I can confirm this bug. I've got a Lenovo Yoga 2 Pro. Ubuntu 12.04.4 3.11.0-15-generic iwlwifi firmware 22.0.7.0 power management enabled: 90 Mbps (that is my max possible internet speed, haven't tried any local file transfers tough maybe it is even faster) power management disabled: 90 Mbps --> PM does not seem to have an effect on the wifi speed but the connection isn't stable at all. It reconnect aproximately ever 2 minutes.
Ubuntu 14.04 3.13.0.-17-generic iwlwifi firmware 22.24.8.0 power management enabled: 4-24 Mbps (<- signal strength changes) power management disabled: 32 Mbps (<- signal strength seems to be always good) --> Here I don't have any disconnects and PM has an influence but additionally the speed is generally a lot slower. 3.14.0-031400rc6-generic firmware 22.24.8.0 --> I cannot notice different behavior compared to previous kernel, at least no noteworthy differences -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1289961 Title: Power management causes Intel wifi 7260 slowness To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
