Bug 1242161

Summary:	iwl7260 packets are dropped
Product:	[Fedora] Fedora	Reporter:	Vojtech Juranek <vjuranek>
Component:	iwlwifi-firmware	Assignee:	Orphan Owner <extras-orphan>
Status:	CLOSED EOL	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	22	CC:	djuran, extras-orphan, jgrulich, linville, sgraf
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-07-19 19:14:23 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Vojtech Juranek 2015-07-11 18:51:21 UTC

Description of problem:
On my laptop Lenovo W541, I'm able to connect to AP, but the connection is very unreliable, e.g. package installation/upgrade fails, connection to VPN fails etc. Connection to AP is not dropped, but there's bit packet loss.


Version-Release number of selected component (if applicable):
iwl firmware: iwlwifi-7260-12.ucode (iwl7260-firmware-25.17.12.0-53)
network controller: Intel Corporation Wireless 7260 (rev bb)
kernel: 4.0.7-300


How reproducible:
Always

Steps to Reproduce:
1. Connect to AP, after a while, connection is very unreliable and packets are dropped

Actual results:
Packets are dropped, wifi is almost unusable (e.g. cannot connect to VPN)

Expected results:
Wifi works without any issue

Additional info:
When trying to ping some machine, packet loss is from 20% to 100%, while on another machine connected to the same AP is 0%.

Part of dmesg output:

Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  Auto-activating connection
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: starting connection 
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) scheduled...
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) started...
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  NetworkManager state is now CONNECTING
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 2 of 5 (Device Configure) scheduled...
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) complete.
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 2 of 5 (Device Configure) starting...
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): device state change: prepare -> config (reason 'none') [40 50 0]
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: (wifi) access point 'pavouk' has security, but secrets are required.
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): device state change: config -> need-auth (reason 'none') [50 60 0]
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 2 of 5 (Device Configure) complete.
Jul 11 20:10:29 dhcp-10-40-4-225 NetworkManager[1204]: <warn>  Couldn't disconnect supplicant interface: This interface is not connected.
Jul 11 20:10:29 dhcp-10-40-4-225 org.kde.kwalletd5: Application ' "kded5" ' using kwallet without parent window!
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) scheduled...
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) started...
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): device state change: need-auth -> prepare (reason 'none') [60 40 0]
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 2 of 5 (Device Configure) scheduled...
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 1 of 5 (Device Prepare) complete.
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 2 of 5 (Device Configure) starting...
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): device state change: prepare -> config (reason 'none') [40 50 0]
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: (wifi) connection has security, and secrets exist.  No new secrets needed.
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  Config: added 'ssid' value 
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  Config: added 'scan_ssid' value '1'
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  Config: added 'key_mgmt' value 'WPA-PSK'
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  Config: added 'psk' value '<omitted>'
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  Config: added 'proto' value 'WPA RSN'
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): Activation: Stage 2 of 5 (Device Configure) complete.
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <warn>  Couldn't disconnect supplicant interface: This interface is not connected.
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  Config: set interface ap_scan to 1
Jul 11 20:10:34 dhcp-10-40-4-225 kernel: wlp3s0: authenticate with 00:22:b0:ab:16:00
Jul 11 20:10:34 dhcp-10-40-4-225 kernel: wlp3s0: send auth to 00:22:b0:ab:16:00 (try 1/3)
Jul 11 20:10:34 dhcp-10-40-4-225 NetworkManager[1204]: <info>  (wlp3s0): supplicant interface state: scanning -> associating
Jul 11 20:10:34 dhcp-10-40-4-225 kernel: wlp3s0: authenticated
Jul 11 20:10:34 dhcp-10-40-4-225 kernel: iwlwifi 0000:03:00.0 wlp3s0: disabling HT as WMM/QoS is not supported by the AP
Jul 11 20:10:34 dhcp-10-40-4-225 kernel: iwlwifi 0000:03:00.0 wlp3s0: disabling VHT as WMM/QoS is not supported by the AP
Jul 11 20:10:34 dhcp-10-40-4-225 kernel: wlp3s0: associate with 00:22:b0:ab:16:00 (try 1/3)
Jul 11 20:10:34 dhcp-10-40-4-225 kernel: wlp3s0: RX AssocResp from 00:22:b0:ab:16:00 (capab=0x431 status=0 aid=2)
Jul 11 20:10:34 dhcp-10-40-4-225 kernel: wlp3s0: associated

Comment 1 Vojtech Juranek 2015-07-13 08:31:32 UTC

Some more info about the driver from ethtool:

driver: iwlwifi
version: 4.0.7-300.fc22.x86_64
firmware-version: 25.17.12.0
bus-info: 0000:03:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no

Comment 2 Vojtech Juranek 2015-07-13 14:33:19 UTC

After few discussions with colleagues which have same HW, it seems that this issue happens only on some APs while on some others works fine.

Comment 3 Fedora End Of Life 2016-07-19 19:14:23 UTC

Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.