[Pcsclite-muscle] DUAli DE-620 Smart Card Reader Connection Cycles on and off

Yusuf Gürkan Bor yusufgurkan.bor at gmail.com
Wed Sep 12 01:39:46 PDT 2018


We tried linking DE-620 in two different PC's, one with a dual boot of
Win10 and Ubuntu 16.04, the other with a Ubuntu 16.04. The reader
works fine in Win10. I'll try an externally powered USB hub, but if it
does not work most likely the issue is related to the USB controllers
at the kernel level. I'll guess I'll have to fiddle around with some
modules.

Thank you,

Gürkan

On Fri, Sep 7, 2018 at 6:03 PM Bruno Jesus <00cpxxx at gmail.com> wrote:
>
> On Fri, Sep 7, 2018 at 10:54 AM Yusuf Gürkan Bor <yusufgurkan.bor at gmail.com> wrote:
>>
>> I have indeed confirmed that something strange is happening at the usb layer
>>
>> dmesg has outputted something like this:
>>
>> ...
>> [25992.815863] usb 3-2: USB disconnect, device number 45
>> [25993.419573] usb 3-2: new full-speed USB device number 46 using xhci_hcd
>> [25993.569084] usb 3-2: New USB device found, idVendor=1db2, idProduct=0630
>> [25993.569090] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>> [25993.569093] usb 3-2: Product: DE-620
>> [25993.569096] usb 3-2: Manufacturer: DUALi
>> [25993.569098] usb 3-2: SerialNumber: B71468D80508
>> [25993.592290] usb 3-2: USB disconnect, device number 46
>> [25994.195498] usb 3-2: new full-speed USB device number 47 using xhci_hcd
>> [25994.344798] usb 3-2: New USB device found, idVendor=1db2, idProduct=0630
>> [25994.344802] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>> [25994.344804] usb 3-2: Product: DE-620
>> [25994.344806] usb 3-2: Manufacturer: DUALi
>> [25994.344808] usb 3-2: SerialNumber: B71468D80508
>> [25994.364300] usb 3-2: USB disconnect, device number 47
>> ...
>> and so on. Of note: the device the company possesses has in ID of 1db2:0630.
>> Thanks for all the help.
>>
>
> In bad motherboards the USB ports may not be able to supply the required current so this can happen a lot, specially when you put a card over the reader since the power consumption raises. You can try with a external powered USB hub. I have used the DE-620 for many years but didn't have this specific problem.
>
> Best wishes,
> Bruno



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