[cc'd efifb and vgaarb maintainers on bugzilla, but not sure whether people pay attention to that] On Thu, Jan 14, 2021 at 10:42:53AM +0000, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=211189 > > Bug ID: 211189 > Summary: vgaarb overrides boot device unexpectedly with Intel > and discrete AMDGPU > Product: Drivers > Version: 2.5 > Kernel Version: 5.10.7-200.fc33.x86_64 > Hardware: x86-64 > OS: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: PCI > Assignee: drivers_pci@xxxxxxxxxxxxxxxxxxxx > Reporter: dominik@xxxxxxxxxxxxxx > Regression: No > > The system is a MSI Z77A-GD65 mainboard configured to boot in UEFI mode. > Despite setting integrated GPU (from i5-3570K CPU) as the default in firmware > setup, the kernel sets the discrete GPU (Radeon HD 7950) as boot_vga. This > results in wrong order in e.g. switcherooctl: > $ switcherooctl list > Device: 0 > Name: Advanced Micro Devices, Inc. [AMD®/ATI] Tahiti PRO [Radeon HD > 7950/8950 OEM / R9 280] > Default: yes > Environment: DRI_PRIME=pci-0000_01_00_0 > > Device: 1 > Name: Intel® HD Graphics 4000 > Default: no > Environment: DRI_PRIME=pci-0000_00_02_0 > $ lspci -vnn > ... > 00:02.0 VGA compatible controller [0300]: Intel Corporation Xeon E3-1200 v2/3rd > Gen Core processor Graphics Controller [8086:0162] (rev 09) (prog-if 00 [VGA > controller]) > DeviceName: Onboard IGD > Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:2111] > Flags: bus master, fast devsel, latency 0, IRQ 31 > Memory at f7800000 (64-bit, non-prefetchable) [size=4M] > Memory at d0000000 (64-bit, prefetchable) [size=256M] > I/O ports at f000 [size=64] > Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- > Capabilities: [d0] Power Management version 2 > Capabilities: [a4] PCI Advanced Features > Kernel driver in use: i915 > Kernel modules: i915 > ... > 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. > [AMD/ATI] Tahiti PRO [Radeon HD 7950/8950 OEM / R9 280] [1002:679a] (prog-if 00 > [VGA controller]) > Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:2761] > Flags: bus master, fast devsel, latency 0, IRQ 32 > Memory at e0000000 (64-bit, prefetchable) [size=256M] > Memory at f7d00000 (64-bit, non-prefetchable) [size=256K] > I/O ports at e000 [size=256] > Expansion ROM at 000c0000 [disabled] [size=128K] > Capabilities: [48] Vendor Specific Information: Len=08 <?> > Capabilities: [50] Power Management version 3 > Capabilities: [58] Express Legacy Endpoint, MSI 00 > Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 > <?> > Capabilities: [150] Advanced Error Reporting > Capabilities: [270] Secondary PCI Express > Capabilities: [2b0] Address Translation Service (ATS) > Capabilities: [2c0] Page Request Interface (PRI) > Capabilities: [2d0] Process Address Space ID (PASID) > Kernel driver in use: amdgpu > Kernel modules: radeon, amdgpu > > $ for f in /sys/bus/pci/devices/*/boot_vga ; do echo -n "$f:" ; cat $f ; done > /sys/bus/pci/devices/0000:00:02.0/boot_vga:0 > /sys/bus/pci/devices/0000:01:00.0/boot_vga:1 > > $ dmesg > ... > [ 0.267216] pci 0000:01:00.0: BAR 0: assigned to efifb This is from drivers/video/fbdev/efifb.c and makes me wonder if this is a firmware defect. You set 00:02.0 to be the default in firmware setup, but apparently the EFI FB is using 01:00.0? > [ 0.268571] pci 0000:00:02.0: vgaarb: setting as boot VGA device > [ 0.268571] pci 0000:00:02.0: vgaarb: VGA device added: > decodes=io+mem,owns=io+mem,locks=none > [ 0.268571] pci 0000:01:00.0: vgaarb: VGA device added: > decodes=io+mem,owns=io+mem,locks=none > [ 0.268571] pci 0000:00:02.0: vgaarb: no bridge control possible > [ 0.268571] pci 0000:01:00.0: vgaarb: bridge control possible > [ 0.268571] pci 0000:01:00.0: vgaarb: overriding boot device > [ 0.268571] vgaarb: loaded > [ 0.754748] efifb: probing for efifb > [ 0.754766] efifb: No BGRT, not showing boot graphics > [ 0.754768] efifb: framebuffer at 0xe0000000, using 8100k, total 8100k > [ 0.754769] efifb: mode is 1920x1080x32, linelength=7680, pages=1 > [ 0.754770] efifb: scrolling: redraw > [ 0.754772] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0 > [ 2.984727] i915 0000:00:02.0: vgaarb: changed VGA decodes: > olddecodes=io+mem,decodes=none:owns=io+mem > [ 3.011601] [drm] Initialized i915 1.6.0 20200917 for 0000:00:02.0 on minor > 0 > [ 3.213870] [drm] amdgpu kernel modesetting enabled. > [ 3.275739] i915 0000:00:02.0: [drm] fb1: i915drmfb frame buffer device > [ 3.275972] fb0: switching to amdgpudrmfb from EFI VGA > [ 3.276112] amdgpu 0000:01:00.0: vgaarb: deactivate vga console > [ 3.276240] [drm] initializing kernel modesetting (TAHITI 0x1002:0x679A > 0x1462:0x2761 0x00). > ... > [ 4.069577] amdgpu 0000:01:00.0: [drm] fb0: amdgpudrmfb frame buffer device > [ 4.351324] [drm] Initialized amdgpu 3.40.0 20150101 for 0000:01:00.0 on > minor 1 > > -- > You may reply to this email to add a comment. > > You are receiving this mail because: > You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
