Reliable USB WiFi?

DaOne
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28 Oct 2017 05:19 #100910 by DaOne

Reliable USB WiFi? was created by DaOne

I have tried 3 different USB wifi adapters and all 3 work but unreliably. They are very slow and disconnect frequently. Is there a known good one that fully works on 10.04?

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emcPT
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28 Oct 2017 07:54 #100914 by emcPT

Replied by emcPT on topic Reliable USB WiFi?

Same here with Wheezy, I tested a lot probably 1 year ago, then I quit the idea, simply unreliable.
Did not tested with Stretch.

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rodw
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30 Oct 2017 10:23 #101007 by rodw

Replied by rodw on topic Reliable USB WiFi?

After 3 USB wifi dongles, I would be questioning your access point. I replaced a cheap TP link router I installed in my garage for LinuxCNC with a not much more expensive Netgear access point and now I have reliable wifi.

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Ozzyrob
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30 Oct 2017 10:46 #101008 by Ozzyrob

Replied by Ozzyrob on topic Reliable USB WiFi?

I tired a couple of different wifi routers and the best I found was a TP-Link TL-WR1043N/ND v1 with OpenWrt firmware.

Rather than go with USB dongle grab a wifi router and use it as bridge between your Ethernet port and existing wifi network.

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DaOne
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31 Oct 2017 05:10 #101042 by DaOne

Replied by DaOne on topic Reliable USB WiFi?

Its not the router. I have many devices on this router and the only one with a problem is this machine. Its a know issue that the drivers in 10.04 are problematic. Tormach sells a USB adapter but even the one they sell has reports of being unreliable.

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tecno
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31 Oct 2017 09:08 #101043 by tecno

Replied by tecno on topic Reliable USB WiFi?

I have the same problem, access point is working OK in my workshop with other units (phone/tablet) but not my LCNC PC.

TP-Link TL-WN725N is not even detected but works just fine with my RPi:s.
Is there some drivers to be installed or what?

Tried other much older USB dongle type WiFi with same result but working OK with RPi.
USB port is fully functional with USB Memory that I use for file transfer.

Any ideas?

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Ozzyrob
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31 Oct 2017 09:16 - 31 Oct 2017 09:18 #101044 by Ozzyrob

Replied by Ozzyrob on topic Reliable USB WiFi?

Seems you need rtl8188eu driver

Ubuntu write up here:
askubuntu.com/questions/678134/how-to-in...u-ubuntu-14-04-3-lts

But I'd try lsusb and to get the vendor:device id and go from there.

To find out what driver your RPi is using run lsmod with the dongle in and lsmod with the dongle out, compare the outputs and that should give you an idea of the driver needed.

Last edit: 31 Oct 2017 09:18 by Ozzyrob.

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tecno
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31 Oct 2017 10:14 #101046 by tecno

Replied by tecno on topic Reliable USB WiFi?

lsub
ID 0bda:8187 >>> this is the older wifi dongle with RTL8187

ID:0bda:8179 >>> TL-WN725N

pi@raspberrypi:~ $ lsmod  >>>>> Original RPi
Module                  Size  Used by
bnep                   12051  2 
hci_uart               20020  1 
btbcm                   7916  1 hci_uart
bluetooth             365511  22 hci_uart,bnep,btbcm
brcmfmac              222874  0 
brcmutil                9092  1 brcmfmac
cfg80211              543027  1 brcmfmac
rfkill                 20851  4 bluetooth,cfg80211
snd_bcm2835            24427  1 
snd_pcm                98501  1 snd_bcm2835
snd_timer              23968  1 snd_pcm
snd                    70032  5 snd_timer,snd_bcm2835,snd_pcm
bcm2835_gpiomem         3940  0 
evdev                  12423  6 
joydev                  9988  0 
usbtouchscreen         13983  0 
fixed                   3285  0 
uio_pdrv_genirq         3923  0 
uio                    10204  1 uio_pdrv_genirq
i2c_dev                 6913  0 
fuse                   99603  3 
ipv6                  408971  60 
pi@raspberrypi:~ $ 


