53 lines
2.2 KiB
Plaintext
53 lines
2.2 KiB
Plaintext
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AST RESEARCH, INC. TECHNICAL BULLETIN #0710A 10-28-91
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=============================================================================
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SCO OPEN DESKTOP IN 800X600 VIDEO MODE
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PROBLEM: When using the Open Desktop release 1.0 and 1.11 in SuperVGA
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(800x600x16) mode, vertical bars and multiple horizontal images
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are displayed on the screen. The 640x480 and 640x350 modes work
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fine.
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CAUSE: The "grafinfo" file for the video contains some additional
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information which is only required for the AST VGA Plus card.
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SYSTEMS
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AFFECTED: All systems with integrated video.
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SOLUTION: To fix this problem complete the following steps:
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(Lines starting with the # sign indicate commands that should be
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entered at the root prompt).
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1) Bring the system down to single user mode (init 1).
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2) # cd /usr/lib/grafinfo/paradise.
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3) # cp vgaplus.xgi vgaplus.orig (you are saving the
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file vgaplus.xgi as vgaplus.orig).
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4) Edit the file vgaplus.xgi.
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5) Search for, and remove the following two lines
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from the file:
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out (0x3CE,0x0B); out(0x3CF,0x44); / *256k 16 bit */
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out (0x3CE,0x0C); out(0x3CF,0);
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6) Save the file and exit you editor.
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7) # mkdev graphics.
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8) Select "update" from the main menu.
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9) Choose the Paradise VGA Plus from the list of
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Adapters.
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10) Choose the VGA 800x600 16-color option from the
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list of Modes.
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11) Press return twice to accept the Default
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configuration, and accept the current setting.
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12) Choose "Quit" from the main menu, then "save".
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(This will update the grafinfo database to reflect
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the changes you have made to the file).
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The system does not need to be re-booted, just go back to multiuser mode and
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ODT will now work in 800x600 mode. This updated file will work correctly on
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the regular VGA Plus board also.
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