This problem went away some time between 16.04 and 19.10 (I went from
16.04 to 18.04 some time ago, and I believe it disappeared in that
jump); I no longer have a way to test it on 16.04.
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Yes, I am running A06. However, a) the A08 update does not indicate
anything but a touchpad fix for Windows 10 32-bit (I realize this can be
unreliable) and b) since the A06 update I have been unable to
successfully boot a FreeDOS image to update my BIOS.
If you have any information on how to
** Tags removed: latest-bios-a06
** Tags added: bios-outdated-a08
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Title:
8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
This just happened again, linux-image-4.4.0-31-generic 4.4.0-31.50,
16.04. It certainly happens less often with 16.04 than it did in 15.04
and previous.
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15.10 and 16.04 both appear to be much improved. I haven't been running
16.04 long enough to be sure, but 15.10 probably required reinsertion of
the drivers no more than 2-3 times over the six months I ran it.
What I do find is that the wireless card is often (but not always)
disabled after wake
I'm now on 15.04, BIOS A06, kernel 3.19.0-25, and I still have
intermittent problems, although things are better than they were at
their worst. When I do have problems, removing and reinserting
iwlmvm/iwlwifi fixes it.
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Hello,
I solved the problem. Actually, I do not know how so, in order to be
useful to someone, I share the operations made:
- I updated the BIOS of my Dell XPS 13 from A05 to A06 as suggested in
#1426259. The following weeks I then verified that it worked most of
the times. I traveled and, let
Hello,
I filled an apport bug in another topic: #1426259
imho this should linked with this one but i'm not sure on how to
proceed.
i'm sorry to bother with chat-like questions, if this is not the correct
place just let me know:
- is this bug affecting all distro? i'm often abroad and a laptop
OK. 3.16.0-29 seems to be much better, but I just experienced the same
symptoms as for the logs (I believe) referred to in comment 77 above;
specifically, the machine lost association with the AP and could not
reestablish. Removing and reinserting the iwlmvm and iwlwifi modules
fixed the problem
** Tags added: utopic
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Title:
8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
connection/becomes unusable on Intel 7260
To
Sure, sorry for the mess.
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Title:
8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
connection/becomes unusable on Intel 7260
To
Pavel, it would be most helpful if you filed a new report (not apport-collect
to another report) via a terminal:
ubuntu-bug linux
** Attachment removed: Screenshot from 2014-12-15 09:25:40.png
Hi I am runing Xubuntu 14.04.1 with the same wifi card (ntel® Dual Band
Wireless-AC 7260). I have the latest bios. The problem with the unstable wifi
connection (wpa2, 2.4GHz) appears in kernels 3.0.13-40. ie 3.0.13.40 works
well while the actual 13.0.13.44 suffers with the connection problem.
Ethan Blanton, could you please post the results of the following terminal
command:
sudo dmidecode -s bios-version sudo dmidecode -s bios-release-date
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A06
11/07/2014
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Title:
8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
connection/becomes unusable on Intel 7260
To manage
** Tags removed: bios-outdated-a06
** Tags added: latest-bios-a06
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Title:
8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
I am now running BIOS A06 and Ubuntu 14.10 due to a mainboard failure on
the laptop necessitating repair by Dell. I will update here if there
appear to be any substantial improvements/regressions. I apologize if
this loses track of the state for LTS, but as this is a machine I need
for daily use
** Tags removed: latest-bios-a04
** Tags added: bios-outdated-a06
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Title:
8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
Just FYI, there is an updated bios for this hardware (A06) posted on
December 22 2014. I don't believe it would influence this bug though.
The fixes, as listed here:
http://www.dell.com/support/home/us/en/04/Drivers/DriversDetails?driverId=TDWHX
Fixes
- Add code to prevent incorrect characters
sticks, what impact a BIOS update for Ubuntu may have is typically not
captured in vendor release notes as outlined in
https://help.ubuntu.com/community/ReportingBugs#Hardware_bug_reports_.28linux_kernel.2C_xorg.2C_sound.2C_etc..29
.
However, so your problem and hardware may be tracked, could you
Seth Forshee, Ethan Blanton has provided the requested information as
per
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1315221/comments/75
. Given you are the only one with access to the requested logs, what
would you like to have done now?
** Changed in: linux (Ubuntu)
Status:
hello,
sorry for the basic question...
during the last update the application Software Updater reported me a
wrong package installation. the package is related to the wifi-bluetooth
of the intel chipset we are talking about in this discussion. however,
i'm not able to find any more the log
@gianluca,
It seems that you are using a preloaded Ubuntu system.
