The wireless card suddenly does not work, I need to restart the computer

[苦恼的饼仔]

My laptop is HASEE K500B-i7D2 The wireless card is qualcomm atheros ar9285, it use ath9k driver Before using Fedora 18, and upgrade to the latest Kernel 3.7.9_x64 Fault conditions in the Internet process often automatically disconnected the upper right corner of the network icon shows not find the network, restart the service also to no avail, only to restart. Temporary use OpenSUSE 12.2, kernel 3.4.28_x64 in all normal, determined not to be a hardware problem.