Lenovo Yoga 2 13'' with Intel 7260 wireless problems

[sutasu]

Wireless working well only within close distance from the router (cheked in several places with different router types).
This/similar issue discussed in 1305305 and reported to be fixed but I dont' see it.
Mainline kernel 3.17.0.rc4 has the same issue.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-35-generic 3.13.0-35.62
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: sutasu 1850 F.... pulseaudio
                      sutasu 2043 F.... pulseaudio
 /dev/snd/controlC1: sutasu 1850 F.... pulseaudio
                      sutasu 2043 F.... pulseaudio
CurrentDesktop: KDE
Date: Sat Sep 13 09:37:09 2014
HibernationDevice: RESUME=UUID=38a4c22a-8556-4ac7-bd78-63fec4959dc6
InstallationDate: Installed on 2014-09-07 (6 days ago)
InstallationMedia: Kubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: LENOVO 20344
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic.efi.signed root=UUID=42e3bdfd-e07a-4d39-9cb2-8bf9138d8271 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-35-generic N/A
 linux-backports-modules-3.13.0-35-generic N/A
 linux-firmware 1.127.5
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/27/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: 96CN19WW(V1.05)
dmi.board.asset.tag: 31900058Std
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900058Std
dmi.chassis.asset.tag: 31900058Std
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo Yoga 2 13
dmi.modalias: dmi:bvnLENOVO:bvr96CN19WW(V1.05):bd02/27/2014:svnLENOVO:pn20344:pvrLenovoYoga213:rvnLENOVO:rnINVALID:rvr31900058Std:cvnLENOVO:ct10:cvrLenovoYoga213:
dmi.product.name: 20344
dmi.product.version: Lenovo Yoga 2 13
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.

Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on bugzilla.kernel.org.

Once this bug is reported upstream, please add the tag: 'kernel-bug-reported-upstream'.

[0] https://wiki.ubuntu.com/Bugs/Upstream/kernel

[Joseph Salisbury (jsalisbury)]

Also, is this issue a regression? If so, do you happen to know the last kernel version where you did not see this?

[sutasu (sutasu)]

In 1305305 it was reported that issue was fixed in 3.13.0-34. Though in 3.13.0-35 it is again there. It could be regression... I have limited access to the computer now since my daughter uses it in university (on windows) so cannot make more tests at the moment.

[sutasu (sutasu)]

there is a kernel bug with similar issue which I added comment to:
https://bugzilla.kernel.org/show_bug.cgi?id=42978