Date: Thu, 27 Dec 2018 11:26:06 +0100 From: Niclas Zeising <zeising@freebsd.org> To: Charlie Li <ml@vishwin.info>, "freebsd-x11@freebsd.org" <freebsd-x11@FreeBSD.org> Subject: Re: Dock station Message-ID: <cd86fd2e-a805-0954-0167-222b4249e4b4@freebsd.org> In-Reply-To: <f359ad62-4f09-5fa8-acb4-cb5cff6a2db3@vishwin.info> References: <0B1E35D0-7921-4AD9-8F5B-BF7F072E04F0@FreeBSD.org> <527c399b-faa7-2e7b-f012-ced03aa7009c@freebsd.org> <f359ad62-4f09-5fa8-acb4-cb5cff6a2db3@vishwin.info>
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On 12/27/18 10:36 AM, Charlie Li wrote: > On 27/12/2018 04:11, Niclas Zeising wrote: >> On 12/27/18 8:54 AM, Martin Wilke wrote: >>> Hi, >>> >>> I have a thinkpad t480 (2018 model) / dock station. Everything works >>> fine except that when i disconnect from the dock station and >>> reconnect, my monitors won't be detected without restarting x. Is >>> there any known workaround for that? >>> >> >> This is the thunderbolt dock, right? >> Regards! > USB-C. Which means thunderbolt iirc. Thunderbolt isn't supported at all on FreeBSD. Apparently there are no public specs to write drivers from. > > This behaviour is also present on at least the previous generation > mechanical docks, as I regularly disconnect and connect my ThinkPad > W550s (2015) to mine. Always have to zap X before suspending the machine > prior to disconnecting from the dock, or else open the lid to a black > screen where the only way out is to zap X. Reconnecting to the dock is > similar; have to zap X before the console shows on all monitors. > > Back when this machine ran Linux prior to August 2017, monitor detection > in this way only worked to a certain extent. It was highly kernel > driver-dependent from what I can remember, though the desktop > environment or window manager probably played a role here too. > > This is all with i915kms (doesn't matter which Linux kernel version of > drm-kmod), by the way. > If it's a problem on Linux, then it's most likely a problem on FreeBSD as well, remember that the drivers are basically the same. What does xrandr say once you've plugged the dock back in? Regards -- Niclas Zeising
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