Bug 99821

Summary: rtl8192cu does not work after unplug/replug
Product: Drivers Reporter: Michal Suchanek (hramrach)
Component: network-wirelessAssignee: drivers_network-wireless (drivers_network-wireless)
Status: NEW ---    
Severity: normal CC: Larry.Finger, linville, theo148
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 4.0.2 Subsystem:
Regression: No Bisected commit-id:

Description Michal Suchanek 2015-06-11 15:21:49 UTC 
Hello,

with rtl8192cu when the card is unplugged and replugged only 802.11b APs can be scanned until the rtl8192cu module is reloaded. Reloading the module brings back full functionality.

[ 1795.052164] usb 1-6.1: new high-speed USB device number 17 using ehci-pci
[ 1795.165659] usb 1-6.1: New USB device found, idVendor=0bda, idProduct=8176
[ 1795.172518] usb 1-6.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1795.179820] usb 1-6.1: Product:
[ 1795.183134] usb 1-6.1: Manufacturer: Re\xffffffc2\xffffff8tek
[ 1795.187482] usb 1-6.1: SerialNumber: 00e04c000001
[ 1795.192906] rtl8192cu: Chip version 0x10
[ 1795.273409] rtl8192cu: MAC address: 00:0b:81:88:68:f9
[ 1795.278464] rtl8192cu: Board Type 0
[ 1795.282280] rtl_usb: rx_max_size 15360, rx_urb_num 8, in_ep 1
[ 1795.288044] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw_TMSC.bin
[ 1795.294584] ieee80211 phy7: Selected rate control algorithm 'rtl_rc'
[ 1795.297077] usb 1-6.1: firmware: direct-loading firmware rtlwifi/rtl8192cufw_TMSC.bin
[ 1799.215406] rtl8192cu: MAC auto ON okay!
[ 1799.255184] rtl8192cu: Tx queue select: 0x05
[ 1799.658328] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 1830.453307] usbcore: deregistering interface driver rtl8192cu
[ 1834.517417] usb 1-6.1: USB disconnect, device number 17