What is your hardware vendor and preloaded Ubuntu series?
Did you ever upgrade the system from Ubuntu 12.04 to Ubuntu 14.04?
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hello fourdollars,
thanks for the reply.
The machine is a Dell XPS. I bought it with ubuntu 12.04 on it and the
very first operation I did has been an update to 14.04
To be honest, I do not remember if the problem arose also with the 12.04
version.
g.
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@gianluca,
Could you also provide the list of `dkms status`?
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Title:
8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
here we are:
oem-audio-hda-daily-lts-quantal, 0.201308192259~precise1, 3.5.0-56-generic,
x86_64: installed
oem-wireless-bluetooth-intel-7260, 3.10.20130828, 3.5.0-56-generic, x86_64:
installed
virtualbox, 4.3.10, 3.13.0-39-generic, x86_64: installed
virtualbox, 4.3.10, 3.13.0-40-generic,
@gianluca,
If you are using the Linux kernel from Ubuntu 14.04, such as
3.13.0-{39,40,43}-generic, those DKMS packages should not affect your system.
You can remove them by `sudo apt-get purge oem-audio-hda-daily-lts-quantal
oem-wireless-bluetooth-intel-7260` if you think they are redundant.
@fourdollars
i removed those packages and, as you anticipated, the problem still is
there.
thanks for your help, waiting (impatiently), the issue to evolve...
best,
g.
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Thank to all,I had the same problem
With the update to kernel 3.15.10-031510 the problem is solved
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Title:
8086:08b1 (rev 6b) [Dell XPS 13
eno, thank you for your comment. So your hardware and problem may be tracked,
could you please file a new report with Ubuntu by executing the following in a
terminal while booted into the default Ubuntu kernel (not a mainline one) via:
ubuntu-bug linux
For more on this, please read the official
HI,
this is indeed interesting.
Was it an official workaround? I would like to stay on 14.04 (since it
is LTS), does this patch will be released in one of next updates?
The wifi issue is really huge for me, it does not even connect with
EDUROAM (the international educational wifi network) and
hello,
same issue for me, intermittent access, poor bandwidth, no connection
at all with some access points. please let me know how i can be of help
(please give me very clear instructions...)
best,
g.
Dell XPS13 with Ubuntu 14.04
$ uname -a
Linux drogo 3.13.0-39-generic #66-Ubuntu SMP Tue
For me then problem solved after upgrading to 14.10
On 13:05, Sat, Nov 15, 2014 gianluca antonelli1...@gmail.com wrote:
hello,
same issue for me, intermittent access, poor bandwidth, no connection
at all with some access points. please let me know how i can be of help
(please give me very
Ethan Blanton, could you please post any debug attachments uncompressed
and untarred to this report (not e-mailed to one person) so others may
review?
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On Fri, Nov 14, 2014 at 02:43:56PM -, Christopher M. Penalver wrote:
Ethan Blanton, could you please post any debug attachments uncompressed
and untarred to this report (not e-mailed to one person) so others may
review?
Christopher: These dumps may contain private data, possibly including
Seth Forshee / Eathan Blanton, my apologies for this erroneous request.
The comment has been hidden, so please disregard.
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Title:
8086:08b1 (rev
Still using 3.13.0-37-generic #64+iwlltr0001, this afternoon I had a
spat where the card lost association and would not reacquire it.
Removing and reinserting iwlwifi/iwlmvm fixed it immediately. Seth, I
am emailing you wifi-debug output from both before and after reinsertion
(which should show
Seth,
It's not completely clear to me whether this kernel helps or not, but I
think it does. Certainly it is no worse than the last kernel I tested.
* It is my general sense that I am experiencing fewer slowdowns, but
they are certainly still occurring.
* I have had zero complete failures of
Arvin Razavi, thank you for your comment. Unfortunately, this bug report is not
scoped to you, or your problem. So your hardware and problem may be tracked,
could you please file a new report with Ubuntu by executing the following in a
terminal while booted into the default Ubuntu kernel (not a
Christopher, I've posted a new bug report as instructed. Sorry for any
inconvenience.
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Title:
8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi
I'm still experiencing issues. Every now and then my network becomes
really, really slow. A continuous ping to my router shows high latency
and packet loss during these episodes. The problem resolves after about
3-5 mins if left unattended, or instantly if I disable/enable
wifi.?field.comment=I'm
I have just rebooted to this kernel, I will report back with any
improvements or regressions after some experience using it.
