Just installed Kubuntu 12.04 on Acer Aspire 5738ZG. Wireless HW:
lspci -k
03:00.0 Network controller: Qualcomm Atheros AR928X Wireless Network Adapter (PCI-Express) (rev 01)
Subsystem: Foxconn International, Inc. T77H047.31 802.11bgn Wireless Half-size Mini PCIe Card [AR9283]
Kernel driver in use: ath9k
Kernel modules: ath9k
Tried using network-manager in the beginning, then replaced it with wicd, back with network-manager again (though missing the status icon and if I run nm-applet then the icon will appear twice).
Here's my /etc/resolv.conf:
nameserver 8.8.8.8
nameserver 156.154.70.1
nameserver 208.67.222.222
search home.gateway
The problem is that I can browse the internet only after I've visited an IP, like (http://) 173.194.40.241 (www.google.com) - after this everything works great.. but why doesn't it work right away - what must I do?
Pinging the gateway (router) IP: 192.168.0.254 or www.google.com (or the IP) FAILS until I visit the IP with my web browser beforehand, which magically makes the pinging successful. IP-configuration seems to be OK:
ifconfig
eth0 Link encap:Ethernet HWaddr 00:26:2d:79:f7:7c
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:16
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr c4:17:fe:17:fa:63
inet addr:192.168.0.103 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::c617:feff:fe17:fa63/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1536 errors:0 dropped:0 overruns:0 frame:0
TX packets:1600 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:947070 (947.0 KB) TX bytes:299593 (299.5 KB)
I've also added this configuration but I'm unsure whether it is needed or not:
cat /etc/modprobe.d/ath9k.conf
options ath9k nohwcrypt=1
UPDATE 2013-12-06
The nohwcrypt=1 does not seem to be necessary, though many sources around the internet recommend it.
I currently have the additional name servers configured, but there probably is no need for them either.
I have not made any additions to the /etc/modprobe.d/blacklist.conf, many sources around the internet suggest putting acer_wmi there, but for me the command rfkill list does not display anything as blocked.