On Friday, February 20, 2015 09:29:20 AM Hans Petter Selasky wrote:
> On 02/20/15 02:15, Shawn Webb wrote:
> > On Thursday, February 19, 2015 07:04:50 PM Shawn Webb wrote:
> >> On Sunday, February 15, 2015 11:14:47 PM Hans Petter Selasky wrote:
> >>> Hi,
> >>> 
> >>> I've added support for USB display link adapters to FreeBSD-11-current,
> >>> but the kernel panics once "vt_fb_attach(info)" is called from
> >>> "fbd_register(struct fb_info* info)" when the USB device is plugged or
> >>> udl.ko is loaded. Is this a known issue?
> >>> 
> >>> REF: https://svnweb.freebsd.org/base/head/sys/dev/usb/video/udl.c
> >>> 
> >>> --HPS
> >> 
> >> I just bought a DisplayLink adapter that's compatible. Compiling a new
> >> kernel with device udl brings this error:
> Hi,
> You need to also build the "sys/modules/videomode" and install and kldload.
> Does your device need a power supply?
> Can you plug the device through an external USB HUB after boot?
> Also you need some VT patches, before it will attach to VT which I can
> send you. See attachment.
> Beware the unplugging the device is not supported. It will crash / panic
> which needs to be resolved.
> --HPS

(FYI: I'm switching email accounts from latt...@gmail.com to 

So I'm a little unsure how to test this. Could you provide some instructions?

I bought this device: http://www.iogear.com/support/dm/driver/GUC2020DW6
It's listed in udl.c as supported: 

What kind of setup should I have in my xorg.conf to tell xorg to use that 
instead of the built-in laptop display? Can you provide an example xorg.conf?

Shawn Webb

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