kernel-packages team mailing list archive

[Massimo Cesaro <massimo.cesaro@xxxxxxxxx>]

Hi, the problem happens either when running on battery or with the power supply. I tested with 3 different kernels:
 3.11.0-12-generic
 3.11.0-13-generic
 3.11.0-14-generic

The last one seems the more "stable" though the disconnect are frequent.
I tested also the latest v3.12 kernel (from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ *not* trusty), to no avail. Actually, with the 3.12 saucy the system became extremely unstable, with crashing of network-manager at boot time and preventing also running the X server.
As a stopgap measure, I'm using a small script:

service network-manager stop
rmmod rt2800pci
modprobe rt2800pci
service network-manager start

that somewhat is useful to recover the WiFi support.
Sometimes, when the connection drops and after a variable period of time 2 - 10 minutes, the wifi support seems to auto-recover, but in that case I'm never able to see my access points (they aren't listed in the Unity menu), but I can see "foreign" APs from neighboring offices. I still cannot connect to those APs (either because I have no credentials or because the authentication method is not WEP).

I will test the 3.12 trusty kernel and report the outcome.

Than you for the support.

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https://bugs.launchpad.net/bugs/1253997

Title:
  WiFi randomly disconnects

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Since upgrading to 13.10 the WiFi support has been shaky. Frequent connection drops and unstable network-manager. Only solution is a reboot, often more than one.
  I cannot connect to a WiFi network using authentication but WEP (any other authentication method gives instantaneous loss of connectivity).

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-14-generic 3.11.0-14.21
  ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
  Uname: Linux 3.11.0-14-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  massimo    1943 F.... pulseaudio
  Date: Fri Nov 22 12:54:47 2013
  HibernationDevice: RESUME=UUID=dbb9f17e-15b0-4660-8cc4-48ae5b680e58
  InstallationDate: Installed on 2013-08-19 (94 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: Hewlett-Packard HP ENVY dv6 Notebook PC
  MarkForUpload: True
  ProcFB:
   0 inteldrmfb
   1 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-14-generic root=UUID=41860cb7-9b4c-4f48-ba3f-c147d6cb7fbb ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-14-generic N/A
   linux-backports-modules-3.11.0-14-generic  N/A
   linux-firmware                             1.116
  RfKill:
   1: phy1: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2013-10-22 (31 days ago)
  dmi.bios.date: 02/18/2013
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.25
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: 181B
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 52.24
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.25:bd02/18/2013:svnHewlett-Packard:pnHPENVYdv6NotebookPC:pvr088A120000305910000620100:rvnHewlett-Packard:rn181B:rvr52.24:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP ENVY dv6 Notebook PC
  dmi.product.version: 088A120000305910000620100
  dmi.sys.vendor: Hewlett-Packard

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