I am going to follow the guideline from "HOWTO post a Wireless issue (ticket)" in describing my problem.
0) Problem briefly described
An old problem. Same happened on Ubuntu 10.04, 11.10, openSUSE 12.1 and Fedora 16.
Installed OS from a pendrive. Installation went well, no problem at all.
The OS can be personalised, configured and used as long as is not connected to the Internet. Internet is connected via home wireless connection. Connecting to it is not a problem. The problem is once it is connected, the OS freezes and has to be hard-shutdown.
Tried nohwcrypt=1 fix but did not work.
Even if the OS does not freeze immediately after connected, it freezes the moment the network is used e.g. checking for software updates.
Have not tried the cable connection. It is kind of impossible to set up one.
All info below were taken from Ubuntu with wireless disconnected. This thread is prepared on Windows.
1) Machine Brand and Model (PC/Laptop)
Code:
This is a custom built desktop PC.
Motherboard -- Asrock N68-S3 UCC
CPU -- AMD Phenom 2 X4 AM3 3.3 GHz
GPU -- MSI ATI Radeon HD 5450 1GB
RAM -- 8GB DDR3 1333
HDD -- 750GB SATA2 7200RPM, 80GB IDE 7200RPM (<---Ubuntu partition with 8GB swap)
PCI Wireless card -- TP-LINK TL-WN851ND
2) Wireless Brand, Model and Wireless Chipset:
Code:
xxxxx@asdf:~$ sudo lspci
00:00.0 RAM memory: NVIDIA Corporation MCP61 Host Bridge (rev a1)
00:01.0 ISA bridge: NVIDIA Corporation MCP61 LPC Bridge (rev a2)
00:01.1 SMBus: NVIDIA Corporation MCP61 SMBus (rev a2)
00:01.2 RAM memory: NVIDIA Corporation MCP61 Memory Controller (rev a2)
00:02.0 USB controller: NVIDIA Corporation MCP61 USB 1.1 Controller (rev a3)
00:02.1 USB controller: NVIDIA Corporation MCP61 USB 2.0 Controller (rev a3)
00:04.0 PCI bridge: NVIDIA Corporation MCP61 PCI bridge (rev a1)
00:05.0 Audio device: NVIDIA Corporation MCP61 High Definition Audio (rev a2)
00:06.0 IDE interface: NVIDIA Corporation MCP61 IDE (rev a2)
00:07.0 Bridge: NVIDIA Corporation MCP61 Ethernet (rev a2)
00:08.0 IDE interface: NVIDIA Corporation MCP61 SATA Controller (rev a2)
00:08.1 IDE interface: NVIDIA Corporation MCP61 SATA Controller (rev a2)
00:09.0 PCI bridge: NVIDIA Corporation MCP61 PCI Express bridge (rev a2)
00:0b.0 PCI bridge: NVIDIA Corporation MCP61 PCI Express bridge (rev a2)
00:0c.0 PCI bridge: NVIDIA Corporation MCP61 PCI Express bridge (rev a2)
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
01:08.0 Network controller: Atheros Communications Inc. AR9227 Wireless Network Adapter (rev 01)
02:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cedar PRO [Radeon HD 5450]
02:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Cedar HDMI Audio [Radeon HD 5400/6300 Series]
Code:
xxxxx@asdf:~$ sudo lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 046d:081b Logitech, Inc. Webcam C310
Bus 002 Device 002: ID 046d:c52e Logitech, Inc.
Code:
xxxxx@asdf:~$ lspci -nn | grep 'Atheros'
01:08.0 Network controller [0280]: Atheros Communications Inc. AR9227 Wireless Network Adapter [168c:002d] (rev 01)
3) Check interface:
Code:
xxxxx@asdf:~$ sudo ifconfig
eth0 Link encap:Ethernet HWaddr 00:25:22:d4:72:93
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)
Interrupt:44 Base address:0x2000
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:256 errors:0 dropped:0 overruns:0 frame:0
TX packets:256 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:20704 (20.7 KB) TX bytes:20704 (20.7 KB)
wlan0 Link encap:Ethernet HWaddr f4:ec:38:db:dd:55
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)
Code:
xxxxx@asdf:~$ sudo iwconfig
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
eth0 no wireless extensions.
