The same behaviour (problem) on my Lenovo M30-70 with rtl8723be wifi. I am using Kernel 3.19.0-17-generic on Ubuntu 15.04, latest Bios.
I tried many workarounds from https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1320070 but no change, the connection is lost after a while. Finally I tried the rtlwifi_new driver from https://bugzilla.kernel.org/show_bug.cgi?id=83641#c1. I first thoght it works stable but after a while it also loses the connection (see my comment there). After reconnect it works for a while again. ** Bug watch added: Linux Kernel Bug Tracker #83641 http://bugzilla.kernel.org/show_bug.cgi?id=83641 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1442908 Title: Realtek RTL8723BE wireless card drops connection in Linux kernel 3.19.0-13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1442908/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs