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Message #94382
[Bug 1398585] Re: [Inter 7260] Very slow and unstable WIFI
BruceWouaigne, the next step is to fully commit bisect from kernel
3.13.11.11 to 3.16 in order to identify the last good kernel commit,
followed immediately by the first bad one. This will allow for a more
expedited analysis of the root cause of your issue. Could you please do
this following https://wiki.ubuntu.com/Kernel/KernelBisection ? Please
note, finding adjacent kernel versions is not fully commit bisecting.
Thank you for your understanding.
Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Tags added: needs-bisect regression-release
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https://bugs.launchpad.net/bugs/1398585
Title:
[Inter 7260] Very slow and unstable WIFI
Status in linux package in Ubuntu:
Incomplete
Bug description:
Using an Asus Zenbook UX303L, with the last kernel, wifi is almost
unusable. The connection is VERY slow and keeps dropping.
There was absolutely no problem with the linux-image-3.13.0-40-generic
kernel.
Tried turning off the power management of wlan0 without any changes.
lspci -knn | grep Net -A2
02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 6b)
Subsystem: Intel Corporation Dual Band Wireless-N 7260 [8086:c160]
Kernel driver in use: iwlwifi
Here is the speedtest output with the last kernel:
☺ ~⮀ speedtest
Retrieving speedtest.net configuration...
Retrieving speedtest.net server list...
Testing from Orange (***)...
Selecting best server based on latency...
Hosted by iperf.fr (Rouen) [315.45 km]: 15.149 ms
Testing download speed........................................
Download: 19.17 Mbits/s
Testing upload speed..................................................
Upload: 30.53 Mbits/s
And after a rollback on the 3.13
☺ ~⮀ speedtest
Retrieving speedtest.net configuration...
Retrieving speedtest.net server list...
Testing from Orange (***)...
Selecting best server based on latency...
Hosted by TestDebit.info (Limoges) [264.48 km]: 13.848 ms
Testing download speed........................................
Download: 61.95 Mbits/s
Testing upload speed..................................................
Upload: 71.33 Mbits/s
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-25-generic 3.16.0-25.33~14.04.2
ProcVersionSignature: Ubuntu 3.16.0-25.33~14.04.2-generic 3.16.7
Uname: Linux 3.16.0-25-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue Dec 2 22:39:01 2014
InstallationDate: Installed on 2014-11-20 (12 days ago)
InstallationMedia: Ubuntu-GNOME 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: bruce 2241 F.... pulseaudio
/dev/snd/pcmC1D0p: bruce 2241 F...m pulseaudio
/dev/snd/controlC1: bruce 2241 F.... pulseaudio
CurrentDesktop: GNOME
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=8a3f827c-19e2-473a-aeef-d988e7b1be88
InstallationDate: Installed on 2014-11-20 (12 days ago)
InstallationMedia: Ubuntu-GNOME 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: ASUSTeK COMPUTER INC. UX303LN
Package: linux (not installed)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-25-generic root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash acpi_osi= vt.handoff=7
ProcVersionSignature: Ubuntu 3.16.0-25.33~14.04.2-generic 3.16.7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-25-generic N/A
linux-backports-modules-3.16.0-25-generic N/A
linux-firmware 1.127.8
Tags: trusty
Uname: Linux 3.16.0-25-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 06/23/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX303LN.203
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX303LN
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303LN.203:bd06/23/2014:svnASUSTeKCOMPUTERINC.:pnUX303LN:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LN:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: UX303LN
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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