[Libdlo] can't get fb device to show up

Dan Lazewatsky dlaz at cse.wustl.edu
Tue Jun 29 07:51:55 PDT 2010


Hi Bernie, thanks for the reply -
When I plug the screen in, bConfigurationValue is indeed set to 2, but  
changing it to 1 doesn't seem to do anything. Is there anything else I  
need to do to make the system pick up the change?

Thanks,
-Dan
On Jun 28, 2010, at 5:27 PM, Bernie Thompson wrote:

> On Mon, Jun 28, 2010 at 2:44 PM, Dan Lazewatsky <dlaz at cse.wustl.edu>  
> wrote:
>> Any help would be appreciated,
>
> Hi Dan,
>
> We avoid this kind of design with Plugable's devices, so I don't have
> them around, unfortunately.
>
> What I'd recommend first is trying to set the configuration in /sys by
> hand to make sure the script is looking in the right places. You can
> find the displaylink usb device in sysfs with:
>
> find /sys -name idVendor | xargs grep "17e9"
>
> Then head to that directory and "sudo echo 1 > bConfigurationValue" to
> set configuration 1.
>
> If the DisplayLink screen goes green, then that's it.  If you find the
> instructions for users with these kind of devices should be updated,
> any fixes to the wiki page you pointed at are very welcome.
>
> Best wishes,
> Bernie
> http://plugable.com/



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