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Martin Hope
sassy.geek
Asked: 2018-07-01 23:22:41 +0800 CST
  • 6

my wifi drops after some time and requires reboot to work again ( Centrino Wireless-N 1030 [Rainbow Peak])

similar question was posted by me for 14.04

intel centrino wireless n 1030 wireless drop after reboot Ubuntu 14.04

sudo lshw -C network gives 

 *-network    

       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: enp5s0
       version: 06
       serial: 24:b6:fd:27:e1:b8
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-2.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:30 ioport:e000(size=256) memory:f1104000-f1104fff memory:f1100000-f1103fff 
 *-network

       description: Wireless interface
       product: Centrino Wireless-N 1030 [Rainbow Peak]


       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:09:00.0
       logical name: wlp9s0
       version: 34
       serial: 4c:eb:42:32:c2:2e
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.13.0-45-generic firmware=18.168.6.1 ip=192.168.1.31 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:34 memory:f7e00000-f7e01fff

have edited the /etc/modpobe.d/iwlwifi.conf to add the line 

options iwlwifi 11n_disable=1 iwlwifi bt_coex_active=0

didnt work

have checked /lib/firmware for the file iwlwifi-6000g2b-6

it exists .( this was from https://www.intel.in/content/www/in/en/support/articles/000005511/network-and-i-o/wireless-networking.html)

dmesg | grep iwl gives

[   14.721093] iwlwifi: unknown parameter 'iwlwifi' ignored
[   14.974997] iwlwifi 0000:09:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[   14.998377] iwlwifi 0000:09:00.0: CONFIG_IWLWIFI_DEBUG disabled
[   14.998380] iwlwifi 0000:09:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[   14.998382] iwlwifi 0000:09:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[   14.998385] iwlwifi 0000:09:00.0: Detected Intel(R) Centrino(R) Wireless-N 1030 BGN, REV=0xB0
[   15.035360] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[   16.149840] iwlwifi 0000:09:00.0 wlp9s0: renamed from wlan0
[   22.513003] iwlwifi 0000:09:00.0: Radio type=0x2-0x2-0x1
[   22.615238] iwlwifi 0000:09:00.0: Radio type=0x2-0x2-0x1

sudo iwconfig gives

lo        no wireless extensions.

wlp9s0    IEEE 802.11  ESSID:"HTC Portable Hotspot 4AEF"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 80:7A:BF:B9:8F:D5   
          Bit Rate=54 Mb/s   Tx-Power=15 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=70/70  Signal level=-38 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:120   Missed beacon:0

power management is disabled

sudo iwlist scan | egrep -i 'ssid|cipher' gives (refer)

Wifi keeps dropping on Dell XPS13 running Ubuntu 16.04, not sure how to use sudoedit on file 

enp5s0    Interface doesn't support scanning.

lo        Interface doesn't support scanning.

                    ESSID:"HTC Portable Hotspot 4AEF"
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                    ESSID:"Nokia 8"
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP

sudo service network-manager restart doesnt work

shows this after I try reconnecting

enter image description here

requires reboot required after drop

also tried the following

16.04 LTS wifi connection issues with Realtek adapter

have replaced the adapters name . since it is RTL8111/8168/8411 and adding "/" with conf file cretes problems I chose a name with out "/"

wifi drops after few hours again

I have posted the output while wifi was connected have edited this question multiple times to add all the relevant things i did but issue still persists

my kernel version is 4.15.0-24-generic

please help

edit 2: update to kernel version 4.15.0-29-generic #31~16.04.1-Ubuntu SMP doesn't solve the issue

edit 3 : have set the region to IN issue persistent

edit 4 : installed wicd-client from help.ubuntu.com/community/WICD . disconnection continues and so switched back to network manager again issue is persistent

edit 5 : took a backup and installed Windows 7 for one day , wifi worked fine implying hardware is working fine

edit6 : contacted dell support in case to be sure to know if the card was ok .they ran diagnostic and assured hard ware is working fine

edit 7 : after all the efforts , I realized that there is something missing with respect to the linux kernel itself, and so i intalled r8168-dkms via synaptic packet manager and the wifi is up since 235 minutes but again the next day drop after 30 minutes of use

edit 8 : of all the above things that I have tried edit : 7 is the most stable, how ever I am not sure of the solution as disconnection persists

edit 9 : blacklisted r8169 by following in /etc/modprobe.d/r8168-dkms.conf

# if the aliases above do not work, uncomment the following line
# to blacklist the whole r8169 module
#blacklist r8169

by uncommenting as advised to 

# if the aliases above do not work, uncomment the following line
# to blacklist the whole r8169 module
blacklist r8169

disconnection persists

edit 10 r8168 in edit 9 is for ethernet and not for wifi , from the link https://ubuntuforums.org/showthread.php?t=2391119

