Hi all, I am on a fully-up-to-date Debian Sid. My system is i7-8700k and, till now I've been using the "internal" graphics card (served by i915 driver). Now I installed a new (external) Radeon graphics card. It is correctly seen by kernel:
00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 630 (Desktop) [8086:3e92] DeviceName: Onboard IGD Subsystem: Gigabyte Technology Co., Ltd UHD Graphics 630 (Desktop) [1458:d000] Kernel driver in use: i915 -- 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1002:67df] (rev e7) Subsystem: XFX Pine Group Inc. Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1682:c580] Kernel modules: amdgpu 01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] [1002:aaf0] ... but connecting a monitor to the new card I see no output and also xrandr agrees: mcon@cinderella:~$ xrandr --listproviders Providers: number : 1 Provider 0: id: 0x43 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 1 associated providers: 0 name:modesetting This is probably due to fact I need to start a second, different, x-server for the second card. Being able to switch between the two servers would be nice. Can someone point me to the right documentation about how to do this? TiA /mcon
