Many thanks to the people who helped solving my problem.
Special thanks to:
Ram Rao (ram_at_ini.dec.com)
Brian Bahnmiller
Dr. Tom Blinn (tpb_at_zk3.dec.com)
Hereafter is the solution as proposed by Ram Rao.
>>>
TITLE: Digital UNIX V4.0 only displays 640x480 on a ATI Mach64 ISA option
Problem:
After an upgrade to Digital UNIX V4.0 the system will only display
X windows with a resolution of 640x480 on an ATI Mach64 ISA graphics card.
Symptoms:
The kernel only sees a generic VGA device during boot and will display
a startup message along the lines of:
vga0 at eisa0
640x480 VGA, 16 colors
vga0: generic VGA driver
Analysis:
The problem is due to the ECU data not being updated before the V4.0 upgrade.
With ECU V1.8 the ATI Mach64 graphics card is defined as a standard VGA
controller and Digital UNIX V4.0 therefore assumes that the card is only
capable of 640x480. The V1.9 ECU that comes with Digital UNIX V4.0 has a
configuration file specifically for the Mach64 and when this entry is used
the system can recognise the card correctly.
Solution:
Halt the system and insert the ECU V1.9 diskette into the drive. At the >>>
prompt type the command "ECU" and wait for the program to initialise.
The ECU program will give you a menu and you choose "Step 2: Add or remove
boards". Select the slot that is defined as "standard VGA controller" and
press DEL to remove the current definition. Go back into the menu and this
time select the empty slot that used to have the VGA definition and press
ENTER to add a board. The ECU will pause for a while to read the
configuration files and when it returns it will display a menu of valid
cards. Choose the ISA6400.CFG (ISA ATI MACH64 VGA controller) option and
select the EISA slot for that card. Press F10 to go back to the main menu
and then select Step 5 to save and exit.
Reboot the system and in the kernel configuration file change the graphics
controller line from:
controller vga0 at eisa0 slot ?
to:
controller ati0 at eisa0 slot ?
This will enable the ATI Mach64 device driver. Rebuild the kernel and
upon reboot the startup message will change to:
ati0 at eisa0
ati0: ATI Mach64-GX Rev. 3 (SVGA)
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Received on Mon Dec 29 1997 - 09:38:25 NZDT