I have a problem with wifi on my new notebook: acer vn7-571 with Ubuntu 14.04 LTS. If I stay nearby the accesspoint it works fine, but if I leave the room (more than 3-4 meters to accesspoint) the connection get lost after a few minutes. In this case I can not use firefox and I also get no answer for ping www.google.de, etc.
I already compiled backports as discribed here by myself (without errors) but it didn't helped me either. I also tried ath9k.conf settings described here, also without success (by the way after installation I did not found the file /etc/modeprobe.d/ath9k.conf so I created it by myself: maybe it can not work that way?).
I hope, someone have another hints for me: thanks!
my network chip:
sudo lshw -c Network
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: eth0
version: 0c
serial: 20:6a:8a:99:c4:55
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:61 ioport:4000(size=256) memory:b3600000-b3600fff memory:b3400000-b3403fff
*-network
description: Wireless interface
product: AR9462 Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 01
serial: 30:10:b3:77:d5:d7
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.13.0-45-generic firmware=N/A ip=192.168.178.37 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:19 memory:b3500000-b357ffff memory:9fb00000-9fb0ffff
Now I tried almost all of suggestions from here: Atheros AR9462 WiFI very unstable & package loss
But it also did not helped me at all.
