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karrika
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USB Ethernet AX88772 power save

Sun Jan 03, 2016 7:33 pm

I am happily running the axis device AX88772 USB-Ethernet. As long as the screen is up things go fine. But after the power save I cannot re-initialize the Ethernet. ifdown/ifup does not restore operations. A reboot does. The CPU is a PiZero.

This is part of a 4-port HUB + USB-Ethernet combo. Apart from the lack of wake-up the system works well.
Image
Any ideas of how to fix this?

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karrika
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Re: USB Ethernet AX88772 power save

Mon Jan 04, 2016 4:22 pm

I read through some bug sites and the axis driver was buggy. It was fixed a month ago and who knows if/when it will be floating into raspbian.

https://chromium.googlesource.com/chrom ... a1%5E!/#F0

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karrika
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Re: USB Ethernet AX88772 power save

Mon Jan 04, 2016 6:22 pm

Disabling powersave, poweroff and blank did make the screen stay on. But the ethernet dongle still received a new "ifup" command that put the device in a non-operating state. The only way to recover is to reboot or pull the Ethernet module from the USB HUB and insert it again.

Conclusion: The AX88772 is also crap. It works perfectly for 30 minutes.

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FTrevorGowen
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Re: USB Ethernet AX88772 power save

Mon Jan 04, 2016 6:44 pm

Hmmm... The only USB hub + ethernet combo. that I've tried (some time ago) was used a DM9601 LAN adapter, the driver of which still causes a "kernel panic"**. However all the ASIX AX88772 USB-to-Ethernet only dongles I've used (3 types, one of which I have two samples)** have not given me any problems (but, maybe, powersave has not been activated either). Just wondering if it's a "combo. only" issue?
Trev.
** Some info. here:
http://www.cpmspectrepi.webspace.virgin ... pters.html
Still running Raspbian Jessie or Stretch on some older Pi's (an A, B1, 2xB2, B+, P2B, 3xP0, P0W, 2xP3A+, P3B+, P3B, B+, and a A+) but Buster on the P4B's. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

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karrika
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Re: USB Ethernet AX88772 power save

Mon Jan 04, 2016 6:54 pm

FTrevorGowen wrote:Just wondering if it's a "combo. only" issue?
Trev.
Good point! I can actually try to connect it directly to PiZero. Will test it asap.

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karrika
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Re: USB Ethernet AX88772 power save

Thu Jan 28, 2016 7:18 pm

Tonight I was trying out some Amiga games on my PiZero based RetroPi setup.
Image

I transferred the game over Ethernet (the "bad" AX88772 USB-Ethernet dongle) to PiZero and started to play.

A few hours later I noticed that the Ethernet is still working.

The PiZero image was the Beta image based on Jessie!!!

They have obviously fixed the code since Wheezy.

This setup works like a dream. I have Ethernet, keyboard and mouse. And still one free USB port :D

Image

Code: Select all

[email protected]:~/speedtest-cli $ python speedtest_cli.py
Retrieving speedtest.net configuration...
Retrieving speedtest.net server list...
Testing from Domestic Network Association ry (83.143.57.226)...
Selecting best server based on latency...
Hosted by Nebula Oy (Helsinki) [12.41 km]: 41.93 ms
Testing download speed........................................
Download: 14.56 Mbit/s
Testing upload speed..................................................
Upload: 3.12 Mbit/s
Funny. I decided to build the PiZero RetroPi arcade without networking. And now I have it anyway in the form of an external USB-hub + Ethernet dongle.

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