Date: Sun, 22 Feb 2015 10:09:34 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Shawn Webb <shawn.webb@hardenedbsd.org> Cc: freebsd-current@freebsd.org Subject: Re: Pluggable frame buffer devices Message-ID: <54E99CCE.5030401@selasky.org> In-Reply-To: <4020865.FJlWBPXrRZ@shawnwebb-laptop> References: <54E11A57.3030105@selasky.org> <1963872.pLReSBKNjx@shawnwebb-laptop> <54E6F060.2010301@selasky.org> <4020865.FJlWBPXrRZ@shawnwebb-laptop>
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On 02/21/15 23:59, Shawn Webb wrote: > 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 lattera@gmail.com to > shawn.webb@hardenedbsd.org) > > 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: > https://svnweb.freebsd.org/base/head/sys/dev/usb/video/udl.c?revision=278852&view=markup#l151 > > 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? > Xorg config is here: http://pastebin.com/W9yPBvcR I'll see if I can put the rest of the patches in place this week, so that it will be more easy for you. --HPS
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