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[Bug 1085048] radeon: Laptop docking station three displays, third one in suspend state
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Wed, 25 Apr 2018 17:36:40 +0000
  • Message-id: <>

Max Staudt <mstaudt@xxxxxxxx> changed:

What |Removed |Added
Resolution|--- |UPSTREAM

--- Comment #9 from Max Staudt <mstaudt@xxxxxxxx> ---
Okay, I've tried to reproduce this.

I've set up a machine with a Radeon Tonga PRO [Radeon R9 285/380] [1002:6939],
which has 4 outputs, all connected:

- DisplayPort
- VGA via DVI-I

I've disabled the DP screen, and afterwards all three other screens were still

In your case, the setup seems to be different:

- eDP (connected - the internal display)
- DisplayPort-0 (unconnected)
- DisplayPort-1 (connected)
- DisplayPort-2 (connected)
- DisplayPort-3 (connected)

where DP-1..3 are the DVI/VGA screens, connected via adapters that are probably
part of the docking station. Who knows, maybe even via DP MST.

Unfortunately we don't have the hardware to test this, sorry :(

So I'm afraid you'll have to ask upstream, as suggested.


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