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Date:      Tue, 3 Dec 2019 10:12:50 -0700
From:      Johannes Lundberg <johalun@FreeBSD.org>
To:        Alexandr Krivulya <shuriku@shurik.kiev.ua>, freebsd-x11@freebsd.org
Subject:   Re: HDMI display autodetect
Message-ID:  <17748315-f258-875f-68d5-e34a9fd15f1f@FreeBSD.org>
In-Reply-To: <8929d25b-d435-b718-54fe-175a4492f7db@shurik.kiev.ua>
References:  <8929d25b-d435-b718-54fe-175a4492f7db@shurik.kiev.ua>

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On 2019-12-03 01:58, Alexandr Krivulya wrote:
> Hi!
> When I attach external display over HDMI port on running system it is
> not recognized (ThinkPad T470p with CURRENT,
> drm-current-kmod,xf86-video-intel). xrandr do not reflect any chnages.
> As workaround I need to reboot  or suspend-resume my system.


Hi

Does it behave the same with the modesetting X driver? (uninstall
xf86-video-intel or set Driver = "modesetting" in xorg.conf's device
section and restart X or reboot)

If so, does it behave the same with drm-devel-kmod instead of
drm-current-kmod?

You can also see if the kernel driver registers any status status,
reports error, etc by increase logging

sudo sysctl dev.drm.drm_debug=-1

(very verbose so you'd wanna switch this off when done)

Check with dmesg for any output when connecting/disconnecting the HDMI
cable.


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