Eu sou novo no Linux. Eu instalei recentemente o Ubuntu 16.04LTS no meu laptop HP, mas não consegui conectar a uma conexão ethernet. Verifiquei minhas configurações de proxy no navegador do moxilla e também no "proxy de rede" do meu computador. Mas ainda assim a mensagem de erro aparece "O servidor proxy está recusando conexões". Eu posso conectar-me à internet através do meu celular android com bastante facilidade. Alguém por favor pode me ajudar a sair deste problema como eu tenho tentado fazer isso desde duas semanas agora. A saída dos comandos é a seguinte:
ifconfig
enp2s0 Link encap:Ethernet HWaddr 48:0f:cf:d8:c0:5f
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:500 errors:0 dropped:0 overruns:0 frame:0
TX packets:500 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:37216 (37.2 KB) TX bytes:37216 (37.2 KB)
..
lshw -C network
*-network
description: Ethernet interface
product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: enp2s0
version: 07
serial: 48:0f:cf:d8:c0:5f
size: 10Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:43 ioport:4000(size=256) memory:d1300000-d1300fff memory:d1000000-d1003fff
*-network DISABLED
description: Wireless interface
product: BCM43142 802.11b/g/n
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlp4s0
version: 01
serial: 74:29:af:fb:1b:b5
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11
resources: irq:16 memory:d1100000-d1107fff
..
lspci -nnk
<snip>
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
Subsystem: Hewlett-Packard Company RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [103c:80c2]
Kernel driver in use: r8169
Kernel modules: r8169
04:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Hewlett-Packard Company BCM43142 802.11b/g/n [103c:804a]
Kernel driver in use: wl
Kernel modules: wl