Hi all.


Anyone has experience with wifi dongle, imx6dlsabresd on kernel linux-imx 4.1.15?


Best regards,

  Mauro

On 2018-06-18 14:41, Mauro Ziliani wrote:

Hi all.
Anyone has experience with wifi dongle, imx6dlsabresd on kernel
linux-imx 4.1.15?

Not specifically this one, but on an RTL8812AU based wifi dongle on the same kernel for i.mx 6sx. That went pretty well.

What is your problem? It is used a lot in the rPi world.

BR,

Bas.

Thanks for the answer.

My dongle is based on RTL8192CU.

All works fine, but after a small time of inactivity, it's like the dongle go to sleep, but this is not true.

Example

Time0: I try to upload a file into the board with scp

  scp muapp root@board:/home/root

and the file is uploaded


Time1 (after some mintues): I retry the upload, but the scp doens't start the transfer

So I go to the board and looking into dmesg I don't see anything about the dongle.

I make a ping on from the board to the host and scp restart.


In another cases I need to restart connmand.


MZ

On 2018-06-19 10:16, Mauro Ziliani wrote:

Please don't top post. I reordered the message to keep it readable.

Il 18/06/2018 17:07, Bas Mevissen ha scritto:

On 2018-06-18 14:41, Mauro Ziliani wrote:

Hi all.
Anyone has experience with wifi dongle, imx6dlsabresd on kernel
linux-imx 4.1.15?

Not specifically this one, but on an RTL8812AU based wifi dongle on the same kernel for i.mx 6sx. That went pretty well.
What is your problem? It is used a lot in the rPi world.

Thanks for the answer.
My dongle is based on RTL8192CU.
All works fine, but after a small time of inactivity, it's like the
dongle go to sleep, but this is not true.

Some things I can think of:

- Is the 5V still there after a few minutes of inactivity?
- Check the settings for usb autosuspend in /sys
- Does the wifi dongle stay connected to the wifi AP?

Example
Time0: I try to upload a file into the board with scp
  scp muapp root@board:/home/root
and the file is uploaded
Time1 (after some mintues): I retry the upload, but the scp doens't
start the transfer
So I go to the board and looking into dmesg I don't see anything about
the dongle.
I make a ping on from the board to the host and scp restart.

If you let it ping all the time, does it also appear to sleep?

In another cases I need to restart command.

You could try the exact same driver code on an Intel PC. That gives some hint on whether this is something on the i.MX platform/kernel or on the driver/hardware. Depending on the outcome, try with a different driver (for rtl8812au I know there are a few). You might compare the /sys settings as well.


-- bas