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Bug#780920: marked as done (firmware-iwlwifi: iwlwifi-7260-8.ucode causes frequent network disconnections problems)

Your message dated Sun, 18 Sep 2016 03:46:34 +0100
with message-id <1474166794.2621.98.camel@decadent.org.uk>
and subject line Re: firmware-iwlwifi: iwlwifi-7260-8.ucode causes frequent network disconnections problems
has caused the Debian Bug report #780920,
regarding firmware-iwlwifi: iwlwifi-7260-8.ucode causes frequent network disconnections problems
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
780920: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780920
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: firmware-iwlwifi
Version: 0.43
Severity: important

Dear Maintainer,

I use wifi with my Lenovo X240 with the Intel network controller 7260. Just
below, the lspci command output :
03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b)
        Subsystem: Intel Corporation Wireless-N 7260
        Flags: bus master, fast devsel, latency 0, IRQ 63
        Memory at e0400000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [c8] Power Management version 3
        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [40] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Device Serial Number 7c-7a-91-ff-ff-05-6b-e4
        Capabilities: [14c] Latency Tolerance Reporting
        Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014
<?>
        Kernel driver in use: iwlwifi

I am running Debian Jessie x86_64. I am connecting to my wireless ADSL router
(Technicolor TG789vn v3) with this options (iwconfig output) :
wlan0     IEEE 802.11bgn  ESSID:"ManaBOX8A99EB"
          Mode:Managed  Frequency:2.412 GHz  Access Point: 9C:97:26:8A:99:EB
          Bit Rate=1 Mb/s   Tx-Power=22 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=70/70  Signal level=-34 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:71   Missed beacon:0

The Bit Rate alternate between 1 and 70 Mb/s.

My issue : frequent disconnections (every 20/30mn) with complete network
controller loss. I disable and enable wifi controller with the hotkey, and it
works again (for 20/40mn).

This is an extract of my network manager log (/var/log/daemon.log) of this
issue :
Mar 17 10:11:00 x240 wpa_supplicant[1145]: wlan0: CTRL-EVENT-DISCONNECTED
bssid=9c:97:26:8a:99:eb reason=4 locally_generated=1
Mar 17 10:11:00 x240 NetworkManager[748]: <warn> Connection disconnected
(reason -4)
Mar 17 10:11:00 x240 wpa_supplicant[1145]: wlan0: CTRL-EVENT-REGDOM-CHANGE
init=CORE type=WORLD
Mar 17 10:11:00 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: completed -> disconnected
Mar 17 10:11:00 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: disconnected -> scanning
Mar 17 10:11:01 x240 wpa_supplicant[1145]: wlan0: SME: Trying to authenticate
with 9c:97:26:8a:99:eb (SSID='ManaBOX8A99EB' freq=2437 MHz)
Mar 17 10:11:01 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: scanning -> authenticating
Mar 17 10:11:01 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: authenticating -> disconnected
Mar 17 10:11:02 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: disconnected -> scanning
Mar 17 10:11:03 x240 wpa_supplicant[1145]: wlan0: SME: Trying to authenticate
with 9c:97:26:8a:99:eb (SSID='ManaBOX8A99EB' freq=2437 MHz)
Mar 17 10:11:03 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: scanning -> authenticating
Mar 17 10:11:03 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: authenticating -> disconnected
Mar 17 10:11:04 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: disconnected -> scanning
Mar 17 10:11:05 x240 wpa_supplicant[1145]: wlan0: SME: Trying to authenticate
with 9c:97:26:8a:99:eb (SSID='ManaBOX8A99EB' freq=2437 MHz)
Mar 17 10:11:05 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: scanning -> authenticating
Mar 17 10:11:05 x240 wpa_supplicant[1145]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED
id=0 ssid="ManaBOX8A99EB" auth_failures=1 duration=10 reason=CONN_FAILED
Mar 17 10:11:05 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: authenticating -> disconnected
Mar 17 10:11:10 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: disconnected -> scanning
Mar 17 10:11:15 x240 NetworkManager[748]: <warn> (wlan0): link timed out.
Mar 17 10:11:15 x240 NetworkManager[748]: <info> (wlan0): device state change:
activated -> failed (reason 'ssid-not-found') [100 120 53]
Mar 17 10:11:15 x240 NetworkManager[748]: <info> NetworkManager state is now
CONNECTED_LOCAL
Mar 17 10:11:15 x240 NetworkManager[748]: <info> NetworkManager state is now
DISCONNECTED
Mar 17 10:11:15 x240 NetworkManager[748]: <warn> Activation (wlan0) failed for
connection 'ManaBOX8A99EB'
Mar 17 10:11:15 x240 dbus[754]: [system] Activating via systemd: service
name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-
dispatcher.service'
Mar 17 10:11:15 x240 NetworkManager[748]: <info> (wlan0): device state change:
failed -> disconnected (reason 'none') [120 30 0]
Mar 17 10:11:15 x240 NetworkManager[748]: <info> (wlan0): deactivating device
(reason 'none') [0]
Mar 17 10:11:15 x240 dbus[754]: [system] Successfully activated service
'org.freedesktop.nm_dispatcher'
Mar 17 10:11:15 x240 nm-dispatcher: Dispatching action 'down' for wlan0
Mar 17 10:11:15 x240 NetworkManager[748]: <info> (wlan0): canceled DHCP
transaction, DHCP client pid 2123
Mar 17 10:11:15 x240 avahi-daemon[1008]: Withdrawing address record for
fe80::7e7a:91ff:fe05:6be4 on wlan0.
Mar 17 10:11:15 x240 avahi-daemon[1008]: Leaving mDNS multicast group on
interface wlan0.IPv6 with address fe80::7e7a:91ff:fe05:6be4.
Mar 17 10:11:15 x240 avahi-daemon[1008]: Interface wlan0.IPv6 no longer
relevant for mDNS.
Mar 17 10:11:15 x240 avahi-daemon[1008]: Withdrawing address record for
192.168.1.81 on wlan0.
Mar 17 10:11:15 x240 avahi-daemon[1008]: Leaving mDNS multicast group on
interface wlan0.IPv4 with address 192.168.1.81.
Mar 17 10:11:15 x240 avahi-daemon[1008]: Interface wlan0.IPv4 no longer
relevant for mDNS.
Mar 17 10:11:15 x240 NetworkManager[748]: <warn> Couldn't disconnect supplicant
interface: This interface is not connected.
Mar 17 10:11:15 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: scanning -> inactive
Mar 17 10:11:16 x240 NetworkManager[748]: <info> (wlan0): supplicant interface
state: inactive -> scanning

I found similar issues on the Ubuntu Launchpad, the #1349108
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1349108) and #1293569
(https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1293569). So I
apply the "fix", I renamed the iwlwifi-7260-8.ucode to iwlwifi-7260-8.backup in
/lib/firmware.

This "fix" works for me.

Does there is a better solution ?

Thank you.



-- System Information:
Debian Release: 8.0
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

firmware-iwlwifi depends on no packages.

firmware-iwlwifi recommends no packages.

Versions of packages firmware-iwlwifi suggests:
ii  initramfs-tools  0.119

-- no debconf information

--- End Message ---
--- Begin Message --- 
Closing as the requested information was not provided.

Ben.

-- 
Ben Hutchings
Klipstein's 4th Law of Prototyping and Production:
                                    A fail-safe circuit will destroy
others.

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