On 24 March 2017 at 16:46, Rick Stevens <ricks(a)alldigital.com> wrote:
On 03/23/2017 05:40 PM, Ian Malone wrote:
> On 12 January 2017 at 05:04, Chris Murphy <lists(a)colorremedies.com> wrote:
>> Damn strange.
>>
>> The computer is in a static location for all tests. This is still using
>> iperf in all cases, but abbreviated since I'm copying by hand. Each test is
>> about five seconds apart.
>>
>> Fedora 25 live
>> 58 Mbit/sec
>> 61
>> 41
>>
>> Fedora 24 live
>> 54 Mbit/sec
>> 46
>> 38
>> 65
>>
>> Fedora 25 installed
>> 29
>> 42
>> 38
>> 38
>> co
>> There are a total of three wireless devices connected to this AP. All are
>> connected at the same time but only the test client is actively being used
>> when the testing is happening. But it's in an apartment building, with
>> hundreds of units all of which have wireless APs.
>>
>
> Did anyone get to the bottom of this? I installed F25 a couple of
> weeks ago and network performance is noticeably poorer on this
> machine. When browsing the internet, or particularly on Ajax based
> sites like gmail or google search connections seem to just drop. The
> previous Fedora that was on this machine (23 I think) was fine, and my
> laptop (still on an older Fedora) and other devices have not
> experienced any change. Looking in journalctl as root I see frequent
> renegotiation with the AP, e.g.:
> Mar 24 00:21:29 atlas wpa_supplicant[864]: wlp2s0: SME: Trying to
> authenticate with xx:xx:xx:xx:xx:xx (SSID='X' freq=5200 MHz)
> Mar 24 00:21:29 atlas kernel: wlp2s0: disconnect from AP
> xx:xx:xx:xx:xx:xx for new auth to 00:a4:23:17:18:e5
> Mar 24 00:21:29 atlas kernel: wlp2s0: authenticate with xx:xx:xx:xx:xx:xx
> Mar 24 00:21:29 atlas kernel: wlp2s0: send auth to xx:xx:xx:xx:xx:xx (try 1/3)
> Mar 24 00:21:29 atlas kernel: wlp2s0: authenticated
> Mar 24 00:21:29 atlas kernel: wlp2s0: associate with xx:xx:xx:xx:xx:xx (try 1/3)
> Mar 24 00:21:29 atlas wpa_supplicant[864]: wlp2s0: Trying to associate
> with xx:xx:xx:xx:xx:xx (SSID='X' freq=5200 MHz)
> While the machine is supposedly connected.
>
> There's also this,
> Mar 24 00:21:29 atlas systemd-udevd[5658]: Process '/usr/sbin/crda'
> failed with exit code 249.
> which can't be a good sign.
The first things I'd do is see what hardware you actually have:
# lspci | grep -i wireless
Then see which driver your wifi is using via
# ethtool -i wlp2s0
See if perhaps there's another driver or perhaps newer firmware you can
use for that chipset. Sometimes the kernel or udev don't necessarily
make the right decisions about which driver to use. My F25 machines with
wifi are both using the iwlwifi driver (both use Intel wireless chips):
(Desktop)
# lspci | grep -i wireless
04:00.0 Network controller: Intel Corporation Wireless 3165 (rev 81)
#ethtool -i wlp4s0
driver: iwlwifi
version: 4.9.13-201.fc25.x86_64
firmware-version: 22.361476.0
...
(Laptop)
# lspci | grep -i wireless
01:00.0 Network controller: Intel Corporation Centrino Wireless-N 1030
[Rainbow Peak] (rev 34)
# ethtool -i wlan0
driver: iwlwifi
version: 4.9.14-200.fc25.x86_64
firmware-version: 18.168.6.1
...
I've had no issues with performance or the ability to stay connected
and the laptop goes LOTS of places with me.
The hardware hasn't changed, and was picked specifically because it
has good (and long standing) linux support:
02:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network
Adapter (rev 01)
driver: ath9k
version: 4.9.14-200.fc25.x86_64
firmware-version: N/A
expansion-rom-version:
bus-info: 0000:02:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
Which is the correct driver, unless there's been a regression. It
seems like key rotation or something is not taking place smoothly. I
see quite a lot of this while it's connected (journactl output, lines
may be truncated):
Mar 24 22:46:13 atlas wpa_supplicant[898]: wlp2s0:
CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Mar 24 22:46:13 atlas kde5-nm-connection-editor[2310]:
networkmanager-qt: virtual void
NetworkManager::DevicePrivate::propertyChanged(co
Mar 24 22:46:13 atlas wpa_supplicant[898]: wlp2s0: Associated with
xx:xx:xx:xx:xx:xx
Mar 24 22:46:13 atlas kdeinit5[1192]: networkmanager-qt: virtual void
NetworkManager::DevicePrivate::propertyChanged(const QString&, con
Mar 24 22:46:13 atlas wpa_supplicant[898]: wlp2s0:
CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
Mar 24 22:46:13 atlas kdeinit5[1192]: networkmanager-qt: virtual void
NetworkManager::DevicePrivate::propertyChanged(const QString&, con
Mar 24 22:46:13 atlas wpa_supplicant[898]: wlp2s0:
CTRL-EVENT-REGDOM-CHANGE init=USER type=COUNTRY alpha2=GB
In my case might be related to
https://bugs.mageia.org/show_bug.cgi?id=18935 going to try with
regdomain set to GB for a while and see if it helps.
--
imalone
http://ibmalone.blogspot.co.uk