Hello all,
I have 2 monitors and operate them with two computers.
One, with Windows, provides two hdmi and what remains are two dp ports, one for each monitor.
Daisy chaining impossible.
The second computer, tumbleweed shall operate on the dp ports.
Unfortunately, it has only hdmi port either…
So i bought adapter to dp and it works fine, but only on one monitor.
As splitters are expensive I ask whether it is possible to just add a splitter and have two monitors on dp then?
Is this supported by linux?
and how to configure?
All DP-HDMI converters I have experience with are one way only: DP output to HDMI input. IOW, standard DisplayPorts on displays must be fed by display port outputs, including MST splitters. DP MST splitters IME either work or not automatically. They need 1.2 or higher DP outputs to work at all. Reputedly, some USB-C outputs can serve as DP outputs to work with MST, but the only USB-C I have does not support video output.
Dual mode DP also exists for some displays to accept output from HDMI or DVI ports through inexpensive adapters. I believe this may be what enables some docking stations to work from an HDMI output and displays with DP inputs. The following is from using my Monoprice brand MST splitter:
I did not find any device accepting hdmi and splitting into two DP, but it is definitively what would be best.
The problem is, I cannot really really your printout.
That’s because there are: 2560x1440, 1920x1200 and 1680x1050.
Not explicitly, but wherever is seen in inxi output double-number-dashed DP- outputs, it’s indicative of splitting. So, you can see DP-1-1 connects to a 1920x1200 display and DP-1-2 connects to a 2560x1440 display. That iGPU shows as logically supporting 4 DP ports and 2 HDMI ports, but in fact the motherboard it’s on only has 1 DP output along with 2 HDMI outputs.
Inxi is showing your AMD GPU logically supports one HDMI port, 5 DisplayPorts, plus a writeback, but only sees attached a 2560x1440 display connected via HDMI. If there are no existing physical standard or mini DP outputs it could conceivably be indicative that a USB dock with DP outputs could be supported, and/or it could mean you have an APU that supports a motherboard with more graphics output ports than your current one has. inxi -GMSaz would more completely explain your graphics hardware/software configuration.
Lack of ports on Device-1 (NVidia dGPU) indicates its own outputs are not supported by the current configuration. IOW, to use the output ports on the NVidia you would need to couple it via SLI with another NVidia PCIe card, or in the BIOS change configuration to make the dGPU the primary GPU, which may disable the APU’s GPU function.
If your motherboard has the GPU ports needed, then you should be best off removing the much older dGPU. Try running glmark2 before removing it to compare with running it again after removal. I’d expect your much newer AMD to do better than the old dGPU.
HDMI-A-1 is the kernel’s name for the port. X uses inexplicably different naming, HDMI-1 in your case.
Adapters are not explicitly noted, if at all. The output port is what is named, nothing beyond physical connector on motherboard or dGPU.
This image of outputs shows me you have one VGA port and one HDMI port on your motherboard. Many newer motherboards, like yours, have built-in adapters to convert a DisplayPort to a VGA output, which is why you don’t see VGA in inxi output. Clearly you do have VGA available as a second APU output, which according to this, your E27q G4 provides an input for. If you can’t get a USB dock with a DP output for full quality digital, the VGA might prove adequate to task without buying anything more than a dime-a-dozen VGA cable from a thrift store.
“Expect” is a strong word. I believe that new enough USB hardware is capable of carrying video when the associated hardware is otherwise capable of supporting it and wired up for the task. People with laptops connect docks with video outputs using USB-C ports, so I believe it may be possible with your standard USB 3.2 ports to do the same. I can’t promise. I’m only suggesting to investigate further, assuming VGA turns out to not be satisfactory to your requirements, and your dealer won’t accommodate an appropriate trade.
DP ports can be converted to provide VGA output via a converter built into a motherboard, which is what your PRIME A620M-K appears to have, same as my PRIME B250M-C. There is no other reason for that VGA port to be where it is, but it’s not because there is a DP signal; instead because of the converter, it’s an available VGA (analog, with no sound) output signal.