On 02/16/15 16:39, 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 personally can't answer your question. But I'd love to help test this,
especially since Haswell graphics isn't supported, yet, and my laptop is
running Haswell. What would be a good USB display device to buy to help test
this awesome work out?
Hi Shawn,
I think any USB device that uses the brand name "DisplayLink" will work.
Current list of supported devices:
/*
* Matching devices.
*/
static const STRUCT_USB_HOST_ID udl_devs[] = {
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD4300U,
DL120)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD8000U,
DL120)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_GUC2020,
DL160)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LD220, DL165)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VCUD60,
DL160)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_DLDVI, DL160)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VGA10, DL120)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_WSDVI, DLUNK)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_EC008, DL160)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_HPDOCK,
DL160)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NL571, DL160)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_M01061,
DL195)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NBDOCK,
DL165)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_SWDVI, DLUNK)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_UM7X0, DL120)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_CONV, DL160)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_PLUGABLE,
DL160)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LUM70, DL125)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_POLARIS2,
DLUNK)},
{USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LT1421, DLUNK)}
};
Also see:
man udl
Some work needs to be done to fully integrate with the VT console
subsystem. I had Xorg up and running today with the DisplayLink I
adapter I have, and I works quite well. With USB 3.0 ones I think we can
expect more.
--HPS
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