I did as advised, though for 18.04 but since the kernel version was same , I gave a try , didnt work !

edit 11 : as requested in the comment /etc/NetworkManager/NetworkManager.conf has 

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

edit 12 : becoming root and performing 

echo -e "[device]\nwifi.scan-rand-mac-address=0" >> /etc/NetworkManager/NetworkManager.conf && systemctl restart network-manager

doesnt help

edit 13 : now the system fails to recognize the wifi adapter

edit 14 : running the following 

dpkg-reconfigure linux-firmware
modprobe -r iwlwifi ; modprobe iwlwifi

doesn't help

edit 15 : changed the line from options iwlwifi 11n_disable=1 iwlwifi bt_coex_active=0 to

options iwlwifi 11n_disable=1 swcrypto=1` bt_coex_active=0

in /etc/modprobe.d/iwlwifi.config
does not help.

networking wireless drivers intel-wireless 16.04
Martin Hope
sassy.geek
Asked: 2017-07-16 23:05:33 +0800 CST
  • 1

My wifi suddenly stopped working even after reboot

sudo lshw -C network gives this

*-network
  description: Ethernet interface 
  product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller 
  vendor: Realtek Semiconductor Co., Ltd. 
  physical id: 0 
  bus info: pci@0000:05:00.0 
  logical name: eth0 version: 06 
  serial: 24:b6:fd:27:e1:b8 
  size: 10Mbit/s 
  capacity: 1Gbit/s 
  width: 64 bits 
  clock: 33MHz 
  capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation 
  configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-2.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s 
  resources: irq:30 ioport:e000(size=256) memory:f1104000-f1104fff memory:f1100000-f1103fff 
*-network 
   description: Ethernet interface 
   physical id: 2 
   logical name: usb0 
   serial: fa:dd:3b:86:b9:76 
   capabilities: ethernet 
   physical configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.167 link=yes multicast=yes

My wifi device is intel centrino wireless n 1030 (rainbow peak)

i tried changing the iwlwifi.conf but could not be of any help then on the website i found a download https://www.intel.in/content/www/in/en/support/network-and-i-o/wireless-networking/000005511.html

these were the instructions given To install firmware:

Copy the files into the distribution-specific firmware directory, /lib/firmware.
If the directory does not work, consult your distribution documentation.
If you configure the kernel yourself, make sure firmware loading is enabled.

please note there are other two files than the iwlwifi-6000g2b-5.ucode file which does not require to be copied (one is license and the other is readme) and then it was up again

however a new problem was encountered wifi dropping after few hours

dmesg | grep iwl gives the follwoing 

[   20.654434] iwlwifi 0000:09:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[   21.575195] iwlwifi 0000:09:00.0: CONFIG_IWLWIFI_DEBUG disabled
[   21.575199] iwlwifi 0000:09:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[   21.575200] iwlwifi 0000:09:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[   21.575203] iwlwifi 0000:09:00.0: Detected Intel(R) Centrino(R) Wireless-N 1030 BGN, REV=0xB0
[   21.575256] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[   21.595943] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[   27.574648] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[   27.581175] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[   27.581262] iwlwifi 0000:09:00.0: Radio type=0x2-0x2-0x1
[   27.648799] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[   27.655322] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[   27.655409] iwlwifi 0000:09:00.0: Radio type=0x2-0x2-0x1
[ 2240.088860] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[ 2240.095386] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[ 2240.095475] iwlwifi 0000:09:00.0: Radio type=0x2-0x2-0x1
[ 2240.163097] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[ 2240.169634] iwlwifi 0000:09:00.0: L1 Disabled - LTR Disabled
[ 2240.169729] iwlwifi 0000:09:00.0: Radio type=0x2-0x2-0x1

i aslo have refrred to the bug reporting https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1420935 have tried the following Create a file named: /etc/modprobe.d/wifi_bug.conf

Add the following lines to the file: options iwlmvm power_scheme=1 options iwlwifi bt_coex_active=N swcrypto=1 11n_disable=1

Set the file's ownership the same as other files in that folder.

Reboot.

worked for a while , problem persists as of now the kernel version i am using is 4.4.0-130-generic

wireless
Martin Hope
sassy.geek
Asked: 2016-11-26 07:46:36 +0800 CST
  • 5

The fix to the error in Firefox showing libavcodec may be vulnerable is contained in the following link, however the vulnerability referred to in the notification is not exactly described.

enter image description here

The libavcodec notification that Firefox displays does not make sense in situations where the reported vulnerability may not even exist because libavcodec is not installed. If the libavcodec vulnerability does not exist, the notification may be advising to install a supported version of libavcodec, but even so it does not explain why it should be installed.

What vulnerability is the Firefox notification reporting about? How is installing a libavcodec package that wasn't installed before from a PPA equivalent to fixing a vulnerability in libavcodec, and not equivalent to putting the cart before the horse?

firefox