kernel-packages team mailing list archive

[Jason Gerard DeRose <jason@xxxxxxxxxxxx>]

Emmanuel,

I'll test the -9.ucode ASAP. Are there any bits from 3.14 or 3.15 that
should be backported in order for the Ubuntu 3.13 kernel to work best
with the -9.ucode?

System76 customers are experiencing a lot of problems with 7260/3160
cards, and so we're keen on getting -9.ucode in a linux-firmare SRU,
assuming that's the correct fix.

Interestingly, -8 seemed to work much better on our products than -7
does, which I guess could be related to a lot of factors (different
antenna designs, different card revisions, different APs, etc). For us,
reverting to -7 seems to create problems similar to those that people
are here attributing to -8.

FWIW, on this 7260 (rev 73) I'm testing:

Device:	04:00.0
Class:	Network controller [0280]
Vendor:	Intel Corporation [8086]
Device:	Wireless 7260 [08b1]
SVendor:	Intel Corporation [8086]
SDevice:	Dual Band Wireless-AC 7260 [4070]
Rev:	73

I'm frequently getting disconnects like this, on both the G and AC
routers I test with regularly:

[ 4917.138750] wlan0: deauthenticated from 00:21:29:71:0a:c1 (Reason: 7)
[ 4917.154768] cfg80211: Calling CRDA to update world regulatory domain
[ 4917.155185] wlan0: authenticate with 00:21:29:71:0a:c1
[ 4917.156421] wlan0: send auth to 00:21:29:71:0a:c1 (try 1/3)
[ 4917.158939] wlan0: authenticated
[ 4917.159211] iwlwifi 0000:04:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[ 4917.159220] iwlwifi 0000:04:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[ 4917.161249] cfg80211: World regulatory domain updated:
[ 4917.161256] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 4917.161261] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 4917.161265] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 4917.161269] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 4917.161272] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 4917.161275] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 4917.162508] wlan0: associate with 00:21:29:71:0a:c1 (try 1/3)
[ 4917.166334] wlan0: RX AssocResp from 00:21:29:71:0a:c1 (capab=0x411 status=0 aid=4)
[ 4917.167410] wlan0: associated
[18596.000601] cfg80211: Calling CRDA to update world regulatory domain
[18596.007368] cfg80211: World regulatory domain updated:
[18596.007375] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[18596.007380] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[18596.007385] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[18596.007388] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[18596.007391] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[18596.007395] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[18599.790518] wlan0: authenticate with 00:21:29:71:0a:c1
[18599.791521] wlan0: send auth to 00:21:29:71:0a:c1 (try 1/3)
[18599.844059] wlan0: send auth to 00:21:29:71:0a:c1 (try 2/3)
[18599.899353] wlan0: send auth to 00:21:29:71:0a:c1 (try 3/3)
[18599.954640] wlan0: authentication with 00:21:29:71:0a:c1 timed out
[18611.935967] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1293569

Title:
  iwlwifi-7260-8.ucode causes network disconnections problems

Status in “linux-firmware” package in Ubuntu:
  Confirmed
Status in “linux-firmware” source package in Precise:
  Fix Released
Status in “linux-firmware” source package in Trusty:
  Fix Released

Bug description:
  Running 14.04 (beta) with Kernel 3.13.0-17-generic

  I've encountered a strange and reproducible error with the
  iwlwifi-7260-8.ucode firmware.

  This laptop is a Dell XPS 12 (haswell). With the -8 firmware, it will
  connect fine to wifi for 30 or 40 mins at a time, then will start
  dropping connections repeatedly. Even modprobe -r unloading and
  reloading doesn't fix the issue, only a reboot will temporarily solve
  it for 40 mins at a time.

  Moreover, here is what's strange, is during these episodes of
  disconnection it seems to affect the actual router (2Wire), as the
  other devices in the house will also start to have issues (very slow
  connections, limited range,etc).  Once I reboot this laptop everything
  and all devices will return to normal.

  This issue has been fixed by me manually removing the -8 firware from
  /lib/firmware and letting the -7 firmware load instead. Since that has
  been done there has not been a single issue of this happening (now
  going on 4 days).

  let me know if there is any other information you would like me to
  provide.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-firmware 1.126
  ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
  Uname: Linux 3.13.0-17-generic x86_64
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Mar 17 08:13:25 2014
  Dependencies:
   
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-03-07 (9 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140307)
  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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