I would recommend against following the instructions in #29. For me it causes a kernel panic I had to fix by blacklisting the rtl8723be driver in recovery mode, and the makefile also seemed to delete the existing driver already in the kernel, so I ended up reinstalling the OS to fix it.
As for how I got my wifi working: Installed 14.04 from the live disk. Did a full update and upgrade of packages while connected via ethernet. This should give you the 3.13.0-29-generic #53-Ubuntu kernel. When you reboot into this kernel, you will see the error in #19 in your dmesg about missing firmware. As mentioned in #20, you will need to download the rtl8723befw.bin firmware and then copy it to /lib/firmware/rtlwifi/ Reboot and wifi will work. So two questions- Will this firmware be included in a future kernel update for Trusty? Will there be an updated iso for Trusty at some point with a newer kernel, so that this wifi card will work out of the box? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1320070 Title: Realtek Wifi card RTL8723BE drops connection with MSI enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1320070/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs