I've been able to reproduce a similar problem to chuxinxin and collected logs.
Distro: Ubuntu 14.04 with Ubuntu mainline 3.16rc4 uname -a: Linux Cockatoo 3.16.0-031600rc4-generic #201407061635 SMP Sun Jul 6 20:36:26 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Step-by-step procedure to reproduce: 1. Boot system with r8192ee module blacklisted 2. modprobe r8192ee 3. Connect to wireless network with NetworkManager 4. Connection works well for a while 5. Connection suddenly disconnects 6. The wireless network is no longer visible in NetworkManager, but others remain visible. 7. Kill NetworkManager and wpa_supplicant 8. NetworkManager no longer shows device 9. Attempt to modprobe -r r8192ee renders system unresponsive The attached tarball include lsmod, dmesg and syslog. I split the logs into before/after killing NetworkManager & wpa_supplicant since there was a lot of spam in the logs after that event. It may be relevant that this was done in an environment with a lot of radio interference and dropped packets. ** Attachment added: "r8192ee-3.16rc4-armstrong.tar.gz" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1239578/+attachment/4148033/+files/r8192ee-3.16rc4-armstrong.tar.gz -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1239578 Title: No wireless support for Realtek RTL8192EE [10ec:818b] Status in HWE Next Project: Confirmed Status in HWE Next trusty series: Confirmed Status in “linux” package in Ubuntu: Confirmed Bug description: Open this bug to trace device driver RTL8192EE. We have seen this wireless card on some laptops, id is [10ec:818b], driver is RTL8192EE. Status: waiting for this driver being moved out of staging directory. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1239578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
