I have an old 32bits Toshiba laptop (A355-s6943) and now I aquired a new 64bits Toshiba laptop (s55t-c5325-4k). Both of them have Mint 18 and everything works fine, except this:If only the old laptop is connected to wifi, it (the laptop) works very nice, perfectly.But when I connect the new laptop to the same wifi, the internet in the old one stop working or works extremely slow! Unusable.I saw that the hostnames were equals so that I changed the hostname in the old laptop. It didn't work, so I decided to format the old one and make a fresh install. Even this didn't work. In fact, even when using live-usb in the old laptop its wifi dont work if the new laptop is connected to the same wifi.I suspect that it could an 'radio' interference because my new laptop uses a/c wifi and the old one uses bgn wifi. But I am not sure because other devices work fine even when that new laptop is connected.Has somebody any ideas about how I can solve this problem?Thank you so much!Edit 22/11/16:# new laptopsidney@devlins ~ $ ip addr show1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host        valid_lft forever preferred_lft forever2: enp14s0:  mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000    link/ether 2c:60:0c:f3:xx:3f brd ff:ff:ff:ff:ff:ff3: wlp13s0:  mtu 1500 qdisc mq state UP group default qlen 1000    link/ether dc:53:60:xx:25:03 brd ff:ff:ff:ff:ff:ff    inet 192.168.0.107/24 brd 192.168.0.255 scope global dynamic wlp13s0       valid_lft 6917sec preferred_lft 6917sec    inet6 fe80::3a7:b660:xxxx:11de/64 scope link        valid_lft forever preferred_lft forever# old laptopfamilia@familialins ~ $ ip addr show1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host        valid_lft forever preferred_lft forever2: enp14s0:  mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000    link/ether 00:23:5a:xx:1d:29 brd ff:ff:ff:ff:ff:ff3: wlp20s0:  mtu 1500 qdisc mq state UP group default qlen 1000    link/ether 00:22:fa:xx:1e:e4 brd ff:ff:ff:ff:ff:ff    inet 192.168.0.104/24 brd 192.168.0.255 scope global dynamic wlp20s0       valid_lft 7069sec preferred_lft 7069sec    inet6 fe80::ce0a:f734:xxxx:2ba2/64 scope link        valid_lft forever preferred_lft forever
Wifi does not work in laptop 1 when laptop 2 is connected
linux;linux mint;wifi