[Bug 105839] TB3 + MST Hub | No display signal

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Apr 1 19:57:10 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=105839

--- Comment #1 from jam01 at protonmail.com <jam01 at protonmail.com> ---
Now I can't get any of the external displays to come on.

xrandr output before plugging in the TB3 dock:

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
XWAYLAND0 connected 1920x1080+0+0 (normal left inverted right x axis y axis)
310mm x 170mm
   1920x1080     59.96*+


After I plug it in the laptop's display turns off and after some time one of
the external monitors wakes up (as if it gets a signal) but nothing shows and
goes back to sleep. Then all screens remain off. I turned off/on the monitors
and the signal briefly came on one of them but went back to black and then the
laptop's display came back on. Now the xrandr output is

Screen 0: minimum 320 x 200, current 2944 x 1080, maximum 8192 x 8192
XWAYLAND0 connected 1920x1080+0+0 (normal left inverted right x axis y axis)
310mm x 170mm
   1920x1080     59.96*+
XWAYLAND2 connected 1024x768+1920+0 (normal left inverted right x axis y axis)
480mm x 270mm
   1024x768      59.92*+

I'm attaching the dmesg output for that whole process.

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