[resending to freebsd-x11_at_ vs x11_at_] I'm making my semi-annual attempt to convert a windows box to a FreeBSD box and having the same kind of issues. It is a Dell Optiplex 9020 with dual radeon cards (and currently 3 monitors, 4 if I can get it to work). TL;DR: I can get it to work with any one card, but not both cards. [uname -aUK] FreeBSD admin 13.0-STABLE FreeBSD 13.0-STABLE #4 stable/13-n246840-86a96281df03: Wed Aug 18 09:55:41 PDT 2021 warlock_at_admin:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64 1300514 1300514 [pkg info | grep -E -e 'drm-.*kmod' -e 'xorg-([0-9]|server)' -e video-ati] drm-fbsd13-kmod-5.4.92.g20210720_1 DRM modules for the linuxkpi-based KMS components drm-kmod-g20190710_1 Metaport of DRM modules for the linuxkpi-based KMS components xf86-video-ati-19.1.0_4,1 X.Org ati display driver xorg-7.7_3 X.Org complete distribution metaport xorg-server-1.20.11_3,1 X.Org X server and related programs Kernel drivers are loaded (although I don't think no-.conf setup tries to use the radeon bits): [kldstat | grep -e radeon -e ^Id -e drm] Id Refs Address Size Name 5 1 0xffffffff830f9000 150c80 radeonkms.ko 6 2 0xffffffff8324a000 7f548 drm.ko 10 1 0xffffffff832e9000 4358 radeon_oland_pfp_bin.ko 11 1 0xffffffff832ee000 4358 radeon_oland_me_bin.ko 12 1 0xffffffff832f3000 4358 radeon_oland_ce_bin.ko 13 1 0xffffffff832f8000 41d8 radeon_oland_rlc_bin.ko 14 1 0xffffffff832fd000 9dd8 radeon_oland_mc_bin.ko 15 1 0xffffffff83307000 11410 radeon_oland_smc_bin.ko 16 1 0xffffffff83319000 37af0 radeon_TAHITI_uvd_bin.ko 17 1 0xffffffff83351000 de00 radeon_TAHITI_vce_bin.ko X sees both cards: [grep -e 'More than one' -e 'PCI:' /var/log/Xorg.0.log -e WW] (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 80926.514] (!!) More than one possible primary device found [ 80926.514] (--) PCI: (1_at_0:0:0) 1002:6611:1028:210b rev 0, Mem _at_ 0xe0000000/268435456, 0xf7e00000/262144, I/O _at_ 0x0000e000/256, BIOS _at_ 0x????????/65536 [ 80926.514] (--) PCI: (5_at_0:0:0) 1002:6611:1028:210b rev 0, Mem _at_ 0xd0000000/268435456, 0xf7d00000/262144, I/O _at_ 0x0000d000/256, BIOS _at_ 0x????????/65536 [ 80926.517] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support I've seem people claim that VGA arbiter doesn't mean I can't use both cards at once the same time, but I'll call it out here. OS obviously sees both cards and reports them like this: [pciconf -lv] vgapci0_at_pci0:1:0:0: class=0x030000 rev=0x00 hdr=0x00 vendor=0x1002 device=0x6611 subvendor=0x1028 subdevice=0x210b vendor = 'Advanced Micro Devices, Inc. [AMD/ATI]' device = 'Oland [Radeon HD 8570 / R5 430 OEM / R7 240/340 / Radeon 520 OEM]' class = display subclass = VGA vgapci1_at_pci0:5:0:0: class=0x030000 rev=0x00 hdr=0x00 vendor=0x1002 device=0x6611 subvendor=0x1028 subdevice=0x210b vendor = 'Advanced Micro Devices, Inc. [AMD/ATI]' device = 'Oland [Radeon HD 8570 / R5 430 OEM / R7 240/340 / Radeon 520 OEM]' class = display subclass = VGA X with no .conf only uses one monitor (or, more correctly, just the monitors that are associated with the card it defaulted to). I can play games with a .conf using the device section and BusIDs to get it to use the two monitors on the 2nd card, but then the first gets ignored. I've experimented with AutoAddGPU (true), and GPUDevice (2nd card) with no love. It seems like X doesn't want to recognize both cards (I think this is the one with radeon driver): [xrandr --listproviders)] Providers: number : 1 Provider 0: id: 0x53 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 2 outputs: 2 associated providers: 0 name:OLAND _at_ pci:0000:05:00.0 With no .conf, it just shows this: [xrandr --listproviders] Providers: number : 1 Provider 0: id: 0x43 cap: 0xa, Sink Output, Sink Offload crtcs: 2 outputs: 2 associated providers: 0 name:modesetting Depending on which card I've picked with the .conf, it'll show that. It seems like my first hurdle is to get X running on all cards at the same time, then dig into Xinerama and monitor layouts so things show up where they're supposed to. Any suggestions? There has been a LOT of water under the bridge for the DRM drivers and X11 from the web hits I'm finding. I've attached the Xorg.0.log when I don't have a custom configuration, but I assume it's pretty useless since it says "Not automatically adding GPU devices", which would seem to preclude my 2nd card.
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