The Xserver for alpha (1.4.1 release) can not find the screen.
Kernel (1.4.2_ALPHA because of SCSI-problems) starts as follows:

[ preserving 322584 bytes of netbsd ELF symbol table ]
consinit: not using prom console
Copyright (c) 1996, 1997, 1998, 1999
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 1.4.2_ALPHA (GENERIC) #1: Tue Dec 21 02:31:27 MET 1999
    he@albatross.runit.sintef.no:/usr/src/sys/arch/alpha/compile/GENERIC
Digital AlphaStation 500/500, 500MHz
8192 byte page size, 1 processor.
real mem = 134217728 (2359296 reserved for PROM, 131858432 used by 
NetBSD)
avail mem = 112017408
using 1609 buffers containing 13180928 bytes of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), 21164A-0 ()
cia0 at mainbus0: DECchip 2117x Core Logic Chipset (ALCOR/ALCOR2), pass 
3
cia0: extended capabilities: 21<DWEN,BWEN>
cia0: using BWX for PCI config access
pci0 at cia0 bus 0
pci0: i/o enabled, memory enabled
de0 at pci0 dev 6 function 0
de0: interrupting at kn20aa irq 13
de0: DEC 21040 [10Mb/s] pass 2.4
de0: address 00:00:f8:22:5b:69
isp0 at pci0 dev 9 function 0
isp0: interrupting at kn20aa irq 12
isp0: Board Revision 1020A, loaded F/W Revision 40.0
isp0: Last F/W revision was 5.57
isp0: driver initiated bus reset
scsibus0 at isp0: 16 targets, 8 luns per target
sd0 at scsibus0 targ 0 lun 0: <DEC, RZ28D    (C) DEC, 0008> SCSI2 
0/direct fixed
sd0: 2007MB, 3045 cyl, 16 head, 84 sec, 512 bytes/sect x 4110480 sectors
cd0 at scsibus0 targ 4 lun 0: <DEC, RRD45   (C) DEC, 0436> SCSI2 
5/cdrom removable
pceb0 at pci0 dev 10 function 0: Intel 82375EB/SB PCI-EISA Bridge 
(PCEB) (rev. 0x15)
vga0 at pci0 dev 11 function 0: Cirrus Logic CL-GD5430 (rev. 0x47)
wsdisplay0 at vga0: console (80x25, vt100 emulation)
Intergraph product 0x00e3 (miscellaneous display, revision 0x60) at 
pci0 dev 12 function 0 not configured
eisa0 at pceb0
isa0 at pceb0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
lpt0 at isa0 port 0x3bc-0x3bf irq 7
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
isabeep0 at pcppi0
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
mcclock0 at isa0 port 0x70-0x71: mc146818 or compatible
wscons: wskbd0 glued to wsdisplay0 (console)
root on sd0a dumps on sd0b
isp0: Target 0 at 10MHz Max Offset 12, 16 bit wide, Tagged Queueing 
Enabled
root file system type: ffs
de0: enabling 10baseT port