Code:
xxxxx@asdf:~$ iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
4) check for modules:
Code:
xxxxx@asdf:~$ lsmod
Module Size Used by
dm_crypt 23125 1
snd_hda_codec_hdmi 32474 1
snd_hda_codec_via 51398 1
arc4 12529 2
rfcomm 47604 0
bnep 18281 2
bluetooth 180104 10 rfcomm,bnep
joydev 17693 0
psmouse 87603 0
ppdev 17113 0
snd_hda_intel 33773 5
snd_usb_audio 122982 1
snd_hda_codec 127706 3 snd_hda_codec_hdmi,snd_hda_codec_via,snd_hda_intel
snd_pcm 97188 4 snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec
snd_hwdep 13668 2 snd_usb_audio,snd_hda_codec
snd_usbmidi_lib 25395 1 snd_usb_audio
snd_seq_midi 13324 0
snd_rawmidi 30748 2 snd_usbmidi_lib,snd_seq_midi
ath9k 132390 0
snd_seq_midi_event 14899 1 snd_seq_midi
mac80211 506816 1 ath9k
snd_seq 61896 2 snd_seq_midi,snd_seq_midi_event
snd_timer 29990 2 snd_pcm,snd_seq
snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq
ath9k_common 14053 1 ath9k
ath9k_hw 411112 2 ath9k,ath9k_common
ath 24067 3 ath9k,ath9k_common,ath9k_hw
parport_pc 32866 1
snd 78855 24 snd_hda_codec_hdmi,snd_hda_codec_via,snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_pcm,snd_hwdep,snd_usbmidi_lib,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
cfg80211 205544 3 ath9k,mac80211,ath
uvcvideo 72627 0
videodev 98259 1 uvcvideo
mac_hid 13253 0
serio_raw 13211 0
v4l2_compat_ioctl32 17128 1 videodev
edac_core 53746 0
k10temp 13166 0
soundcore 15091 1 snd
edac_mce_amd 23709 0
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
i2c_nforce2 13058 0
lp 17799 0
parport 46562 3 ppdev,parport_pc,lp
usbhid 47199 0
hid 99559 1 usbhid
radeon 804372 3
ttm 76949 1 radeon
drm_kms_helper 46978 1 radeon
drm 242038 5 radeon,ttm,drm_kms_helper
i2c_algo_bit 13423 1 radeon
sata_nv 32286 0
forcedeth 63460 0
pata_amd 14118 2
Code:
xxxxx@asdf:~$ lsmod | grep "ath"
ath9k 132390 0
mac80211 506816 1 ath9k
ath9k_common 14053 1 ath9k
ath9k_hw 411112 2 ath9k,ath9k_common
ath 24067 3 ath9k,ath9k_common,ath9k_hw
cfg80211 205544 3 ath9k,mac80211,ath
5) Kernel boot messages
Code:
alfred@asdf:~$ dmesg | grep "ath"
[ 16.213970] ath9k 0000:01:08.0: PCI INT A -> Link[LNKA] -> GSI 18 (level, low) -> IRQ 18
[ 16.517723] ath: EEPROM regdomain: 0x809c
[ 16.517727] ath: EEPROM indicates we should expect a country code
[ 16.517728] ath: doing EEPROM country->regdmn map search
[ 16.517729] ath: country maps to regdmn code: 0x52
[ 16.517731] ath: Country alpha2 being used: CN
[ 16.517732] ath: Regpair used: 0x52
[ 16.524064] ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
[ 16.524534] Registered led device: ath9k-phy0
[ 16.585557] type=1400 audit(1335479733.136:11): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/mission-control-5" pid=943 comm="apparmor_parser"
[ 40.175779] type=1400 audit(1335479756.724:24): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/telepathy/mission-control-5" name="/usr/share/gvfs/remote-volume-monitors/" pid=2010 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
When I did just dmesg as suggested, there were loads of lines. I couldn't even select them properly to copy. So instead, I decided to get msg only related to "ath".
If you do need all of them, let me know how to output them into a text file from terminal. It'd be easier for me that way.
6) Network configuration
Code:
xxxxx@asdf:~$ sudo lshw -C network
*-network
description: Wireless interface
product: AR9227 Wireless Network Adapter
vendor: Atheros Communications Inc.
physical id: 8
bus info: pci@0000:01:08.0
logical name: wlan0
version: 01
serial: f4:ec:38:db:dd:55
width: 32 bits
clock: 66MHz
capabilities: pm bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.2.0-23-generic firmware=N/A latency=168 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:18 memory:fbef0000-fbefffff
7) Scan for networks:
Code:
xxxxx@asdf:~$ iwlist scan
lo Interface doesn't support scanning.
wlan0 No scan results
eth0 Interface doesn't support scanning.
Eight) Ubuntu Version:
Code:
xxxxx@asdf:~$ lsb_release -d
Description: Ubuntu 12.04 LTS
9) Kernel/architecture (including 32 vs. 64 bit):
Code:
xxxxx@asdf:~$ uname -mr
3.2.0-23-generic x86_64
10) Restarting the network:
Code:
xxxxx@asdf:~$ sudo /etc/init.d/networking restart
* Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces
* Reconfiguring network interfaces...
Advice, suggestion and discussion are welcome. This is a fairly powerful machine (at least imho) and I am quite anxious to run Ubuntu on it. So, please help
Should you require any further info, do let me know.
Thank you very much. Best regards.
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