pi@raspberrypi:~ $ lsmod  >>>>> Older RTL8187 USB Dongle
Module                  Size  Used by
ctr                     4263  4 
ccm                     9009  2 
arc4                    2211  2 
rtl8187                33671  0 
eeprom_93cx6            4138  1 rtl8187
mac80211              655480  1 rtl8187
bnep                   12051  2 
hci_uart               20020  1 
btbcm                   7916  1 hci_uart
bluetooth             365511  22 hci_uart,bnep,btbcm
brcmfmac              222874  0 
brcmutil                9092  1 brcmfmac
cfg80211              543027  3 mac80211,brcmfmac,rtl8187
rfkill                 20851  5 bluetooth,cfg80211
snd_bcm2835            24427  1 
snd_pcm                98501  1 snd_bcm2835
snd_timer              23968  1 snd_pcm
snd                    70032  5 snd_timer,snd_bcm2835,snd_pcm
bcm2835_gpiomem         3940  0 
evdev                  12423  6 
joydev                  9988  0 
usbtouchscreen         13983  0 
fixed                   3285  0 
uio_pdrv_genirq         3923  0 
uio                    10204  1 uio_pdrv_genirq
i2c_dev                 6913  0 
fuse                   99603  3 
ipv6                  408971  46 
pi@raspberrypi:~ $ 


pi@raspberrypi:~ $ lsmod   >>> TL-WN725N
Module                  Size  Used by
sg                     20825  0 
r8188eu               439218  0 
ctr                     4263  0 
ccm                     9009  0 
arc4                    2211  0 
rtl8187                33671  0 
eeprom_93cx6            4138  1 rtl8187
mac80211              655480  1 rtl8187
bnep                   12051  2 
hci_uart               20020  1 
btbcm                   7916  1 hci_uart
bluetooth             365511  22 hci_uart,bnep,btbcm
brcmfmac              222874  0 
brcmutil                9092  1 brcmfmac
cfg80211              543027  4 mac80211,r8188eu,brcmfmac,rtl8187
rfkill                 20851  5 bluetooth,cfg80211
snd_bcm2835            24427  1 
snd_pcm                98501  1 snd_bcm2835
snd_timer              23968  1 snd_pcm
snd                    70032  5 snd_timer,snd_bcm2835,snd_pcm
bcm2835_gpiomem         3940  0 
evdev                  12423  6 
joydev                  9988  0 
usbtouchscreen         13983  0 
fixed                   3285  0 
uio_pdrv_genirq         3923  0 
uio                    10204  1 uio_pdrv_genirq
i2c_dev                 6913  0 
fuse                   99603  3 
ipv6                  408971  46 
pi@raspberrypi:~ $

Am I correct assuming a RTL-8187 driver would do the job for both WiFi dongles?

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Ozzyrob
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31 Oct 2017 23:15 #101089 by Ozzyrob

Replied by Ozzyrob on topic Reliable USB WiFi?

No it's the r8188eu driver (which seems to be a vendor supplied kernel). The Ubuntu references I found mention rtl8188eu. To be honest I really haven't delved into the differences. One may have been merged into later mainline kernels.

Based on the id this is some info
wikidevi.com/wiki/TP-LINK_TL-WN725N_v2

Unfortunately I've gone to the darkside and am running machinekit on a BeagleBone Black with a custom designed & made cape and daughter boards.

For my main OS I do run Linux Mint 18.1. I do have some usb dongles that are basically a wikidevi.com/wiki/TP-LINK_TL-WN725N_v1.

After plugging in the dongle and then running dmesg i get the following output.

[ 1475.084132] usb 2-2: new high-speed USB device number 3 using ehci-pci
[ 1475.233839] usb 2-2: New USB device found, idVendor=0bda, idProduct=8176
[ 1475.233846] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1475.233851] usb 2-2: Product: 802.11n WLAN Adapter
[ 1475.233856] usb 2-2: Manufacturer: Realtek
[ 1475.233860] usb 2-2: SerialNumber: 00e04c000001
[ 1475.234829] rtl8192cu: Chip version 0x10
[ 1475.334956] rtl8192cu: Board Type 0
[ 1475.335195] rtl_usb: rx_max_size 15360, rx_urb_num 8, in_ep 1
[ 1475.335244] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw_TMSC.bin
[ 1475.337858] ieee80211 phy2: Selected rate control algorithm 'rtl_rc'
[ 1476.492556] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[ 1476.496464] rtl8192cu: MAC auto ON okay!
[ 1476.529624] rtl8192cu: Tx queue select: 0x05
[ 1476.942504] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[ 1477.011286] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready

As you can see the driver loaded is rtl8192cu.

If you can run uname -a on both the Rpi and your Linuxcnc machine that will nail the kernel versions and help nail the required driver. To be perfectly honest I am not overly impressed by the performance of usb wifi dongles, but that's just a personal opinion, and also could be due to computer placement and wifi AP\router locations in my house.

Yeah it can be a bit confusing...different distros, kernel versions and hardware versions of dongles. If you have the patience I can have a good go at helping you out.

