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aircrack-ng / rtl8814au

Realtek rtl8814au driver
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Unable to switch to usb 3.0 #41

Open thindata opened 3 years ago

thindata commented 3 years ago

When using with an Asus USB-AC68 and applying

sh -c "echo '1' > /sys/module/8814au/parameters/rtw_switch_usb_mode"

after a reboot the file reverts to 0

cat /sys/module/8814au/parameters/rtw_switch_usb_mode
0
Device Descriptor:
  bcdUSB               2.00
  idVendor           0x0b05 ASUSTek Computer, Inc.
  idProduct          0x1817 USB-AC68 802.11a/b/g/n/ac (4x4) Wireless Adapter [Realtek RTL8814AU]
cat /sys/module/8814au/parameters/rtw_switch_usb_mode
0
gebau00a commented 3 years ago

Place a file named 8814au.conf under /etc/modprobe.d Put in there options 8814au rtw_switch_usb_mode=1

The option is then applied whenever the module is loaded.

Else, how should the module know which options you want to use?

terrysimons commented 3 years ago

Can confirm that options 8814au rtw_switch_usb_mode=1 placed in /etc/modprobe.d/8814au.conf works for me:

terry@sniffer01:~$ cat /etc/modprobe.d/8814au.conf 
options 8814au rtw_switch_usb_mode=1
terry@sniffer01:~$ cat /sys/module/8814au/parameters/rtw_switch_usb_mode 
1
terry@sniffer01:~$
thindata commented 3 years ago

After adding that to the file and rebooting the wifi adapter is no longer detected but if I remove and reinsert it's detected ok and switched to usb 3.0 . What would the cause the issue with it not being detected during boot?

terrysimons commented 3 years ago

Might be a bug in the XHCI drivers on your system, or you had a bad connection, or maybe the cable has issues.

Does it happen every time you boot, or only that one time?

If it happens on every boot, it's probably worth filing a kernel bug and helping them collect info needed to fix the issue.

If it only happens sometimes, you might try replacing your USB 3.0 cable and see if that's any better.

gebau00a commented 3 years ago

After adding that to the file and rebooting the wifi adapter is no longer detected but if I remove and reinsert it's detected ok and switched to usb 3.0 . What would the cause the issue with it not being detected during boot?

Check via lsusb -t if the device is shown. Also try to switch the mode manually to 0 via the sys interface and check via lsusb again, if it's detected.

I assume the same as Terry, when I switch to USB 3.0 it also falls back to USB 2.0 as my connected cable is too long.