我的 wifi 连接（rtl8821ae 驱动程序）出现问题。我可以保持连接数小时（长达 6 小时），然后有时它会崩溃并且在重新启动时不起作用。我得等到第二天。
sugar@hostname:~$ uname -v
#1 SMP Debian 3.16.7-ckt20-1+deb8u3 (2016-01-17)
sugar@hostname:~$ lspci -vnn | grep Network
04:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd.
RTL8821AE 802.11ac PCIe Wireless Network Adapter [10ec:8821]
sugar@hostname:~$ sudo iwconfig
eth0 no wireless extensions.
wlan0 IEEE 802.11abgn ESSID:"Bravotelecom_9947"
Mode:Managed Frequency:2.462 GHz Access Point: E8:CC:18:F7:81:50
Bit Rate=6.5 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-24 dBm
Rx invalid nwid:0 Rx invalid crypt:0 …