On 07.02.2017 21:54, David A. De Graaf wrote: > The r8712u driver from the staging area has stopped working in Fedora > 25. This driver supports (among others) my emergency USB DLink DWA-130 > adapter that I use when the laptop's built in wireless (Qualcomm > Atheros QCA9377 802.11ac) is "too advanced" to connect to some old > wireless router. > > The r8712u driver works just fine in Fedora 24 and it seems to be > substantially unchanged. > > I ran 'modinfo r8712u' on both F24 and F25 and diff'd them. > The only differences are in the filesystem locations and labelling. > There was no other substantial difference. > > I've monitored dmesg while plugging the DLink adapter in and it's > apparent that > 1 - it is detected with proper vendor and product IDs. > 2 - the r8712u module is selected and registered. > 3 - the correct firmware is loaded from rtlwifi/rtl8712u.bin > 4 - an endless stream of messages ensues: > [ 262.524809] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready > and, of course, the new interface never becomes available to > NetworkManager. > > > What's gone wrong? > Why does the same driver work in Fedora 24 but not in Fedora 25? > How do I regain operability? > > You can try the following two options: - Disable Pre-association / Scanning random MAC address; /etc/NetworkManager/NetworkManager.conf ... [device] # default: # wifi.scan-rand-mac-address=yes # See 'man 5 NetworkManager.conf' # https://blogs.gnome.org/thaller/2016/08/26/mac-address-spoofing-in-networkmanager-1-4-0 # Disable Pre-association / Scanning random MAC address for r8712u WEXT driver, # it breaks wpa_supplicant wifi.scan-rand-mac-address=no OR - Switch to one of the modern version of the driver, r92su is easier to set up because it uses the same firmware as r8712u; $ git clone https://github.com/chunkeey/rtl8192su.git $ cd rtl8192su/ $ make -f Makefile.r92su $ su # echo "blacklist r8712u" >> /etc/modprobe.d/wifi-blacklist.conf # systemctl stop NetworkManager.service # modprobe -rv r8712u # cp r92su/r92su.ko /lib/modules/$(uname -r)/updates # depmod # modinfo r92su # modprobe -v r92su # systemctl start NetworkManager.service # exit $ nm-connection-editor Tested with: kernel-4.9.8-1001.fc24.x86_64 NetworkManager-1.7.1-0.4.20170207gitca5f915.fc24.x86_64 nm-connection-editor-1.4.5-0.4.20170207gitd898ecf.fc24.x86_64 iperf-2.0.8-6.fc24.x86_64 = Throughput Test = RTL8188SU 802.11n WLAN Adapter ≈≈≈≈≈≈≈≈≈≈≈≈ AP(Wi-Fi == bridge == 100Mbit switch) ============ SERVER Server mode: $ iperf -s -i 1 ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ------------------------------------------------------------ [ 4] local <SERVER> port 5001 connected with <CLIENT> port 47460 [ ID] Interval Transfer Bandwidth [ 4] 0.0- 1.0 sec 9.10 MBytes 76.3 Mbits/sec [ 4] 1.0- 2.0 sec 10.4 MBytes 87.0 Mbits/sec [ 4] 2.0- 3.0 sec 10.3 MBytes 86.4 Mbits/sec [ 4] 3.0- 4.0 sec 9.78 MBytes 82.0 Mbits/sec [ 4] 4.0- 5.0 sec 9.78 MBytes 82.0 Mbits/sec [ 4] 5.0- 6.0 sec 9.87 MBytes 82.8 Mbits/sec [ 4] 6.0- 7.0 sec 9.74 MBytes 81.7 Mbits/sec [ 4] 7.0- 8.0 sec 9.85 MBytes 82.6 Mbits/sec [ 4] 8.0- 9.0 sec 9.62 MBytes 80.7 Mbits/sec [ 4] 9.0-10.0 sec 9.14 MBytes 76.7 Mbits/sec [ 4] 0.0-10.1 sec 98.4 MBytes 81.7 Mbits/sec ~~~~~~~~~~~~ Client mode: $ iperf -c <SERVER> -i 1 ------------------------------------------------------------ Client connecting to <SERVER>, TCP port 5001 TCP window size: 85.0 KByte (default) ------------------------------------------------------------ [ 3] local <CLIENT> port 47460 connected with <SERVER> port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 1.0 sec 9.50 MBytes 79.7 Mbits/sec [ 3] 1.0- 2.0 sec 10.4 MBytes 87.0 Mbits/sec [ 3] 2.0- 3.0 sec 10.4 MBytes 87.0 Mbits/sec [ 3] 3.0- 4.0 sec 9.75 MBytes 81.8 Mbits/sec [ 3] 4.0- 5.0 sec 9.88 MBytes 82.8 Mbits/sec [ 3] 5.0- 6.0 sec 9.75 MBytes 81.8 Mbits/sec [ 3] 6.0- 7.0 sec 9.62 MBytes 80.7 Mbits/sec [ 3] 7.0- 8.0 sec 10.1 MBytes 84.9 Mbits/sec [ 3] 8.0- 9.0 sec 9.38 MBytes 78.6 Mbits/sec [ 3] 9.0-10.0 sec 9.62 MBytes 80.7 Mbits/sec [ 3] 0.0-10.0 sec 98.4 MBytes 82.3 Mbits/sec _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
