I own an HP Pavillion p6520y with Ubuntu 12.04 installed. This morning, I was unable to access the internet. Chromium tells me "The server at www.google.com can't be found, because the DNS lookup failed." Firefox says "Server not found". Because I have had issues with Ubuntu and networking in the past, I initially thought this was a driver issue, but it didn't match the symptoms I had encountered previously. I contacted my ISP and they ran some diagnostics. The cable modem was running fine and they could see my computer. I narrowed down the cause to be something on my system. I ran a few live CDs (Crunchbang, Mint, etc.) to see if it was the installed OS. Unfortunately, none of them could access the internet either. I was able to connect from an ancient laptop running Debian Squeeze. I downloaded the driver (RealTek r616808.032.00), copied it to my desktop and installed it to no avail.
Here are some of my system specifics:
Code:dmesg | tail[ 21.661675] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 21.835451] r8168: eth0: link down
[ 21.836408] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 21.837469] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 22.033587] vboxpci: IOMMU not found (not registered)
[ 23.090082] radeon 0000:01:05.0: texture bo too small (1600 900 26 0 -> 5785600 have 5763072)
[ 23.090086] radeon 0000:01:05.0: alignments 1600 64 8 256
[ 23.090088] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !
[ 23.450313] r8168: eth0: link up
[ 23.450984] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 23.832029] r8168: eth0: link up
[ 24.201765] init: plymouth-stop pre-start process (1555) terminated with status 1
[ 34.176032] eth0: no IPv6 routers presentCode:lfconfigeth0 Link encap:Ethernet HWaddr 78:e7:d1:ca:3d:ae
inet addr:68.199.112.124 Bcast:68.199.115.255 Mask:255.255.252.0
inet6 addr: fe80::7ae7:d1ff:feca:3dae/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:750 errors:0 dropped:0 overruns:0 frame:0
TX packets:121 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:45564 (45.5 KB) TX bytes:14235 (14.2 KB)
Interrupt:42 Base address:0x6000
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:16436 Metric:1
RX packets:36 errors:0 dropped:0 overruns:0 frame:0
TX packets:36 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2174 (2.1 KB) TX bytes:2174 (2.1 KB)Code:lsmod | grep r8168r8168 244911 0Code:lspci00:00.0 Host bridge: Advanced Micro Devices [AMD] RS880 Host Bridge
00:01.0 PCI bridge: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (int gfx)
00:05.0 PCI bridge: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 1)
00:0a.0 PCI bridge: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 5)
00:11.0 RAID bus controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 SATA Controller [Non-RAID5 mode]
00:12.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.1 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0 USB OHCI1 Controller
00:12.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.1 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0 USB OHCI1 Controller
00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller (rev 3c)
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 LPC host controller
00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge
00:14.5 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Link Control
01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RS880 [Radeon HD 4200]
02:00.0 Network controller: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)
04:06.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev c0)Code:uname -aLinux ubuntu 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
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