安装完ubuntu 16.04后，家里的路由器可以正常使用wifi，但是学校网络就出问题了，显示wifi已连接，但是上不了网。
1.我点击了以下链接，但没有互联网。 无线已连接但无法访问互联网
以下命令的结果如下
ping 8.8.8.8
cat /etc/lsb-release; uname -a
lspci -nnk | grep -iA2 net
iwconfig
rfkill list all
lsmod
2.ping 8.8.8.8
result:ping 8.8.8.8 connect network is unreachable
3.cat /etc/lsb-release; uname -a
result:DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"
Linux andypc 4.8.0-49-generic #52~16.04.1-Ubuntu SMP Thu Apr 20 10:55:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
4.lspci -nnk | grep -iA2 net
result:01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
Subsystem: Lenovo RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [17aa:3833]
Kernel driver in use: r8169
Kernel modules: r8169
02:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:0042] (rev 31)
Subsystem: Lenovo Device [17aa:0901]
Kernel driver in use: ath10k_pci
4.iwconfig
result:wlp2s0 IEEE 802.11 ESSID:"WRS55"
Mode:Managed Frequency:2.457 GHz Access Point: 98:DE:D0:E5:6B:64
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=52/70 Signal level=-58 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:87 Invalid misc:1326 Missed beacon:0
enp1s0 no wireless extensions.
lo no wireless extensions.
5.rfkill list all
result:0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
6.lsmod
Module Size Used by
ccm 20480 2
rfcomm 77824 0
bnep 20480 2
arc4 16384 2
rtsx_usb_ms 20480 0
memstick 20480 1 rtsx_usb_ms
uvcvideo 90112 0
snd_soc_skl 65536 0
snd_soc_skl_ipc 45056 1 snd_soc_skl
intel_rapl 20480 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
snd_soc_sst_ipc 16384 1 snd_soc_skl_ipc
snd_soc_sst_dsp 32768 1 snd_soc_skl_ipc
x86_pkg_temp_thermal 16384 0
videobuf2_v4l2 24576 1 uvcvideo
intel_powerclamp 16384 0
snd_hda_ext_core 28672 1 snd_soc_skl
snd_hda_codec_hdmi 45056 1
snd_soc_sst_match 16384 1 snd_soc_skl
videobuf2_core 40960 2 uvcvideo,videobuf2_v4l2
snd_hda_codec_realtek 86016 1
snd_hda_codec_generic 73728 1 snd_hda_codec_realtek
snd_soc_core 233472 1 snd_soc_skl
videodev 180224 3 uvcvideo,videobuf2_core,videobuf2_v4l2
coretemp 16384 0
snd_compress 20480 1 snd_soc_core
kvm 598016 0
ac97_bus 16384 1 snd_soc_core
irqbypass 16384 1 kvm
snd_pcm_dmaengine 16384 1 snd_soc_core
media 40960 2 uvcvideo,videodev
snd_hda_intel 36864 5
snd_hda_codec 135168 4 snd_hda_intel,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek
snd_hda_core 86016 7 snd_hda_intel,snd_hda_codec,snd_hda_ext_core,snd_soc_skl,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek
ath10k_pci 45056 0
ath10k_core 335872 1 ath10k_pci
crct10dif_pclmul 16384 0
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
snd_hwdep 16384 1 snd_hda_codec
aesni_intel 167936 4
snd_pcm 110592 9 snd_hda_intel,snd_hda_codec,snd_pcm_dmaengine,snd_hda_ext_core,snd_hda_core,snd_soc_skl,snd_hda_codec_hdmi,snd_soc_core
aes_x86_64 20480 1 aesni_intel
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
ath 32768 1 ath10k_core
lrw 16384 1 aesni_intel
glue_helper 16384 1 aesni_intel
hci_uart 98304 0
btusb 45056 0
btrtl 16384 1 btusb
btqca 16384 1 hci_uart
btbcm 16384 2 hci_uart,btusb
snd_rawmidi 32768 1 snd_seq_midi
btintel 16384 2 hci_uart,btusb
ablk_helper 16384 1 aesni_intel
cryptd 24576 3 ablk_helper,ghash_clmulni_intel,aesni_intel
bluetooth 557056 33 btrtl,hci_uart,btintel,btqca,bnep,btbcm,rfcomm,btusb
mac80211 761856 1 ath10k_core
cfg80211 581632 3 mac80211,ath,ath10k_core
snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi
joydev 20480 0
input_leds 16384 0
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 32768 2 snd_seq,snd_pcm
ideapad_laptop 24576 0
serio_raw 16384 0
sparse_keymap 16384 1 ideapad_laptop
ucsi 16384 0
tpm_crb 16384 0
mei_me 40960 0
snd 86016 22 snd_compress,snd_hda_intel,snd_hwdep,snd_seq,snd_hda_codec,snd_timer,snd_rawmidi,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_seq_device,snd_hda_codec_realtek,snd_soc_core,snd_pcm
mei 102400 1 mei_me
shpchp 36864 0
intel_lpss_acpi 16384 0
soundcore 16384 1 snd
mac_hid 16384 0
intel_pch_thermal 16384 0
intel_lpss 16384 1 intel_lpss_acpi
acpi_pad 24576 0
parport_pc 32768 0
ppdev 20480 0
lp 20480 0
parport 49152 3 lp,parport_pc,ppdev
autofs4 40960 2
rtsx_usb_sdmmc 28672 0
rtsx_usb 24576 2 rtsx_usb_sdmmc,rtsx_usb_ms
amdkfd 139264 1
amd_iommu_v2 20480 1 amdkfd
radeon 1515520 1
i915 1314816 105
psmouse 139264 0
ttm 102400 1 radeon
i2c_algo_bit 16384 2 radeon,i915
drm_kms_helper 167936 2 radeon,i915
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
fb_sys_fops 16384 1 drm_kms_helper
drm 368640 9 radeon,i915,ttm,drm_kms_helper
r8169 81920 0
ahci 36864 3
mii 16384 1 r8169
libahci 32768 1 ahci
wmi 16384 1 ideapad_laptop
pinctrl_sunrisepoint 28672 0
i2c_hid 20480 0
video 40960 2 i915,ideapad_laptop
hid 122880 1 i2c_hid
pinctrl_intel 20480 1 pinctrl_sunrisepoint
fjes 28672 0
**我的大学连接 wifi 指南......https://www.urz.ovgu.de/urz/Unsere+Leistungen/Datennets/Campus/WLAN/Anleitungen-p-1072.html