Date: Mon, 16 Feb 2015 18:10:22 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Shawn Webb <lattera@gmail.com>, freebsd-current@freebsd.org Subject: Re: Pluggable frame buffer devices Message-ID: <54E2247E.3000207@selasky.org> In-Reply-To: <2245985.dTFM2y6A0x@shawn-work-laptop> References: <54E11A57.3030105@selasky.org> <2245985.dTFM2y6A0x@shawn-work-laptop>
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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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