Re: Edimax EW7811un + imx6dlsabresd + Krogoth

Bas Mevissen

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 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?

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

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