I'm really struggling to have working wifi on my laptop lenovo E540. I googled about my network card using ubuntu, but nothing solved my problem.
First of all, I installed Ubuntu 14.04.1 LTS 64-bit. I could use wifi, but after few minutes it would turn off and I could not connect to wifi again. So I started googling.
lspci:
Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
First of all, I found this thread with comment 29 to be helpful for many users having same controller as me. So I installed it and got kernel panic. I googled more. Found kozak127's edited rtl8723be. Tried it, got kernel panic.
Here is suggested to use older kernel. No differece there for me.
My kernel:
3.13.0-35-generic
So my question is: Is there a way to get this realtek controller working? how?
Offtopic: I bought a new laptop, so I would have less problems than I had with lenovo n500 and ubuntu. Is there a brand that works great with linux? I looked up lenovo n540 and linux compatibility and no problems were reported there.
EDIT 1:
/etc/modprobe.d/rtl8723be.conf
/lib/modules/3.13.0-32-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723be
/lib/modules/3.13.0-32-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723be/rtl8723be.ko
/usr/src/linux-headers-3.13.0-32/drivers/net/wireless/rtlwifi/rtl8723be
/usr/src/linux-headers-3.13.0-32/drivers/net/wireless/rtlwifi/rtl8723be/Makefile
/usr/src/linux-headers-3.13.0-32-generic/include/config/rtl8723be.h
/usr/src/linux-headers-3.13.0-35/drivers/net/wireless/rtlwifi/rtl8723be
/usr/src/linux-headers-3.13.0-35/drivers/net/wireless/rtlwifi/rtl8723be/Makefile
/usr/src/linux-headers-3.13.0-35-generic/include/config/rtl8723be.h