[Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

Balooga · 2015-05-03 15:56:48

Hello arch community,

I just installed Arch a week ago. I have a problem with an unstable and slow wifi connection.
Just now the Wifi didn't work at all (Even though I was connected and had an okay signal strength), and I had to reboot the Laptop. Often the Internet is very slow for short periods of time (especially bothersome when streaming), occasionally the Connection aborts fully. It seems that the connection times out for short periods of time and then works fine again after ~30 s.

iwconfig-output:

wlp3s0    IEEE 802.11bgn  ESSID:"XXXXXXXXX"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: XX:XX:XX:XX:XX:XX   
          Bit Rate=90 Mb/s   Tx-Power=16 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=47/70  Signal level=-63 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:78  Invalid misc:483   Missed beacon:0

rate is set to auto, enabling "rts" and "frag" didn't change a thing

I'm using a Lenovo IdeaPad U310.

Any Idea is welcome. If you need additional information, just say and I will provide.

best regards

Last edited by Balooga (2015-05-10 15:51:30)

Head_on_a_Stick · 2015-05-03 16:02:00

Try using some of the /etc/modprobe.d/iwlwifi.conf tricks detailed in this thread (step 2):
http://forums.debian.net/viewtopic.php? … 6&p=576226

The "options iwlwifi swcrypto=1" is probably the one most likely to help.

You can check which configuration options are available (and the default settings) by using:

# modinfo iwlwifi

ewaller · 2015-05-03 16:04:23

No answers yet, but looking for more information.
Which wireless chipset are you using?
What are you using to manage the connection? (wicd, netctl, NetworkManager)
What network related things have you enabled? Check with systemctl. Ensure that only one thing is trying to control the hardware. You may want to just post the output of systemctl
What make and model is your router/access point? Have you tried a different access point?

Balooga · 2015-05-03 19:39:24

I added the option "iwlwifi swcrypto=1" to the iwlfwifi.conf. And started expermienting a bit with other values.
The connection is still much slower than it should be (with windows it works fine, so it is no hardware issue). I can't say if there is an improvement in stability yet.

My wireless chipset is the Intel Centrino Wireless-N 2230 (rev c4). I use NetworkManager to manage connections.

systemctl outputs three lines that refer to either the pci-adress of the wifi-card or the name of the wifi-device (wlp3s0)

sys-devices-pci0000:00-0000:00:1c.2-0000:03:00.0-ieee80211-phy0-rfkill0.device loaded active plugged   /sys/devices/pci0000:00/0000
sys-devices-pci0000:00-0000:00:1c.2-0000:03:00.0-net-wlp3s0.device loaded active plugged   Centrino Wireless-N 2230 (BG
(...)
sys-subsystem-net-devices-wlp3s0.device loaded active plugged   Centrino Wireless-N 2230 (BG

not sure what the fist line is.

here is the whole output (except the hard drive and usb drive)

