https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263761
Bug ID: 263761
Summary: framework laptop: unable to output to HDMI monitor via
HDMI expansion card
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 233703
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=233703&action=edit
dmesg
Hello all,
As part of my testing (https://xyinn.org/md/freebsd/framework_laptop), I've
noticed that the HDMI Expansion Card (Type C as well since that's the framework
laptop's primary expansion interface) for the framework laptop fails to output
any data to the external monitor (The monitor signal light doesn't even light
up). FreeBSD did detect the HDMI card, and I got some data in xrandr for the
"DP-3" display. However the supported resolutions are incorrect. The same
monitor works via my Anker Dongle's HDMI port (Dongle is Type C) and is
detected as "DP-4" in that scenario and I can output through it.
Below is some information that I noticed in dmesg:
ugen1.2: <Framework HDMI Expansion Card> at usbus1
...
[drm ERROR :intel_dp_get_link_train_fallback_values] Link Training Unsuccessful
the drm error was repeated many times.
This is the information xrandr reported when it was connected via the HDMI
Expansion Card (DP-3):
DP-3 connected primary 1024x768+0+0 (normal left inverted right x axis y axis)
597mm x 336mm
1440x576 50.00
1024x768 60.00*
1440x480 60.00 59.94
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
---
This is the same monitor but connected via the Anker Dongle's HDMI port (DP-4):
DP-4 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis)
597mm x 336mm
2560x1440 59.95*+ 99.95
1920x1080 60.00 60.00 50.00 59.94 30.00 29.97
1280x1024 75.02 60.02
1440x900 59.90
1152x864 75.00
1280x720 60.00 50.00 59.94
1440x576 50.00
1024x768 75.03 70.07 60.00
1440x480 60.00 59.94
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
Lastly, this is all on the following:
FreeBSD 14.0-CURRENT #1 main-n255108-9fb40baf604: Fri Apr 29 00:08:48 EDT 2022
root@leslie:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
- Jonathan
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