RE: [External] Re: No Dual Monitors on AMD Ryzen 7 Pro + Radeon Graphics

[Curtis Tucker1 <ctucker1@lenovo.com>]

Ok.  Thanks., Dan   I now see that the AMDGPU module was loaded without the driver.

C

-----Original Message-----
From: Dan Ritter <dsr@randomstring.org> 
Sent: Wednesday, June 24, 2020 1:40 PM
To: Curtis Tucker1 <ctucker1@lenovo.com>
Cc: Greg Wooledge <wooledg@eeg.ccf.org>; debian-user@lists.debian.org
Subject: Re: [External] Re: No Dual Monitors on AMD Ryzen 7 Pro + Radeon Graphics

Curtis Tucker1 wrote: 
> No output in "~/.local", but I'll keep that in mind for future reference.  I am starting to see that directory used more often, eg, fonts.
> 
> Looking at the log in "/var/log", is loads the Radeon module, but then unloads it because it cannot find the right chipset on the board.  The same for the fallback "fbdev/fbdevhw" because it could not find a framebuffer.  Finally, it settles on "int10", makes a call into BIOS to initialize the GPU display as VESA with extensions VBE.  Next it starts to configure other associated devices/components, ie, events, kb, touch screen, camera, etc., & hands over to udev control of HDMI/DP & HD audio/digital because it couldn't find any drivers.
> 
> BTW:  I posted this question before I discovered that there was no xorg.conf.
> 

OK. The driver you actually want is "amdgpu", not "radeon" and definitely not VESA.

Set that in xorg.conf and you should have full access to all your screens.

-dsr-