UNIT                        LOAD   ACTIVE SUB       DESCRIPTION
proc-sys-fs-binfmt_misc.automount loaded active running   Arbitrary Executable File Fo
sys-devices-pci0000:00-0000:00:02.0-backlight-acpi_video0.device loaded active plugged   /sys/devices/pci0000:00/0000
sys-devices-pci0000:00-0000:00:14.0-usb1-1\x2d4-1\x2d4:1.0-bluetooth-hci0-rfkill3.device loaded active plugged   /sys/devices/pci0000:00/0000
sys-devices-pci0000:00-0000:00:14.0-usb1-1\x2d4-1\x2d4:1.0-bluetooth-hci0.device loaded active plugged   /sys/devices/pci0000:00/0000
(... usb drive)
sys-devices-pci0000:00-0000:00:1b.0-sound-card0.device loaded active plugged   7 Series/C210 Series Chipset
sys-devices-pci0000:00-0000:00:1c.1-0000:02:00.0-net-enp2s0.device loaded active plugged   RTL8101E/RTL8102E PCI Expres
sys-devices-pci0000:00-0000:00:1c.2-0000:03:00.0-ieee80211-phy0-rfkill0.device loaded active plugged   /sys/devices/pci0000:00/0000
sys-devices-pci0000:00-0000:00:1c.2-0000:03:00.0-net-wlp3s0.device loaded active plugged   Centrino Wireless-N 2230 (BG
sys-devices-pci0000:00-0000:00:1f.0-PNP0C09:00-VPC2004:00-rfkill-rfkill1.device loaded active plugged   /sys/devices/pci0000:00/0000
sys-devices-pci0000:00-0000:00:1f.0-PNP0C09:00-VPC2004:00-rfkill-rfkill2.device loaded active plugged   /sys/devices/pci0000:00/0000
(... hard drive)
sys-devices-platform-serial8250-tty-ttyS0.device loaded active plugged   /sys/devices/platform/serial
sys-devices-platform-serial8250-tty-ttyS1.device loaded active plugged   /sys/devices/platform/serial
sys-devices-platform-serial8250-tty-ttyS2.device loaded active plugged   /sys/devices/platform/serial
sys-devices-platform-serial8250-tty-ttyS3.device loaded active plugged   /sys/devices/platform/serial
sys-devices-platform-thinkpad_acpi-sound-card29.device loaded active plugged   /sys/devices/platform/thinkp
sys-module-configfs.device  loaded active plugged   /sys/module/configfs
sys-module-fuse.device      loaded active plugged   /sys/module/fuse
sys-subsystem-bluetooth-devices-hci0.device loaded active plugged   /sys/subsystem/bluetooth/dev
sys-subsystem-net-devices-enp2s0.device loaded active plugged   RTL8101E/RTL8102E PCI Expres
sys-subsystem-net-devices-wlp3s0.device loaded active plugged   Centrino Wireless-N 2230 (BG
sys-subsystem-rfkill-devices-rfkill0.device loaded active plugged   /sys/subsystem/rfkill/device
sys-subsystem-rfkill-devices-rfkill1.device loaded active plugged   /sys/subsystem/rfkill/device
sys-subsystem-rfkill-devices-rfkill2.device loaded active plugged   /sys/subsystem/rfkill/device
sys-subsystem-rfkill-devices-rfkill3.device loaded active plugged   /sys/subsystem/rfkill/device
-.mount                     loaded active mounted   /
dev-hugepages.mount         loaded active mounted   Huge Pages File System
dev-mqueue.mount            loaded active mounted   POSIX Message Queue File Sys
proc-sys-fs-binfmt_misc.mount loaded active mounted   Arbitrary Executable File Fo
run-user-1000-gvfs.mount    loaded active mounted   /run/user/1000/gvfs
run-user-1000.mount         loaded active mounted   /run/user/1000
run-user-620.mount          loaded active mounted   /run/user/620
sys-fs-fuse-connections.mount loaded active mounted   FUSE Control File System
sys-kernel-config.mount     loaded active mounted   Configuration File System
sys-kernel-debug.mount      loaded active mounted   Debug File System
tmp.mount                   loaded active mounted   Temporary Directory
org.cups.cupsd.path         loaded active running   CUPS Scheduler
systemd-ask-password-console.path loaded active waiting   Dispatch Password Requests t
systemd-ask-password-plymouth.path loaded active waiting   Forward Password Requests to

I didn't try another access point yet. The router is a FRITZ!Box 6340 Cable.

Last edited by Balooga (2015-05-03 19:42:29)

Balooga · 2015-05-05 15:31:13

Thanks for the help so far.
I still fail to find a pattern in the instabilities. Sometimes the connection is really good, sometimes there is no connection at all. And everything in between.

Yesterday I couldn't connect to my router, it looked like I have a connection, but I couldn't ping the router. Only a reboot could help. I use "iwlwifi swcrypto=1" now. But no other options.

Is there a possibility to log the activities of the driver software? And can I log the state of my connection?

regards
Balooga

Head_on_a_Stick · 2015-05-05 19:13:22

Balooga wrote:

Is there a possibility to log the activities of the driver software? And can I log the state of my connection?

https://wiki.archlinux.org/index.php/Systemd#Journal

Balooga · 2015-05-10 15:49:37

The Problem somehow solved itself. I have no Idea why.

Thank you for the support!

kenan7 · 2021-09-30 19:24:46

How did you solve it? I'm having the same problem.

Arch Linux

#1 2015-05-03 15:56:48

[Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

#2 2015-05-03 16:02:00

Re: [Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

#3 2015-05-03 16:04:23

Re: [Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

#4 2015-05-03 19:39:24

Re: [Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

#5 2015-05-05 15:31:13

Re: [Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

#6 2015-05-05 19:13:22

Re: [Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

#7 2015-05-10 15:49:37

Re: [Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

#8 2021-09-30 19:24:46

Re: [Solved] Unstable and slow Internet Intel Centrino Wireless-N 2230

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