tl;dr, I'd like to use the external display with FreeBSD 10.0 on an HP Pavilion g7-2270us. Don't care if it's mirrored or I have to select one or the other.
Here's the symptoms:
- When a display is plugged into the external VGA display port, both the attached display and the external display are active on the BIOS screens.
- Once FreeBSD begins to boot, the external VGA display is no longer active.
- Once booted, the expected fnF4 keystroke to toggle the default display has no effect (nor does F4 alone), regardless of the state of the "Action Keys" in BIOS, i.e. whether or not one needs to use the modifier.
- There are no options in the BIOS that would be relevant to this situation.
- No graphical servers installed, so X/Wayland/etc. has no relevance to this question (e.g.
- The Intel Core i3-3110M integrated graphics appears to be supported in versions ≤ 9.1.
grepping around in
pciconf I find:
vgapci0@pci0:0:2:0: class=0x030000 card=0x1843103c chip=0x01668086 rev=0x09 hdr=0x00 vendor = 'Intel Corporation' device = '3rd Gen Core processor Graphics Controller' class = display subclass = VGA bar  = type Memory, range 64, base 0x52000000, size 4194304, enabled bar  = type Prefetchable Memory, range 64, base 0x80000000, size 268435456, enabled bar  = type I/O Port, range 32, base 0x4000, size 64, enabled cap 05 = MSI supports 1 message cap 01[d0] = powerspec 2 supports D0 D3 current D0 cap 13[a4] = PCI Advanced Features: FLR TP
and here's some more useful stuff from
vgapci0: <VGA-compatible display> port 0x4000-0x403f mem 0x52000000-0x523fffff irq 16 at device 2.0 on pci0 agp0: <IvyBridge mobile GT2 IG> on vgapci0 agp0: aperture size is 256M, detected 65532k stolen memory vgapci0: Boot video device pci0: <simple comms> at device 22.0 (no driver attached) isab0: <PCI-ISA bridge> at device 31.0 on pci0 isa0: <ISA bus> on isab0 sc0: <System console> at flags 0x100 on isa0 sc0: VGA <16 virtual consoles, flags=0x300> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
vgapci0 is the attached screen. It seems then that
vga0 is the culprit we're trying to make work. It's on the
isa0 bus which is being served up by the
isab0 ISA-PCI bridge attached to
pci0. Indeed, digging around in
devinfo we find:
isab0 pnpinfo vendor=0x8086 device=0x1e59 subvendor=0x103c subdevice=0x1843 class=0x060100 at slot=31 function=0 handle=\_SB_.PCI0.LPCB isa0 sc0 vga0 I/O ports: 0x3c0-0x3df I/O memory addresses: 0xa0000-0xbffff
which is consistent with the above from
dmesg. This device is described by
pciconf as such:
isab0@pci0:0:31:0: class=0x060100 card=0x1843103c chip=0x1e598086 rev=0x04 hdr=0x00 vendor = 'Intel Corporation' device = 'HM76 Express Chipset LPC Controller' class = bridge subclass = PCI-ISA cap 09[e0] = vendor (length 12) Intel cap 1 version 0 features: AMT, 4 PCI-e x1 slots
dmidecode lists the physical port connector in question:
Handle 0x0012, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: CN5001 Internal Connector Type: None External Reference Designator: CRT External Connector Type: DB-15 female Port Type: Video Port
and the standard 0x0166 graphics:
Handle 0x001D, DMI type 41, 11 bytes Onboard Device Reference Designation: Intel(R) Graphics 4000 Type: Video Status: Enabled Type Instance: 1 Bus Address: 0000:00:02.0
but nothing about the PCI-ISA bridge. So perhaps as David King suggests, the issue is that there is no driver being loaded for the ISA VGA device. This explains why we don't see it as a
none entry in the
pciconf listing— it's not a PCI device. What I don't know is how to get more information on this device in order to even figure out what driver to use, if that's the problem at hand.