Please excuse me if you find any typos, english is not my native language.
I have a HP 745 G4 with a AMD PRO A10-8730B CPU Carrizo 2015, should be Radeon R5 graphics if I check the specs. What I understand it should be supported?
It is hooked up with a HP Ultraslim Docking Station 2013 with the latest firmware at work.
If I connect one screen with VGA and the other with Displayport both monitors works, but I want to use the two Displayport + the VGA so I can use three screens. However the problem is there only with two so I figured it is easier to explain that way. When I connect the two Displayport Ubuntu just sees one screen in the settings and the image is mirrored on screen 1 and 2, I get picture on both screens though. It is like it thinks that the both Displayport are one.
I did install the amdgpu-pro 17.40 driver without problem but nothing changed, exactly the same problem. I have tested in both 16.04 and 17.10 versions of Ubuntu (17.10 without the amdgpu-pro driver though). I also tried another machine, a HP 840 G1 with Intel Chipset in the same docking station, it worked right away, so I really think it is a driver problem.
Any tips and tricks? I would appreciate a lot if I could get some help with this.
I have now found out that there is no "VGA" in xrandr. When I plug the VGA directly into the laptop without the docking station xrandr says that Displayport-1 is connected.
Maybe it is some kind of internal adapter from Displayport to VGA?
At the moment I am using 3840x1080 resolution on the displayport monitors and 1920x1080 on the VGA monitor, as a workaround. Works okay but would of course be better if there was a fix.
No APUs are supported in our AMDGPUPro driver, so these sort of issues can be expected.
Radeon Software for Linux Release Notes
AMD Radeon™ Product Compatibility
The Radeon™ Software for Linux® Driver is compatible with the following AMD products.
|AMD Product Family Compatibility |
|Radeon™ RX Vega Series Graphics||AMD Radeon™ Pro WX-series|
|Radeon™ Vega Frontier Edition||AMD FirePro™ W9100|
|Radeon™ RX 550/560/570/580 Series Graphics||AMD FirePro™ W8100|
|AMD Radeon™ RX 460/470/480 Graphics||AMD FirePro™ W7100|
|AMD Radeon™ Pro Duo||AMD FirePro™ W5100|
|AMD Radeon™ R9 Fury/Fury X/Nano Graphics||AMD FirePro™ W4300|
|AMD Radeon™ R9 380/380X/390/390X Graphics||AMD FirePro™ W4100|
|AMD Radeon™ R9 285/290/290X Graphics||AMD FirePro™ W2100|
|AMD Radeon™ R7 240/250/250X/260/260X/350||AMD FirePro™ W600|
|AMD Radeon™ HD7700/7800/8500/8600||AMD FirePro™ S-Series|
|AMD Radeon™ R9 360 Graphics||AMD Radeon™ Pro WX 9100|
|AMD Radeon™ R5 340|