Description of problem: These are two things that seem to happen together, though both are intemittent and both can occur alone. When I connect to the local wireless system at work, things connect normally. Then, over a period of about 10 minutes, performance degrades and then the network connection hangs. If I turn off the network manager and wireless and then restart them, it connects fine and the cycle repeats. Occasionally during this process, the gui for the NetworkManager in KDE gets a little flaky -- the little red "x" by WLAN that you can use to disconnect no longer works, and it is necessary to check "turn off networking" to disconnect. Note that this does not occur with my home wireless. It also does not occur with an old usb wireless adapter (ALFA AWUS5051NH) I have handy. Thus, this bug report is done at work using the usb interface card, with my on-board card hung. Configuration: Toshiba Satellite L857D-S7232 laptop. lsck results: lspci -k | grep -A 3 -i "network" 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01) Subsystem: Realtek Semiconductor Co., Ltd. Device 8211 Kernel driver in use: rtl8192ce 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05) uname -a: Linux localhost.localdomain 3.6.11-3.fc18.x86_64 #1 SMP Mon Dec 17 21:35:39 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Fedora 18 beta. All updates installed. Desktop: KDE Version-Release number of selected component (if applicable): NetworkManager-pptp-0.9.3.997-3.fc18.x86_64 NetworkManager-openvpn-0.9.3.997-3.fc18.x86_64 NetworkManager-0.9.7.0-11.git20121004.fc18.x86_64 NetworkManager-glib-0.9.7.0-11.git20121004.fc18.x86_64 NetworkManager-vpnc-0.9.3.997-3.fc18.x86_64 NetworkManager-openconnect-0.9.7.0-1.git20120918.fc18.x86_64 How reproducible: Wireless degradation: every time. Network Manager loss of interaction: once every 15 or 20 times. Steps to Reproduce: 1. Turn on computer at work (not at home) 2. Connect to wireless 3. Wait 5-10 minutes Actual results: Slow to rapid degradation -- dropped packets, delays, and then stop. Expected results: Wireless keeps working! Additional info: I had something like this happen with a different laptop with Fedora 16 or 17. It turned out at that time to be some issue with the interaction between the kernel and the driver, and resolved during an update. Unfortunately, I can't find that old bug to refer to -- and it was a different laptop with a different card. Let me know if you want me to do some traffic monitoring or something and I'll do it.
The connection problems, dropped packets, slowness, etc. are definitely rtl8192ce in-kernel driver issue. I had problems on my home computer (archlinux) as well. After recompiling the driver from RealTek, the connection works as expected. See: https://bbs.archlinux.org/viewtopic.php?pid=1149844#p1149844 https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_T400#Realtek_chipset For KDE GUI, consider search and/or file a bug on bugs.kde.org
Are you still seeing this with 3.8.x?
This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 2 weeks. If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.