Trying to get dual monitor display to work

[sinc]

I am using BionicDog64 Cinnamon Version (though I have tried Puppy versions as well) and I cannot get dual screen to function.

As mentioned above I purchased a XFX Radeon R7 240 (R7240ACLF2) 2GB GDDR5 SDRAM PCI Express 3.0 x16 Video Card under the impression I would be able to use it fairly easily on Linux. But the main function I am looking for, dual screen support, I have not been able to get.

I have installed the package amdgpu-install via the synaptic package manager included in BionicDog but am unsure what else to do.

Unfortunately, the current participants on the BionicDog thread don't seem to be able to provide the solution (I'm sure they would if they knew, they have been super helpful).

If anyone else can help me figure out if I have made a mistake in my purchase or what could be done to correct the situation Id appreciate it. Thanks so much for your help.

[williams2]

First, type this in a command console:

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xrandr

It should tell you what screens you have to work with.

[sinc]

See screenshot.
I do notice is says VGA not connected which is not the case. the VGA is connected.

[williams2]

ok, it says you are using HDMI-A-0

Using this video card, you can use DVI-D-0 and/or VGA-0 if you have them plugged in. Not sure if you are using your new card or the builtin card.

If you are plugged into the VGA jack, this should enable it:

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xrandr --output HDMI-A-0 --auto --primary --output VGA-0 --auto --above

or something like that. This should set your screen back to the way it is now:

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xrandr --output HDMI-A-0 --auto --primary --output VGA-0 --off

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xrandr --help

This should tell you what video cards you have:

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lspci

I have never run a Dog, so someone else may know more than I do.

[Lobster]

@sinc

I plugged in an AOC 19" VGA monitor into my

radeon card VGA compatible controller:
Advanced Micro Devices, Inc. [AMD/ATI] RV710 [Radeon HD 4350/4550

I had an HDMI already plugged into the card and working

Booted up Puppy 8 (Bionic Pup)

Dual screens just worked. I could drag items to the second VGA screen. Mouse and keyboard worked - moving between screen.

----

I started off by exploring Zarfy which is built into Dpup Stretch RC4
That seemed to work to some extent - did not play with it much.
Thought I would download zarfy for Bionic but no need.

Zarfy
http://www.murga-linux.com/puppy/viewto ... 009#349390

Hope that helps
Let us know how you get on ...

Puppy Linux
Two small dogs are better that a big dog