I have bug like this on my Lenovo t420. Sometimes after a wake up I can't connect to any wireless network. In these cases dmesg shows a lot of messages like this:
[43261.458904] rtl8192c: Loading firmware file rtlwifi/rtl8192cfw.bin [43266.792244] rtl8192c: Loading firmware file rtlwifi/rtl8192cfw.bin [43267.979418] wlan0: direct probe to 00:1f:c6:3d:37:f0 (try 1/3) [43268.176717] wlan0: direct probe to 00:1f:c6:3d:37:f0 (try 2/3) [43268.376160] wlan0: direct probe to 00:1f:c6:3d:37:f0 (try 3/3) [43268.575719] wlan0: direct probe to 00:1f:c6:3d:37:f0 timed out or like this (in these cases it asks for a password for a network but still can't connect) [43307.536142] rtl8192c: Loading firmware file rtlwifi/rtl8192cfw.bin [43308.726982] wlan0: direct probe to 00:1f:c6:3d:37:f0 (try 1/3) [43308.824485] wlan0: direct probe responded [43308.832044] wlan0: authenticate with 00:1f:c6:3d:37:f0 (try 1) [43309.027895] wlan0: authenticate with 00:1f:c6:3d:37:f0 (try 2) [43309.227439] wlan0: authenticate with 00:1f:c6:3d:37:f0 (try 3) [43309.426985] wlan0: authentication with 00:1f:c6:3d:37:f0 timed out I've figured out that workaround is to reload wi-fi modules: $ sudo rmmod rtl8192ce $ sudo rmmod rtlwifi $ sudo modprobe rtl8192ce $ sudo modprobe rtlwifi So, I suppose, that the modules just do not return to the proper state after a wake up. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/844124 Title: Wireless network unavilable after waking from sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/844124/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
