Francois Thirioux, this bug report is being closed due to your last
comment https://bugs.launchpad.net/ubuntu/+source/linux-
firmware/+bug/1289961/comments/67 regarding this being fixed with an
update. For future reference you can manage the status of your own bugs
by clicking on the current status
I do not know if the issue still exists in Trusty LTS...
If so, it should be useful to backport a solution but I even do not know if it
is possible (last firmwares are 3.17+ compatible).
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Francois Thirioux, would you need a backport to a release prior to
Vivid, or may this be closed as Status Invalid?
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Title:
8086:08b2 [Lenovo Thin
FYI there is *no* more issues with current Vivid (kernel 3.19,
firmwares 23.(11-13-15).10.0).
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Title:
8086:08b2 [Lenovo ThinkPad T440s] Power ma
I can confirm the problem, and also tried to update the kernel to 3.17.3
and use the latest driver 23.11.10.0, but the speed was still much lower
than using the 22.24.8.0 so I reverted back. Hope it is resolved.
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Please note that I had to do the same uAPSD disabling in Windows 8/8.1 with
latest drivers via the W8's driver parameters window.
Reference (e.g.) :
https://communities.intel.com/message/265839#265839
from
https://communities.intel.com/thread/47983
** Description changed:
With power managemen
OK, I got it.
It seems to me that the -8 version has uAPSD disabled. I don't know how to
check that.
In
/sys/module/iwlwifi/parameters
the uapsd_disable is set to N
but as far I can remember uAPSD was disabled when using -8 version because -8
driver was buggy. Is it a kernel stuff to disable it
Bug happens too with old v9 firmware :
23.214.9.0
from Debian Sid :
https://packages.debian.org/sid/firmware-iwlwifi
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Title:
8086:08b2 [Lenovo Th
Francois Thirioux, no worries. The fact you previously commented you
were using Utopic was taken into consideration when I made my
comment/updates.
Hence, you wouldn't need to create an additional bug report about this
problem unless specifically asked by a developer/triager.
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Oops.
In my comment :
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1289961/comments/48
i say that I'm now using Utopic.
For sure I should have opened a new bug ? (Very sorry if it's the case.)
The Utopic's current linux-firmware 1.138 includes -7, -8 and -9
versions of iwlwifi's
Francois Thirioux, just to clarify this bug report, this is a regression in
Trusty update going from linux-firmware 1.127 to 1.127.10. As per
https://launchpad.net/ubuntu/+archive/primary/+files/linux-firmware_1.127.tar.gz
this is how 1.127 only included:
/linux-firmware/iwlwifi-7260-7.ucode
/li
I tested the -8 firmware which was in linux-firmware.
But anyway :
http://wireless.kernel.org/en/users/Drivers/iwlwifi?action=AttachFile&do=get&target=iwlwifi-7260-ucode-22.24.8.0.tgz
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ht
Francois Thirioux, could you please provide a URL for the
iwlwifi-7260-ucode-22.24.8.0 firmware you tested?
** Tags added: regression-release
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Tit
** Description changed:
In Ubuntu Trusty (Gnome) with my ThinkPad T440s using Intel 7260 ac
wireless the download speed reaches an upper limit 400 kB/s instead of
the normal 1500 kB/s I get with some other PC connected to my network.
The speed often slows down very very low, especially whe
I tried with :
iwlwifi-7260-ucode-22.24.8.0
and current Utopic's 3.16 kernel and I get full speed (with PM on, of course).
So, the current 25.222.9.0 firmware must be faulty.
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ht
The above tweak does not allow to recover full speed. Sorry, some tests
proved one more time that the only satisfatory workaround I found is to
disable power management.
** Description changed:
In Ubuntu Trusty (Gnome) with my ThinkPad T440s using Intel 7260 ac
wireless the download speed rea
** Description changed:
In Ubuntu Trusty (Gnome) with my ThinkPad T440s using Intel 7260 ac
wireless the download speed reaches an upper limit 400 kB/s instead of
the normal 1500 kB/s I get with some other PC connected to my network.
The speed often slows down very very low, especially whe
>From :
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319630/comments/12
I tried to add :
options 11n_disable=8
in
/etc/modprobe.d/iwlwifi.conf
and it seems to allow full speed. I'll confirm this tweak with more
testing (ping, speed...) as soon as possible.
