On Thu, Mar 16, 2017 at 04:26:10PM +0200, korgman wrote: > Hello there, > > I have the same problem as reported here. > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627828 > > and here > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1629603
This could be caused by power save, which is disable by default in the driver but some programs/distribution seems to enable it without user knowlage. First check: $ iw dev wlan0 get power_save and if PS is enabled, disable by: $ iw dev wlan0 set power_save off and check if problem still happen. > If I understood correctly (form 2nd link) the latest good kernel was 4.4.4 > after 4.4.6 we have the problem. (see message #5) > > I quote: > "Not a full bisection yet but I have narrowed it down: > > I looked at all kernel versions that had changes committed to iwlwifi and > tested between them. > > I now have determined that I do not have this issue in the kernel version > 4.4.4. > > I do have the issue in 4.4.6 and that is the next kernel version that has > changes to iwlwifi so I guess that is the first bad version." This does not make sense as 3945 device is handled by iwl3495 (iwlegacy) driver, not by iwlwifi. Stanislaw
