Re: Dock station

Charlie Li <[email protected]> Thu, 27 Dec 2018 04:36:41 -0500

Newsgroups	gmane.os.freebsd.devel.x11
Message-ID	<[email protected]>

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.

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.

-- 
Charlie Li
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