, the wifi remains gone.
The first thing I tried was
sudo make install the driver from this repo: https://github.com/lwfinger/rtlwifi_new. Unfortunately nothing changed.
Next I tried to disable the sleep feature:
echo "options rtl8723be fwlps=0" | sudo tee /etc/modprobe.d/rtl8723be.conf, without any luck.
I then tried:
sudo rmmod -v ideapad_laptop
But removing that module did not help either.
Here is some environment info:
uname -a Linux zirconcode 3.13.0-40-generic #69-Ubuntu SMP Thu Nov 13 17:53:56 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux lsusb | grep Rea Bus 002 Device 006: ID 0bda:b728 Realtek Semiconductor Corp. Bus 002 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller lsmod | grep rtl rtl8723be 139336 0 btcoexist 183378 1 rtl8723be rtl_pci 39740 1 rtl8723be rtlwifi 121008 3 btcoexist,rtl_pci,rtl8723be mac80211 626557 3 rtl_pci,rtlwifi,rtl8723be cfg80211 484040 2 mac80211,rtlwifi
I am stuck as none of the solutions seem to work. Any ideas would be much appreciated.