Ubuntu 16.04 - Bad support for Intel Wireless 7260

[Alfredo Gemma]

General Information.

uname -a:
Linux 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

sudo iwconfig:

enp0s25 no wireless extensions.

wwan0 no wireless extensions.

lo no wireless extensions.

wlp3s0 IEEE 802.11abgn ESSID:"SEE-R"
          Mode:Managed Frequency:2.462 GHz Access Point: C4:6E:1F:9E:3D:44
          Bit Rate=300 Mb/s Tx-Power=22 dBm
          Retry short limit:7 RTS thr:off Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=63/70 Signal level=-47 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:524 Missed beacon:0

sudo lshw:

 *-network
                description: Wireless interface
                product: Wireless 7260
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:03:00.0
                logical name: wlp3s0
                version: 73
                serial: ac:7b:a1:8a:f9:b2
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-21-generic firmware=16.242414.0 ip=192.168.0.112 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
                resources: irq:31 memory:f1500000-f1501fff

Wireless keeps disconnecting no matter what Intel 7260 driver I use.
Since this problem didn't occur in ubuntu 14.04, I guess it is kernel related.
---
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: alfredo 1638 F.... pulseaudio
 /dev/snd/controlC1: alfredo 1638 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=24fc60c4-4367-4996-ba0c-3c547853f616
InstallationDate: Installed on 2016-04-30 (4 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: FUJITSU CELSIUS H730
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=8d571c0b-8834-4a51-b72f-332d1dc4ed03 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-21-generic N/A
 linux-backports-modules-4.4.0-21-generic N/A
 linux-firmware 1.157
Tags: xenial
Uname: Linux 4.4.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 02/05/2015
dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
dmi.bios.version: Version 1.12
dmi.board.name: FJNB274
dmi.board.vendor: FUJITSU
dmi.board.version: G3
dmi.chassis.type: 10
dmi.chassis.vendor: FUJITSU
dmi.chassis.version: CELSIUS H730
dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.12:bd02/05/2015:svnFUJITSU:pnCELSIUSH730:pvr10601583184:rvnFUJITSU:rnFJNB274:rvrG3:cvnFUJITSU:ct10:cvrCELSIUSH730:
dmi.product.name: CELSIUS H730
dmi.product.version: 10601583184
dmi.sys.vendor: FUJITSU

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1578610/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1578610

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Alfredo Gemma (alfredo-gemma)]

apport information

[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Alfredo Gemma (alfredo-gemma)]

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[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/

[Alfredo Gemma (alfredo-gemma)]

I tried to install the upstream kernel, but I think there is a substantial problem with wifi management.

This error occurrs while installing the Kernel:

libkmod: ERROR ../libkmod/libkmod-config.c:635 kmod_config_parse: /etc/modprobe.d/iwlwifi.conf line 8: ignoring bad line starting with 'iwlwifi'

Thanks

[Alfredo Gemma (alfredo-gemma)]

After extensive testing, I con confirm that the bug is fixed in the upstream kernel.

Thank you

[Corey Hanson (sofuego)]

I just accidentally clicked on "Fix Releeased" thinking it would provide more info rather than change the status ;/

[Alfredo Gemma (alfredo-gemma)]

Hi Corey,

As you can see from the previous messages, Fix Released just means that the bug has been fixed in the latest upstream kernel (v4.6) that I tested.

After testing the kernel v4.6 I also verified that the Intel Wireless 7260 support is not an issue anymore, starting from the kernel v4.4 (I had 4.3).