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tecno
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01 Nov 2017 14:13 - 01 Nov 2017 14:24 #101134 by tecno

Replied by tecno on topic Reliable USB WiFi?

No Go with TP-Link. Did some digging and found old Zonet ZEW2500P that is recognized.

bengt@CNC3000:~$ lsusb
Bus 001 Device 002: ID 148f:2570 Ralink Technology, Corp. RT2570 Wireless Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 05d5:6781 Super Gate Technology Co., Ltd 
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
bengt@CNC3000:~$ lsmod
Module                  Size  Used by
iTCO_wdt               16384  0
iTCO_vendor_support    16384  1 iTCO_wdt
ppdev                  20480  0
arc4                   16384  2
joydev                 20480  0
evdev                  20480  10
rt2500usb              32768  0
rt2x00usb              20480  1 rt2500usb
rt2x00lib              49152  2 rt2x00usb,rt2500usb
mac80211              577536  2 rt2x00lib,rt2x00usb
cfg80211              462848  2 rt2x00lib,mac80211
rfkill                 20480  3 cfg80211
coretemp               16384  0
serio_raw              16384  0
pcspkr                 16384  0
sg                     32768  0
lpc_ich                20480  0
mfd_core               16384  1 lpc_ich
snd_hda_codec_realtek    61440  1
snd_hda_codec_generic    65536  1 snd_hda_codec_realtek
rng_core               16384  0
parport_pc             28672  0
parport                40960  2 parport_pc,ppdev
snd_hda_intel          32768  3
snd_hda_codec          94208  3 snd_hda_intel,snd_hda_codec_generic,snd_hda_codec_realtek
i915                 1175552  3
snd_hda_core           57344  4 snd_hda_intel,snd_hda_codec,snd_hda_codec_generic,snd_hda_codec_realtek
snd_hwdep              16384  1 snd_hda_codec
video                  36864  1 i915
snd_pcm                86016  3 snd_hda_intel,snd_hda_codec,snd_hda_core
drm_kms_helper        114688  1 i915
snd_timer              28672  1 snd_pcm
snd                    57344  13 snd_hda_intel,snd_hwdep,snd_hda_codec,snd_timer,snd_hda_codec_generic,snd_hda_codec_realtek,snd_pcm
drm                   253952  5 i915,drm_kms_helper
soundcore              16384  1 snd
shpchp                 32768  0
i2c_algo_bit           16384  1 i915
button                 16384  1 i915
acpi_cpufreq           20480  0
ip_tables              20480  0
x_tables               20480  1 ip_tables
autofs4                36864  2
ext4                  512000  1
crc16                  16384  1 ext4
jbd2                   77824  1 ext4
crc32c_generic         16384  2
fscrypto               24576  1 ext4
ecb                    16384  0
xts                    16384  0
lrw                    16384  0
gf128mul               20480  2 lrw,xts
ablk_helper            16384  0
cryptd                 20480  1 ablk_helper
aes_i586               20480  0
mbcache                16384  2 ext4
hid_generic            16384  0
usbhid                 45056  0
hid                    94208  2 hid_generic,usbhid
sd_mod                 40960  3
ata_generic            16384  0
ata_piix               32768  2
libata                192512  2 ata_piix,ata_generic
ehci_pci               16384  0
uhci_hcd               40960  0
psmouse               114688  0
ehci_hcd               65536  1 ehci_pci
i2c_i801               24576  0
scsi_mod              180224  3 sd_mod,libata,sg
r8169                  73728  0
i2c_smbus              16384  1 i2c_i801
mii                    16384  1 r8169
usbcore               184320  7 rt2x00lib,usbhid,rt2x00usb,ehci_hcd,uhci_hcd,rt2500usb,ehci_pci
usb_common             16384  1 usbcore
fan                    16384  0
thermal                20480  0
bengt@CNC3000:~$

bengt@CNC3000:~$ uname -a
Linux CNC3000 4.9.0-3-rt-686-pae #1 SMP PREEMPT RT Debian 4.9.30-2+deb9u2 (2017-06-26) i686 GNU/Linux

WiFi is found, I have 2 different working and this PC can not go on-line, both these work OK with other devices.
But this works fine via cable to one these adapters I have, this is written from the shop.

As I only have 1 RJ45 port that will be occupied with Mesa 7i76e I need WiFi to get updates etc not having to fiddle with RJ45 cable.

This Zonet is noty tested yet on RPi but will be shortly. Results NOW TESTED and working OK on RPi

Last edit: 01 Nov 2017 14:24 by tecno. Reason: added test result

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