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** Tags removed: kernel-bug-exists-upstream-v3.15-rc2
** Tags added: firmware-fixed-upstream
** Package changed: linux (Ubuntu) => linux-firmware (Ubuntu)
** Changed in: linux-firmware (Ubuntu)
Status: Incomplete => Triaged
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Ok, sure I forgot last night to do that.
So, with 3.18rc7 and Utopic's default firmware (25.222.9.0) there IS a
speed issue. It seems to me that the dowload speed is as bad as Utopic
with 3.16 kernel.
But unfortunately, the latest firmware (-10) cannot be loaded by 3.16
kernel...
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Francois Thirioux, is this problem reproducible if you use the firmware
that came by default with Ubuntu, and the latest mainline kernel
3.18-rc7?
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I quickly tested the dowload speed with :
kernel 3.18 rc7 from Ubuntu's kernel archive
iwlwifi 23.10.10 (for kernel>=3.17) firmware
power management not tweaked, i.e. it means ON
I've got NO speed issues with this config. Hope it helps.
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I do not have the time to do that now but i'll try in one week. Does
12.04.0 contain the 7260 firmware ? If not, what firmware should I use
for ?
I can quickly test some firmware with Utopic ?
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Francois Thirioux, for regression testing purposes, could you please
test for this in 12.04.0 (not 12.04.3 or some other variant) via http
://old-releases.ubuntu.com/releases/12.04.0/ and advise if this is
reproducible?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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I do reopen this bug as it is still alive.
I've just installed a wifi repeater, N mode, good connection to router
and signal emitting strength.
Tests with bandwith tests and dowloads of big files :
- windows 8 with uapsd off : 1,5 Mo/s
- ubuntu 14.10 kernel 3.16.0-25 or 26, driver 25.222.9.0 (
** Changed in: linux (Ubuntu)
Status: Expired => New
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Title:
8086:08b2 [Lenovo ThinkPad T440s] Power management causes Intel wifi
7260 s
[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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T
OP, 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 mainline o
Confirming the same issue on Ubuntu 14.04.1 LTS with the most recent
updates at the moment of the comment.
Turning off wireless power management works as a temporary fix.
** Changed in: linux (Ubuntu)
Status: Expired => Confirmed
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[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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T
Christopeher,
Run with PM on.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319791
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Title:
8086:08b2 [Lenovo ThinkPad T440s] Power manag
Chris,
I didn't have this chipset prior to Trusty. Do you want PM on or off
for that ubuntu-bug run
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Title:
8086:08b2 [Lenovo ThinkPad T440s] P
Thomas Vachon, please again see
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/comments/34
.
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Title:
8086:08b2 [Lenovo ThinkPad T44
I can confirm on the latest released packages its still a problem. A
package actually rolled back my hook blacklist and now finally my wifi
is stable again
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A revert to v7 Intel driver has been committed in linux-firmware 127.2 ,
so I'll wait...
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Title:
8086:08b2 [Lenovo ThinkPad T440s] Power manageme
Ray-Ven, 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 off
I've been losing connection with 3.13.0-24-generic with high download
rates. After a few "fn"+"Wireless Button" actions and reconnectings it
seems to be stable. strange
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Francois Thirioux, for regression testing purposes, could you please
test for this in 12.04.0 via http://old-
releases.ubuntu.com/releases/12.04.0/ and advise if this is
reproducible?
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htt
(By far, I do not get any big difference between ping with and without
PM. Near by my router, 2.2 ms to 2.5 ms.)
I do not know if this problem occurs in prior releases. Never tested.
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htt
Francois Thirioux, did this problem not occur in a release prior to
Trusty?
Thomas M Steenholdt, 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
Lots of talk about bandwidth, but (IMHO) at least as interesting is ping
times (because the results are instantly visible):
I'm on a ThinkPad T431s with an "Intel Corporation Centrino Advanced-N
6235 (rev 24)"
3.13.0-24-generic without PM (pinging my AP):
$ ping -c 5 192.168.8.2
PING 192.168.8.2
no changes with 3.15 rc2.
+1 to Joel's message.
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Title:
8086:08b2 [Lenovo ThinkPad T440s] Power management causes Intel wifi
7260 slowness
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