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Message #115758
[Bug 1451246] Re: Intel 7265 Wifi instability workaround
** Tags added: iwlwifi
** Tags added: 7265 intel thinkpad
** Description changed:
With both the 4.0.1 mainline kernel and this current kernel, I had a
problem with my Thinkpad T450s wifi that has an Intel 7265.
I made a comment from this report here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1437913
I will just copy paste what I wrote into here below...
"I have a Thinkpad T450s since 5/1/2015 with the same chip (though linux
wants the 7265D ucode though). It was unstable, even when upgrading to
the 4.0.1 mainline kernel. What actually kept things stable is by
disabling wireless-n.
All the details of how I fixed it from other people:
http://www.reddit.com/r/thinkpad/comments/34ln2h/t450s_ubuntu_1504_unstable_wifi/
Pretty much.... I had to get the latest 7265 ucodes and put it into /lib/firmware:
- sudo rm /lib/firmware/iwlwifi*
- sudo cp /path/to/iwlwifi-7265*-12.ucode /lib/firmware/.
- reboot....
Normal browsing seemed to be more stable but things like streams, speed
tests, and youtube would tank the connection.
Then I had to disable wireless-n:
echo 'options iwlwifi 11n_disable=1' | sudo tee -a /etc/modprobe.d/iwlwifi.conf
now it's completely stable, but I have to lose wireless-n as a result.
It's not your fault.... It's Intel's..."
-------------------------
I am testing these fixes right now on the same standard kernel and it
seems to be working fine. Hopefully this is enough information here. I
- am going to main the 4.0.1 mainlaine kernel though.
+ am going to main the 4.0.1 mainlaine kernel though. Should I also report
+ this to the mainline kernel bug report?
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-15-generic 3.19.0-15.15 [modified: boot/vmlinuz-3.19.0-15-generic]
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
- USER PID ACCESS COMMAND
- /dev/snd/controlC0: epicstar 1453 F.... pulseaudio
- /dev/snd/pcmC1D0p: epicstar 1453 F...m pulseaudio
- /dev/snd/controlC1: epicstar 1453 F.... pulseaudio
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: epicstar 1453 F.... pulseaudio
+ /dev/snd/pcmC1D0p: epicstar 1453 F...m pulseaudio
+ /dev/snd/controlC1: epicstar 1453 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun May 3 15:43:35 2015
HibernationDevice: RESUME=UUID=9caf85bf-266f-4356-9a64-031df7edb239
InstallationDate: Installed on 2015-05-02 (1 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: LENOVO 20BXCTO1WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic.efi.signed root=UUID=b8187455-26c0-492f-bf45-755286cf5623 ro quiet splash vt.handoff=7
RelatedPackageVersions:
- linux-restricted-modules-3.19.0-15-generic N/A
- linux-backports-modules-3.19.0-15-generic N/A
- linux-firmware 1.143
+ linux-restricted-modules-3.19.0-15-generic N/A
+ linux-backports-modules-3.19.0-15-generic N/A
+ linux-firmware 1.143
RfKill:
- 0: phy0: Wireless LAN
- Soft blocked: no
- Hard blocked: no
+ 0: phy0: Wireless LAN
+ Soft blocked: no
+ Hard blocked: no
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/10/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET47WW (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BXCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50512 STD
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrJBET47WW(1.12):bd03/10/2015:svnLENOVO:pn20BXCTO1WW:pvrThinkPadT450s:rvnLENOVO:rn20BXCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BXCTO1WW
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1451246
Title:
Intel 7265 Wifi instability workaround
Status in linux package in Ubuntu:
Confirmed
Bug description:
With both the 4.0.1 mainline kernel and this current kernel, I had a
problem with my Thinkpad T450s wifi that has an Intel 7265.
I made a comment from this report here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1437913
I will just copy paste what I wrote into here below...
"I have a Thinkpad T450s since 5/1/2015 with the same chip (though
linux wants the 7265D ucode though). It was unstable, even when
upgrading to the 4.0.1 mainline kernel. What actually kept things
stable is by disabling wireless-n.
All the details of how I fixed it from other people:
http://www.reddit.com/r/thinkpad/comments/34ln2h/t450s_ubuntu_1504_unstable_wifi/
Pretty much.... I had to get the latest 7265 ucodes and put it into /lib/firmware:
- sudo rm /lib/firmware/iwlwifi*
- sudo cp /path/to/iwlwifi-7265*-12.ucode /lib/firmware/.
- reboot....
Normal browsing seemed to be more stable but things like streams,
speed tests, and youtube would tank the connection.
Then I had to disable wireless-n:
echo 'options iwlwifi 11n_disable=1' | sudo tee -a /etc/modprobe.d/iwlwifi.conf
now it's completely stable, but I have to lose wireless-n as a result.
It's not your fault.... It's Intel's..."
-------------------------
I am testing these fixes right now on the same standard kernel and it
seems to be working fine. Hopefully this is enough information here. I
am going to main the 4.0.1 mainlaine kernel though. Should I also
report this to the mainline kernel bug report?
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-15-generic 3.19.0-15.15 [modified: boot/vmlinuz-3.19.0-15-generic]
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: epicstar 1453 F.... pulseaudio
/dev/snd/pcmC1D0p: epicstar 1453 F...m pulseaudio
/dev/snd/controlC1: epicstar 1453 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun May 3 15:43:35 2015
HibernationDevice: RESUME=UUID=9caf85bf-266f-4356-9a64-031df7edb239
InstallationDate: Installed on 2015-05-02 (1 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: LENOVO 20BXCTO1WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic.efi.signed root=UUID=b8187455-26c0-492f-bf45-755286cf5623 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.19.0-15-generic N/A
linux-backports-modules-3.19.0-15-generic N/A
linux-firmware 1.143
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/10/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET47WW (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BXCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50512 STD
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrJBET47WW(1.12):bd03/10/2015:svnLENOVO:pn20BXCTO1WW:pvrThinkPadT450s:rvnLENOVO:rn20BXCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BXCTO1WW
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
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