<html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <blockquote type="cite"> ddccontrol</blockquote> This is unrelated to your problem, but thank you very much for mentioning this software. I was not aware of ddc/i2c or ddccontrol before. After some tinkering i came up with <a href="https://rokups.github.io/blog/#%21pages/full-software-kvm-switch.md">full software kwm switch for VMs</a>. Hope it will be useful for ya people. <pre class="moz-signature" cols="72">Rokas Kupstys</pre> <div class="moz-cite-prefix">On 22/01/17 01:15, P. Pronk wrote: </div> <blockquote cite="mid:6a9e55f21497e398ca2c692ce07466ea@pronk.nl" type="cite">Hi all, Hope you can help me with this. I've built a new pc specifically with vfio in mind but unfortunately I can't get it too work. My pc consists of an Asus X99-M motherboard, Intel E5-1620v4, AMD RX480 in PCIE slot 1 (for Windows guest) and AMD RX460 in slot 3 (for Linux host). Both GPU's are connected to the same monitor, I will switch inputs by using ddccontrol. What is probably important to know, the one thing I missed when searching components is that Asus doesn't offer a 'boot gpu in slot X first' option. So that means when my pc boots it uses the RX480 as display. I have tried both setting the ids using pci-stub as vfio-pci, and although I can get the vfio-pci driver correctly assigned to the RX480 it seems in both cases there is a problem with the ROM. When I start my Windows guest, I can see a quite some CPU activity in virt-manager but the screen never turns on. The dmesg log says the following: ------------------- [ 216.982418] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 217.091942] device vnet0 entered promiscuous mode [ 217.092107] br0: port 2(vnet0) entered forwarding state [ 217.092123] br0: port 2(vnet0) entered forwarding state [ 218.067955] vfio_ecap_init: 0000:01:00.0 hiding ecap 0x19@0x270 [ 218.067961] vfio_ecap_init: 0000:01:00.0 hiding ecap 0x1b@0x2d0 [ 218.067965] vfio_ecap_init: 0000:01:00.0 hiding ecap 0x1e@0x370 [ 218.068429] vfio-pci 0000:01:00.0: BAR 0: can't reserve [mem 0xc0000000-0xcfffffff 64bit pref] [ 220.465312] kvm: zapping shadow pages for mmio generation wraparound [ 220.465835] kvm: zapping shadow pages for mmio generation wraparound [ 220.512593] vfio-pci 0000:01:00.0: Invalid ROM contents [ 220.512617] vfio-pci 0000:01:00.0: Invalid ROM contents ------------------- So I tried Alex's rom-parser, but unfortunately that doesnt seem to work either for the RX480: ------------------- # ./rom-parser /tmp/rx480.rom Valid ROM signature found @0h, PCIR offset 24ch PCIR: type 0 (x86 PC-AT), vendor: 1002, device: 67df, class: 030000 PCIR: revision 0, vendor revision: f32 Error, ran off the end ------------------- For the RX460 it does work: ------------------- # ./rom-parser /tmp/rx460.rom Valid ROM signature found @0h, PCIR offset 26ch PCIR: type 0 (x86 PC-AT), vendor: 1002, device: 67ef, class: 030000 PCIR: revision 0, vendor revision: f32 Valid ROM signature found @ec00h, PCIR offset 1ch PCIR: type 3 (EFI), vendor: 1002, device: 67ef, class: 030000 PCIR: revision 0, vendor revision: 0 EFI: Signature Valid, Subsystem: Boot, Machine: X64 Last image ------------------- I am running Linux Mint 18, which is basically Ubuntu 16.04. Kernel: Linux 4.4.0-59-generic Qemu: 1:2.5+dfsg-5ubuntu10.6 Ovmf: 0~20160408.ffea0a2c-2 Amdgpu: amdgpu-pro-16.50-362463 Maybe related, in dmesg I also get these errors (repeatedly): ------------------- [ 17.918696] pcieport 0000:00:02.0: AER: Multiple Corrected error received: id=0010 [ 17.918705] pcieport 0000:00:02.0: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=0010(Receiver ID) [ 17.918707] pcieport 0000:00:02.0: device [8086:6f04] error status/mask=00000040/00002000 [ 17.918708] pcieport 0000:00:02.0: [ 6] Bad TLP ------------------- See below the output of 'lspci -tv' ------------------- -+-[0000:ff]-+-0b.0 Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link 0/1 +(shorted_but_a_lot_of_Intel_stuff) \-[0000:00]-+-00.0 Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DMI2 +-01.0-[03]-- +-02.0-[02]--+-00.0 Advanced Micro Devices, Inc. [AMD/ATI] Device 67ef | \-00.1 Advanced Micro Devices, Inc. [AMD/ATI] Device aae0 +-03.0-[01]--+-00.0 Advanced Micro Devices, Inc. [AMD/ATI] Device 67df | \-00.1 Advanced Micro Devices, Inc. [AMD/ATI] Device aaf0 +-05.0 Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Map/VTd_Misc/System Management +-05.1 Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D IIO Hot Plug +-05.2 Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D IIO RAS/Control Status/Global Errors +-05.4 Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D I/O APIC +-11.0 Intel Corporation C610/X99 series chipset SPSR +-14.0 Intel Corporation C610/X99 series chipset USB xHCI Host Controller +-16.0 Intel Corporation C610/X99 series chipset MEI Controller #1 +-19.0 Intel Corporation Ethernet Connection (2) I218-LM +-1a.0 Intel Corporation C610/X99 series chipset USB Enhanced Host Controller #2 +-1b.0 Intel Corporation C610/X99 series chipset HD Audio Controller +-1c.0-[04]-- +-1c.3-[05]----00.0 Intel Corporation I210 Gigabit Network Connection +-1c.4-[06]----00.0 ASMedia Technology Inc. ASM1142 USB 3.1 Host Controller +-1d.0 Intel Corporation C610/X99 series chipset USB Enhanced Host Controller #1 +-1f.0 Intel Corporation C610/X99 series chipset LPC Controller +-1f.2 Intel Corporation C610/X99 series chipset 6-Port SATA Controller [AHCI mode] \-1f.3 Intel Corporation C610/X99 series chipset SMBus Controller ------------------- Are these problems caused by the fact that I can't set the RX460 as boot_vga? Or is the RX480 at fault here? Or is there maybe something else at play? Would appreciate your help! With kind regards, Pim _______________________________________________ vfio-users mailing list <a class="moz-txt-link-abbreviated" href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> <a class="moz-txt-link-freetext" href="https://www.redhat.com/mailman/listinfo/vfio-users">https://www.redhat.com/mailman/listinfo/vfio-users</a> </blockquote> </body> </html>