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.
Best Answer
Upgrading my kernel from 3.13 to 3.16 (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.16-utopic/) and reinstalling the new driver from https://github.com/lwfinger/rtlwifi_new seems to have solved my problems. Don't forget to reboot.
Note: Upgrading the kernel in itself did not help.