我有一台 HP 255 G2 笔记本电脑。
在尝试了几个发行版后，我坚持使用 Linux Mint 17.1。升级到 LM 18 后，WiFi 不再工作。
作为菜鸟，我只是尝试安装其他发行版。他们的现场 DVD/USB 都可以使用 WiFi，但安装后（有时仅在升级和更新之后）就不再使用了。
现在我已经安装了 UberStudent 4.3，它一直有效 - 直到第一次重新启动。
lspci输出：
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8330]
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kabini HDMI/DP Audio
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 0
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
00:02.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
00:02.5 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 01)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode]
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 39)
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39)
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 39)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 3a)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 02)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 5
01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07)
03:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)
lsmod输出：
Module Size Used by
pci_stub 16384 1
vboxpci 24576 0
vboxnetadp 28672 0
vboxnetflt 28672 0
vboxdrv 466944 3 vboxnetadp,vboxnetflt,vboxpci
bnep 20480 0
rfcomm 69632 0
binfmt_misc 20480 1
uvcvideo 90112 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_core 49152 1 uvcvideo
v4l2_common 16384 1 videobuf2_core
videodev 172032 3 uvcvideo,v4l2_common,videobuf2_core
media 24576 2 uvcvideo,videodev
hp_wmi 16384 0
sparse_keymap 16384 1 hp_wmi
amd_freq_sensitivity 16384 0
kvm_amd 61440 0
kvm 507904 1 kvm_amd
snd_hda_codec_realtek 86016 1
arc4 16384 2
snd_hda_codec_generic 73728 1 snd_hda_codec_realtek
crct10dif_pclmul 16384 0
snd_hda_codec_hdmi 49152 1
crc32_pclmul 16384 0
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
ath9k 143360 0
snd_hda_intel 36864 5
ath9k_common 36864 1 ath9k
ath3k 20480 0
snd_hda_codec 135168 4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel
btusb 45056 0
btrtl 16384 1 btusb
aesni_intel 167936 0
btbcm 16384 1 btusb
ath9k_hw 466944 2 ath9k_common,ath9k
btintel 16384 1 btusb
snd_hda_core 65536 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
aes_x86_64 20480 1 aesni_intel
ath 32768 3 ath9k_common,ath9k,ath9k_hw
lrw 16384 1 aesni_intel
gf128mul 16384 1 lrw
snd_hwdep 16384 1 snd_hda_codec
glue_helper 16384 1 aesni_intel
bluetooth 512000 9 bnep,ath3k,btbcm,btrtl,btusb,rfcomm,btintel
snd_rawmidi 32768 1 snd_seq_midi
ablk_helper 16384 1 aesni_intel
mac80211 729088 1 ath9k
dm_multipath 24576 0
cryptd 20480 2 aesni_intel,ablk_helper
scsi_dh 16384 1 dm_multipath
joydev 20480 0
input_leds 16384 0
serio_raw 16384 0
cfg80211 540672 4 ath,ath9k_common,ath9k,mac80211
snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi
edac_core 53248 0
fam15h_power 16384 0
edac_mce_amd 24576 0
k10temp 16384 0
snd_pcm 102400 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
rtsx_pci_ms 20480 0
memstick 20480 1 rtsx_pci_ms
i2c_piix4 24576 0
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 32768 2 snd_pcm,snd_seq
snd 81920 21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
shpchp 36864 0
soundcore 16384 1 snd
hp_wireless 16384 0
mac_hid 16384 0
parport_pc 32768 0
ppdev 20480 0
lp 20480 0
parport 49152 3 lp,ppdev,parport_pc
btrfs 950272 0
xor 24576 1 btrfs
raid6_pq 102400 1 btrfs
dm_mirror 24576 0
dm_region_hash 20480 1 dm_mirror
dm_log 20480 2 dm_region_hash,dm_mirror
amdgpu 811008 0
rtsx_pci_sdmmc 24576 0
amdkfd 122880 1
amd_iommu_v2 20480 1 amdkfd
radeon 1507328 3
i2c_algo_bit 16384 2 amdgpu,radeon
ttm 94208 2 amdgpu,radeon
drm_kms_helper 126976 2 amdgpu,radeon
psmouse 126976 0
ahci 36864 2
drm 360448 7 ttm,drm_kms_helper,amdgpu,radeon
libahci 32768 1 ahci
r8169 81920 0
rtsx_pci 53248 2 rtsx_pci_ms,rtsx_pci_sdmmc
mii 16384 1 r8169
wmi 20480 1 hp_wmi
video 36864 0
dmesg | grep -i ath输出：
[ 17.198709] usbcore: registered new interface driver ath3k
[ 17.501525] ath: phy0: WB335 1-ANT card detected
[ 17.501533] ath: phy0: Set BT/WLAN RX diversity capability
[ 17.508317] ath: phy0: Enable LNA combining
[ 17.509425] ath: phy0: ASPM enabled: 0x43
[ 17.509431] ath: EEPROM regdomain: 0x6a
[ 17.509434] ath: EEPROM indicates we should expect a direct regpair map
[ 17.509439] ath: Country alpha2 being used: 00
[ 17.509441] ath: Regpair used: 0x6a
[ 17.616700] ieee80211 phy0: Atheros AR9565 Rev:1 mem=0xffffc90002700000, irq=39
怎么了？