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Title:
8086:08b1
Antonio Cañas Vargas, as far as Ubuntu is concerned, WORKAROUNDs, hacks, etc.
does not solve a bug as outlined in https://wiki.ubuntu.com/Bugs/Status . So
your hardware and problem may be tracked, could you please file a new report
with Ubuntu by executing the following in a terminal while
Ethan: I got a new patch from Intel from Intel for 7260 wireless
problems. Can you try out the build below and see if it helps? Thanks!
http://people.canonical.com/~sforshee/iwl-ltr/trusty/
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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Apparently the problem has been solved in my XPS 13 with Ubuntu 14.04
using the instructions from
http://ubuntuforums.org/showthread.php?t=2012228p=12061341#post12061341
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I was just unable to connect using 3.13.0-32-generic
#57+lp1349572v20140847, and the problem was fixed by removing and
reinserting iwlmvm and iwlwifi. Due to an unfortunate stupidity on my
part, I am unable to send the wifi-debug files.
This problem occurred, I believe, due to spending a
The distro kernel isn't patched yet as stable release update kernels go
through a fairly lengthy (but necessary) regression testing cycle before
they are released. I'd estimate that at this point we're probably 4 or 5
weeks away from having a kernel with those patches pushed out to the
distro at
Thanks for the testing. We've already committed those changes based on
feedback from bug 1349572, so we can leave this bug open and continue
trying to find a fix for the poor performance.
FYI, I'm travelling this week so I probably won't be able to do much
more work on this until next week.
**
After a week on 3.13.0-32-generic #57+lp1349572v20140847 on several
wireless networks, I believe I can confidently say that the
disassociation problem is not present in this kernel. I still get
dragging speeds from time to time consistent with the rate-related
problems discussed previously,
I am now running 3.13.0-32-generic #57+lp1349572v20140847, I will
let you know how it goes. I have been having relatively less trouble
than usual the past few days (for whatever reason; this bug is rather
inconsistent), so it may take a while to know if there's much
improvement.
Thanks for
Ethan: I found another fix from 3.15 which is related to the recovery
from beacon loss events for drivers like iwlwifi. I posted a build here
(which includes the backport from comment #58 as well):
http://people.canonical.com/~sforshee/lp1349572/linux-3.13.0-32.57+lp1349572v20140847/
Please
Same problem with 12.04 - 14.04 upgrade on 8/7/2014. An earlier
incarnation of Ubuntu (Oneiric?) had similar issue, I seem to remember.
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Title:
eric, thank you for your comment. Unfortunately, this bug report is not scoped
to you, or your problem. So your hardware and problem may be tracked, could you
please file a new report with Ubuntu by executing the following in a terminal
while booted into the default Ubuntu kernel (not a
In my case (Ubuntu 14.04 on dell xps13 Sputnik, kernel 3.13) the wifi
performance substantially degraded after the recent linux-firmware
update.
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Davide: You should open a new bug for your issue by running 'ubuntu-bug
linux' in a terminal. Thanks!
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Title:
8086:08b1 (rev 6b) [Dell XPS 13
Ethan: I've been looking at your dump more. What seems to be happening
is that you're getting a reliable connection at CCK rates (low number of
tx retries), then the rate control algorithm bumps you up to HT rates
and you start getting a high number of retries. After a while you get
bumped back
Ethan: I built a test kernel with a single backport from 3.14 which is
supposed to alleviate beacon loss problems somewhat. This won't help
with any stutter in the connection, but it might help with the
disconnects. Let me know if it helps. Thanks!
I can see the driver trying to scale down the rate because of too many
transmit failures, but it looks like it's already at the lowest rate.
The signal levels the driver reports look fairly low but not
unreasonable (around -80 to -85 dBm). My experience with older Intel
wireless hardware was that
Seth, I just sent some wifi-debug output to your @canonical email
address.
This may not be a great capture, let me know if it's not useful to you
and I'll try to get another. I have unfortunately not been sitting at
this laptop much the past couple of days for various reasons, so when
I've
Ethan: We recently incorporated some updates in 14.04 specifically for
disconnection issues with Intel 7260 wireless. Could you ensure your
system is fully up to date, reboot (ensuring that you use the official
3.13 kernel for trusty and not any newer version you installed for
testing), and let me
Seth: I am currently running, and have been running for a couple of
days, linux-image-3.13.0-32-generic and linux-firmware 1.127.5. I was
in fact going to post here that performance seems to be *worse* than it
had been for some time; three times recently my laptop has lost its wifi
association
Thanks for the update. I've got a couple things I'd like you to try
next.
