5.2.1 hang during install attempt.

[Egon Spengler]

My box is currently running 4.9, and 4.10 boots to sysinstall without 
difficulty on this box
dmesg output:
  AMD Features=0xc0440000<RSVD,AMIE,DSP,3DNow!>
real memory  = 268435456 (262144K bytes)
avail memory = 257081344 (251056K bytes)
Preloaded elf kernel "kernel" at 0xc040b000.
Pentium Pro MTRR support enabled
md0: Malloc disk
Using $PIR table, 6 entries at 0xc00fa040
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
agp0: <VIA 82C8363 (Apollo KT133A) host to PCI bridge> mem 
0xa0000000-0xa3ffffff
 at device 0.0 on pci0
pcib1: <VIA 8363 (Apollo KT133) PCI-PCI (AGP) bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <ATI model 5961 graphics accelerator> at 0.0 irq 3
pci1: <ATI model 5941 graphics accelerator> at 0.1
rl0: <RealTek 8139 10/100BaseTX> port 0x2000-0x20ff mem 
0x80300000-0x803000ff ir
q 3 at device 3.0 on pci0
rl0: Ethernet address: 00:48:54:5b:7a:c9
miibus0: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus0
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl1: <Accton MPX 5030/5038 10/100BaseTX> port 0x2400-0x24ff mem 
0x80400000-0x804
000ff irq 10 at device 4.0 on pci0
rl1: Ethernet address: 00:10:b5:ec:d6:b0
miibus1: <MII bus> on rl1
rlphy1: <RealTek internal media interface> on miibus1
rlphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pcm0: <Yamaha DS-1E (YMF744)> port 0x2890-0x2893,0x2800-0x283f mem 
0x80200000-0x
80207fff irq 5 at device 5.0 on pci0
pcm0: <SigmaTel STAC9708/11 AC97 Codec>
isab0: <VIA 82C686 PCI-ISA bridge> at device 20.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 82C686 ATA66 controller> port 0x2880-0x288f at device 20.1 
on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
uhci0: <VIA 83C572 USB controller> port 0x2840-0x285f irq 11 at device 
20.2 on p
ci0
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: <VIA 83C572 USB controller> port 0x2860-0x287f irq 11 at device 
20.3 on p
ci0
usb1: <VIA 83C572 USB controller> on uhci1
usb1: USB revision 1.0
uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
ukbd0: Chicony Compaq Internet Keyboard, rev 1.10/1.02, addr 2, iclass 3/1
kbd0 at ukbd0
uhid0: Chicony Compaq Internet Keyboard, rev 1.10/1.02, addr 2, iclass 3/1
pci0: <unknown card> (vendor=0x1106, dev=0x3057) at 20.4
orm0: <Option ROMs> at iomem 
0xc0000-0xcffff,0xe9000-0xebfff,0xec000-0xeffff on
isa0
pmtimer0 on isa0
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse, device ID 3
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
IP packet filtering initialized, divert enabled, rule-based forwarding 
enabled,
default to deny, logging limited to 10 packets/entry by default
ad0: 28629MB <QUANTUM FIREBALLlct20 30> [58168/16/63] at ata0-master UDMA66
ad1: 5495MB <Maxtor 90576D4> [11166/16/63] at ata0-slave UDMA33
acd0: CD-RW <SAMSUNG CD-R/RW DRIVE SW-252F> at ata1-master UDMA33
acd1: DVD-ROM <SAMSUNG DVD-ROM SD-612> at ata1-slave UDMA33
Mounting root from ufs:/dev/ad1s1a
drm0: <ATI Radeon 9200> port 0x1000-0x10ff mem 
0x80000000-0x8000ffff,0x88000000-
0x8fffffff irq 3 at device 0.0 on pci1
info: [drm] AGP at 0xa0000000 64MB
info: [drm] Initialized radeon 1.8.0 20020828 on minor 0
info: [drm] Loading R200 Microcode
 When attempting to install 5.2.1, the install hangs (after using ANY of 
the menu offerings) at the following point (verbose logging enabled):
pci_cfgintr: 1:0 INTA BIOS IRQ3
    found->vendor=0x1002, dev=0x5961, revid=0x01
                bus=1, slot=0, func=0
                class=03-00-00, hdrtype=0x00, mfdev=1
                cmdreg=0x0007, statreg=0x02b0, cachelnsz=8 (dwords)
                lattimer=0x42 (1980ns), mingnt=0x08 (2000ns), 
maxlat=0x00(0ns)
                intpin=a, irq=3
                powerspec 2 supports D0 D1 D2 D3 current D0
                map[10]: type 3, range 32, base 00000000, size 27, 
memory disabled
and there it sits, requiring hard reboot to start up again. It appears 
to be related to the irq 3, which both one nic and my video card share, 
but as I indicated, 4.9 is installed, and 4.10 will boot to sysinstall 
with no problems. I have googled using the various info and nothing 
pertinent appears regarding this. Assistance would be greatly appreciated.