kernel-packages team mailing list archive

[Jos Dehaes <1417552@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Hi,

I have a Sony Vaio Pro 11 which has a intel 7260 wifi chip. I've had
nothing but trouble with it (and from reading forums, I'm not alone). I
file this bug to help fix issues.

My findings with recent kernels: laptop has Ubuntu Vivid installed,
which comes with the 3.18 kernel and 23.11.10 firmware. With the -10
firmware, often the wifi doesn't even associate with the access point,
while all other devices in the house can. When it does connect, the
speed is fast for about 1 second (around 10 MB/s), en then drops to
20-60 kbps, or loses connection altogether. With self-compiled 3.19-rc6
(with latest iwlwifi-fixes merged) it's the same. I tried the 23.12.10
firmware, but it is the same.

When I switch to the 25.228.9 firmware, it is much better, however,
speed still drops every now and then, but much less than with the -10
firmware. Kernel version doesn't seem to matter much, firmware version
seems to drive all variability.

This problem is for both bands 2.4 GHz and 5 GHz.

I can provide all debugging info you request. I will provide the minimum
logging tonight when I get home.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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https://bugs.launchpad.net/bugs/1417552

Title:
  iwlwifi 7260 loses connection, performance degrades

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Hi,

  I have a Sony Vaio Pro 11 which has a intel 7260 wifi chip. I've had
  nothing but trouble with it (and from reading forums, I'm not alone).
  I file this bug to help fix issues.

  My findings with recent kernels: laptop has Ubuntu Vivid installed,
  which comes with the 3.18 kernel and 23.11.10 firmware. With the -10
  firmware, often the wifi doesn't even associate with the access point,
  while all other devices in the house can. When it does connect, the
  speed is fast for about 1 second (around 10 MB/s), en then drops to
  20-60 kbps, or loses connection altogether. With self-compiled
  3.19-rc6 (with latest iwlwifi-fixes merged) it's the same. I tried the
  23.12.10 firmware, but it is the same.

  When I switch to the 25.228.9 firmware, it is much better, however,
  speed still drops every now and then, but much less than with the -10
  firmware. Kernel version doesn't seem to matter much, firmware version
  seems to drive all variability.

  This problem is for both bands 2.4 GHz and 5 GHz.

  I can provide all debugging info you request. I will provide the
  minimum logging tonight when I get home.

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