Solaris 10, Ultra 30 and Monitor Problem

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Date: Tue, 29 Mar 2005 12:03:08 +0200
To: sunmanagers@sunmanagers.org

Hi All,

I installed an Ultra 30 with Solaris 10 GA. The installation went fine,
no problems. Then the machine rebooted and started Solaris 10. Again no
problems: I was able to login using CDE and configure my host. So then I
logged in and walked away. When I return my screen is black but when I
hit the 'any' key the screen-unlock screen appears and I can unlock the
screen. Everything is working fine, I'm happy.

But last week when I hit the 'any' the screen stays black. The machine
is still working because I can ssh to it. But I can't get any output on
the screen anymore, it stays black. The led besides the power key (on
the monitor) starts flashing rapidly. I rebooted the machine but it will
not put output on the screen. I disabled dtlogin and rebooted but still
no output on the screen.

What bothers me is that it used to work but that it suddenly stopped
working.

Anybody familiar with this situation and how I should solve this?

Monitor:
Sun CM751U SU

Machine:
bash-3.00# uname -a
SunOS boarsnest 5.10 Generic sun4u sparc SUNW,Ultra-30

bash-3.00# cat /etc/release
                         Solaris 10 3/05 s10_74L2a SPARC
           Copyright 2005 Sun Microsystems, Inc. All Rights Reserved.
                        Use is subject to license terms.
                            Assembled 22 January 2005

bash-3.00# prtconf | grep -v not
System Configuration: Sun Microsystems sun4u
Memory size: 704 Megabytes
System Peripherals (Software Nodes):

SUNW,Ultra-30
    scsi_vhci, instance #0
    options, instance #0
    pci, instance #0
        ebus, instance #0
            su, instance #0
            su, instance #1
        network, instance #0
        scsi, instance #0
            sd, instance #4
            sd, instance #0
            sd, instance #6
        pci, instance #0
            SUNW,hme, instance #1
    pci, instance #1
    SUNW,ffb, instance #0
    pseudo, instance #0

bash-3.00# ffbconfig -prconf

--- Hardware Configuration for /dev/fbs/ffb0 ---
Type: double-buffered FFB2 with Z-buffer
Board: rev 1 (Vertical)
PROM Information: @(#)ffb2.fth 2.2 96/12/16
FBC: version 0x2241906d
DAC: Brooktree 9068, version 4 (Pac1)
3DRAM: Mitsubishi 1309, version 3
EDID Data: Not Available
Monitor Sense ID: 6 (Sun monitor)
Monitor possible resolutions: 1024x768x77, 1024x800x84, 1152x900x66,
        1152x900x76, 1280x1024x67, 1280x1024x76, 960x680x112s, 960x680x108s
Current resolution setting: 1152x900x76
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