Bug#780920: firmware-iwlwifi: iwlwifi-7260-8.ucode causes frequent network disconnections problems

[Ben Hutchings]

Control: tag -1 moreinfo

On Sat, 21 Mar 2015 09:03:49 -1000 Alexandre Brianceau  
wrote:
> Package: firmware-iwlwifi
> Version: 0.43

This version includes iwlwifi-7260-7.ucode, -8.ucode and -9.ucode.

> Severity: important
> 
> Dear Maintainer,
> 
> I use wifi with my Lenovo X240 with the Intel network controller 7260. Just
> below, the lspci command output :
[...] 
> I am running Debian Jessie x86_64.

Then the iwlwifi driver will prefer to use iwlwifi-7260-9.ucode, so why
do you say this is is a bug in -8.ucode?

[...]
> I found similar issues on the Ubuntu Launchpad, the #1349108
> (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1349108)

That was a driver bug, apparently fixed in Linux 3.15.

> 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.

I don't see how that's possible when the driver prefers
iwlwifi-7260-9.ucode.

Ben.

-- 
Ben Hutchings
The first rule of tautology club is the first rule of tautology club.

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Bug#780920: firmware-iwlwifi: iwlwifi-7260-8.ucode causes frequent network disconnections problems

[Alexandre Brianceau]

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 e040 (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