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[Q] Archos G9 101 - Linux kernel 3G usb port

OP jojojoris

20th January 2014, 09:25 PM   |  #1  
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Hello,

Does someone know how archos managed to block certain devices from the 3G usb port? I am studying the kernel source codes and the filesystems of several roms and a cannot find any references to some blocked devices. (Yes I am a expeienced C(++)/linux developer) Most devices do work on the OTG port.

Memory sticks seem to work but when i plugin a mouse of keyboard the folowing line appears in dmesg:
hub 1-0:1.0: Cannot enable port 1. Maybe the USB cable is bad?


What is different on the 3G Usb port?

Joris
21st January 2014, 05:08 AM   |  #2  
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Good question. I'm not a developer but I have had that happen on a few (older) USB drives as well. Surely it couldn't be and old usb1.0 standard or anything that isnt enabled?
13th February 2014, 09:54 PM   |  #3  
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I just figured that it was a power issue thumb drives use almost no power, I'm thinking that archos designed the 3g stick/port to provide power on the low end of USB spec 5v DC and 0.5-0.9 amps.
16th February 2014, 12:46 AM   |  #4  
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I'm just going to link to my other post HERE about a powered USB hub. has anyone use a external battery to charge tab and do you get fast or slow charge?
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