'Re: Config to be able to switch X output between 2 video cards via ARandR/xrandr'

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List:       freedesktop-xorg
Subject:    Re: Config to be able to switch X output between 2 video cards via ARandR/xrandr
From:       Aleksei <alex3kov () zoho ! com>
Date:       2016-10-31 7:10:02
Message-ID: 382a42fc-99ad-9477-0f9c-a48bc33dffe5 () zoho ! com
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Any hints at all on this?

/--Regards, Aleksei/

------------------------------------------------------------------------

*From:* Aleksei
*Sent:* Wednesday, October 26, 2016 7:17PM
*To:* Xorg
*Subject:* Config to be able to switch X output between 2 video cards 
via ARandR/xrandr
Hi,
My hardware setup is 2 video cards (1 integrated Intel, 1 discrete 
Nvidia). Intel is connected to a monitor via HDMI, Nvidia is connected 
to the same monitor via DVI. There's also internal monitor hard-wired to 
Intel via eDP-1 output (you can see it in attached files).

I want to have 2 available outputs in ARandR so I can e.g. switch X 
output from (Intel->HDMI) to (Nvidia->DVI) and then manually choose 
input port (DVI/HDMI) on the hardware monitor.

I'm starting X with just startx - disabled display manager to eliminate 
it as a factor.

Here's my lspci output:
[username@arch ~]$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 
(rev 09)
02:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 
1060] (rev a1)

After reading various Xorg manuals I came up with attached Xorg config. 
Some options are adopted from nvidia-xconfig output. I have 2 entries 
for monitors, because I want it to run at 144Hz when signal comes from 
Nvidia and at 60Hz when signal comes from Intel (Intel card can't output 
144Hz).

This config behaves as follows:

 1. On boot video output (with text tty login) goes to Intel->HDMI
 2. I log in, run startx, HDMI screen goes black (but there's a HDMI
    signal - monitor does not power down)
 3. After switching input port to DVI on the monitor I see my usual
    Openbox session

The problem is that ARandR shows only DVI-D-0 as selectable output. 
Attached are xrandr outputs for various queries. Apparently outputs to 
Intel are "active" (marked with "*"), but I get only blank screen on them.

What should be fixed with this config (or something else) to be able to 
switch X output between (Intel->HDMI) and (Nvidia->DVI)?

-- 
/--Regards, Aleksei/

[Attachment #5 (text/html)]

<html>
  <head>
    <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
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  <body smarttemplateinserted="true" bgcolor="#FFFFFF" text="#000000">
    <div id="smartTemplate4-template">
      <p>Any hints at all on this?<br>
      </p>
    </div>
    <br>
    <div class="moz-signature"><i>--Regards, Aleksei</i>
    </div>
    <br>
    <div id="smartTemplate4-quoteHeader">
      <hr><br>
      <b>From:</b> Aleksei<br>
      <b>Sent:</b> Wednesday, October 26, 2016 7:17PM<br>
      <b>To:</b> Xorg<br>
      <b>Subject:</b> Config to be able to switch X output between 2
      video cards via ARandR/xrandr</div>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
    Hi,<br>
    My hardware setup is 2 video cards (1 integrated Intel, 1 discrete
    Nvidia). Intel is connected to a monitor via HDMI, Nvidia is
    connected to the same monitor via DVI. There's also internal monitor
    hard-wired to Intel via eDP-1 output (you can see it in attached
    files).<br>
    <br>
    I want to have 2 available outputs in ARandR so I can e.g. switch X
    output from (Intel-&gt;HDMI) to (Nvidia-&gt;DVI) and then manually
    choose input port (DVI/HDMI) on the hardware monitor.<br>
    <br>
    I'm starting X with just startx - disabled display manager to
    eliminate it as a factor.<br>
    <br>
    Here's my lspci output:<br>
    [username@arch ~]$ lspci | grep VGA<br>
    00:02.0 VGA compatible controller: Intel Corporation HD Graphics
    5500 (rev 09)<br>
    02:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce
    GTX 1060] (rev a1)<br>
    <br>
    After reading various Xorg manuals I came up with attached Xorg
    config. Some options are adopted from nvidia-xconfig output. I have
    2 entries for monitors, because I want it to run at 144Hz when
    signal comes from Nvidia and at 60Hz when signal comes from Intel
    (Intel card can't output 144Hz).<br>
    <br>
    This config behaves as follows:<br>
    <ol>
      <li>On boot video output (with text tty login) goes to
        Intel-&gt;HDMI</li>
      <li>I log in, run startx, HDMI screen goes black (but there's a
        HDMI signal - monitor does not power down)</li>
      <li>After switching input port to DVI on the monitor I see my
        usual Openbox session<br>
      </li>
    </ol>
    The problem is that ARandR shows only DVI-D-0 as selectable output.
    Attached are xrandr outputs for various queries. Apparently outputs
    to Intel are "active" (marked with "*"), but I get only blank screen
    on them.<br>
    <br>
    What should be fixed with this config (or something else) to be able
    to switch X output between (Intel-&gt;HDMI) and (Nvidia-&gt;DVI)?<br>
        <br>
    <div class="moz-signature">-- <br>
      <i>--Regards, Aleksei</i> </div>
    <br>
  </body>
</html>

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