First, when you've booted to 3.13.0-32, wait until you are no longer
able to associate. Then if you have access to a wired connection, run
'apport-collect 1315221' to attach logs from that kernel. If you don't
have a wired
apport information
** Tags added: apport-collected
** Description changed:
My Intel 7260 network card regularly shows very poor performance and/or
loses its connection entirely. On several occasions I have been unable
to reestablish an association with the AP without rebooting. This
This apport collect is after an association failure this morning; the
machine was rebooted about two hours ago and has been associated since.
If that is too long after reboot, let me know and I'll collect another
set of data. This machine has no wired Ethernet and I do not have a USB
dongle.
Those logs are only showing me what happened since the last boot. If you
can hunt down the syslog in /var/log which has that boot then that might
help.
Actually, what would be even better would be if you could download
http://people.canonical.com/~sforshee/wifi-debug, make it executable,
then
Hmm, it's odd that you would have seen any difference between 3.15 rc2
and rc3, as there are no changes at all to any networking code or
wireless drivers between those releases. I can't find anything that
looks like it should have had any impact on the stability of your
wireless connection.
--
That is the same conclusion I came to at the time, that it made no
sense. I wondered if linux-firmware didn't change somewhere in there.
As I recall, 3.13 uses the -8 firmware, and 3.15 used the -9, and I
wondered if -9 might have been updated. I can retry 3.15.0-rc1 -rc2
-rc3 if that would be
Yes, -9 is supported as of 3.15-rc2 (though it should also be supported
in the 3.14 stable updates as well). I don't recall any updates to -9,
but it was added to linux-firmware in trusty at some point, so if you
did any other updates in between testing rc2 and rc3 it's possible you
also changed
OK, I've had time to triage wifi-debug (sorry, but I'm sure you
understand!), and it is now running. This failure takes between a few
minutes to several hours to emerge; I will almost certainly see wifi
dropouts in the next few hours, but it may or may not lose association
entirely for a very long
On Tue, Jul 29, 2014 at 08:41:36PM -, Ethan Blanton wrote:
Regarding kernel versions; it sounds like you'd like me to test 3.14
(current) as well as 3.15-rc2 and 3.15-rc3? To clarify, 3.15-rc3 worked
without any issues for several days, so I believe the problem to be
entirely fixed there.
From the upstream kernel bug, it seems that fixes for bad iwlwifi 7260
behaviour upstream are in 3.14.6
https://bugzilla.kernel.org/show_bug.cgi?id=72601#c92
and, a second fix in https://bugzilla.kernel.org/show_bug.cgi?id=42978#c29
will land upstream shortly.
If these fixes are causing xps 13
asala: While it's known that there are forward fixes, it also worked in
an earlier kernel. This means that there is previous breakage, as well.
The fixes may be for that same breakage, I haven't looked into that.
I believe 3.16 is fixed, as well.
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I can. This will take me some time, as the problem does not necessarily
show up immediately. It is also somewhat better (though not entirely
fixed) in 3.13.0-30 compared to 3.13.0-24, under which this was
reported. (The connection still drops frequently, but it seems to
recover much more
XPS13 wifi behaviour seems to be much better on Linux kernel 3.15.2 from
the mainline ubuntu ppa: I was working for 2 hours and had only one
disconnection. http://www.yourownlinux.com/2014/06/how-to-install-
upgrade-to-linux-kernel-3-15-2-in-linux.html
Running 3.15.3 gave me no disconnections but
asala, thank you for your comment. So your hardware and problem may be tracked,
could you please file a new report with Ubuntu by executing the following in a
terminal while booted into a Ubuntu repository kernel (not a mainline one) via:
ubuntu-bug linux
For more on this, please read the
Ethan Blanton, the next step is to fully reverse bisect the kernel in
order to identify the fix commit. Could you please do this following
https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F
?
** Changed in: linux (Ubuntu)
Importance: Low = High
**
I'm also having this problem and found a matching bug over on the kernel bug
tracker:
https://bugzilla.kernel.org/show_bug.cgi?id=72601
Emmanuel Grumbach (Intel wifi driver maintainer) is helping with the
issue.
** Bug watch added: Linux Kernel Bug Tracker #72601
Craig, thank you for your comment. So your hardware and problem may be tracked,
could you please file a new report with Ubuntu by executing the following in a
terminal while booted into a Ubuntu repository kernel (not a mainline one) via:
ubuntu-bug linux
For more on this, please read the
** Summary changed:
- 8086:08b1 [Dell XPS 13 9333] iwlwifi regularly loses connection/becomes
unusable on Intel 7260
+ [8086:08b1] (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
connection/becomes unusable on Intel 7260
** Summary changed:
- [8086:08b1] (rev 6b) [Dell XPS 13 9333]
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