Problem with realtek wireless adapter (needed to extend wireless range),
which works fine in Raspbian Jessie, but will not connect in Raspbian Stretch
Fresh install of Raspbian Stretch
Reboot with CSL 300MBit/s USB wireless adapter (in powered hub) which uses
realtek RTL8191SU chipset supported by r8712u kernel module
Configured /etc/wpa_supplicant/wpa_supplicant.conf correctly (via gui)
ls -1 /sys/class/net says:
enxb827ebf3cefa
lo
wlan0
wlx24050f6664f6
where last entry is correct predictable name for wireless adapter
sudo iwlist wlx24050f6664f6 scan - lists available wireless networks
However adapter resolutely refuses to connect !
iwconfig gives :
wlx24050f6664f6 unassociated Nickname:"rtl_wifi"
Mode:Auto Access Point: Not-Associated Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
wlan0 IEEE 802.11 ESSID:"D & A Visitors"
Mode:Managed Frequency:2.432 GHz Access Point: **:**:**:**:**:**
Bit Rate=72.2 Mb/s Tx-Power=31 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=70/70 Signal level=-34 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
where I have suppressed the true MAC address of the Access Point
A ralink adapter, substituted for the realtek, works fine (without powered hub)
with both internal and external adapters connecting simultaneously
With Jessie this realtek adapter also works fine (without powered hub)
with both internal and external adapters connecting simultaneously