Recentemente, a Internet estava agindo de forma estranha na minha partição do Ubuntu. Ele funciona 100% bem quando eu dual-boot do Windows, mas a partição do Ubuntu se conecta ao Wi-Fi por um período indeterminado de tempo (0-10 minutos) antes de morrer e não trabalhar ...
Estou executando o 14.04, que instalei e reinstalei ontem.
ping 8.8.8.8
geralmente funciona por alguns minutos depois que eu ligo meu laptop, mas depois ele retorna o erro Host Unreachable.
Eu li vários artigos neste site sobre o mesmo problema e não consigo encontrar uma solução. Anexei saída de terminal de vários comandos que vi usuários pedindo:
route -n
output: Eu não sei muito sobre o que está acontecendo, mas isso parece errado
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 172.31.98.1 0.0.0.0 UG 0 0 0 wlan0
172.31.98.0 0.0.0.0 255.255.254.0 U 9 0 0 wlan0
grep wl /etc/modprobe.d/*
output:
/etc/modprobe.d/blacklist-watchdog.conf:blacklist twl4030_wdt
/etc/modprobe.d/iwlwifi.conf:# /etc/modprobe.d/iwlwifi.conf
/etc/modprobe.d/iwlwifi.conf:# iwlwifi will dyamically load either iwldvm or iwlmvm depending on the
/etc/modprobe.d/iwlwifi.conf:# microcode file installed on the system. When removing iwlwifi, first
/etc/modprobe.d/iwlwifi.conf:# remove the iwl?vm module and then iwlwifi.
/etc/modprobe.d/iwlwifi.conf:remove iwlwifi \
/etc/modprobe.d/iwlwifi.conf:(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
rfkill list
output:
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
iwconfig
output:
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"Google Starbucks"
Mode:Managed Frequency:2.412 GHz Access Point: 18:64:72:65:86:20
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-33 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:42 Missed beacon:0
lo no wireless extensions.
ifconfig
output:
eth0 Link encap:Ethernet HWaddr 54:ee:75:28:64:8d
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)
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:65536 Metric:1
RX packets:225 errors:0 dropped:0 overruns:0 frame:0
TX packets:225 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:16928 (16.9 KB) TX bytes:16928 (16.9 KB)
wlan0 Link encap:Ethernet HWaddr b0:10:41:8a:ee:47
inet addr:172.31.99.170 Bcast:172.31.99.255 Mask:255.255.254.0
inet6 addr: fe80::b210:41ff:fe8a:ee47/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:198 errors:0 dropped:0 overruns:0 frame:0
TX packets:341 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:257409 (257.4 KB) TX bytes:34163 (34.1 KB)
lsusb
output:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 03eb:8a1b Atmel Corp.
Bus 001 Device 004: ID 0bda:b728 Realtek Semiconductor Corp.
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 5986:055d Acer, Inc
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lspci -nnk | grep -iA2 net
output:
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Lenovo Device [17aa:b736]
Kernel driver in use: rtl8723be
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
Subsystem: Lenovo Device [17aa:3810]
Kernel driver in use: r8169