I also fixed it using almost the same, but only having the following in /etc/X11/xorg.conf works perfectly for me on Averatec 3200.
Section "Device" Identifier "VIA Technologies, Inc. VT8378 [S3 UniChrome] Integrated Video" Driver "openchrome" BusID "PCI:1:0:0" EndSection
Section "Monitor" Identifier "Generic Monitor" Option "DPMS" HorizSync 28-51 VertRefresh 43-60 EndSection
Section "Screen" Identifier "Default Screen" Device "VIA Technologies, Inc. VT8378 [S3 UniChrome] Integrated Video" Monitor "Generic Monitor" DefaultDepth 24 SubSection "Display"
Depth 1 Modes "1024x768" "800x600" "640x480" EndSubSection SubSection "Display" Depth 4 Modes "1024x768" "800x600" "640x480" EndSubSection SubSection "Display" Depth 8 Modes "1024x768" "800x600" "640x480" EndSubSection SubSection "Display" Depth 15 Modes "1024x768" "800x600" "640x480" EndSubSection SubSection "Display" Depth 16 Modes "1024x768" "800x600" "640x480" EndSubSection SubSection "Display" Depth 24 Modes "1024x768" "800x600" "640x480" EndSubSection EndSection
I also fixed it using almost the same, but only having the following in /etc/X11/xorg.conf works perfectly for me on Averatec 3200.
Section "Device"
Identifier "VIA Technologies, Inc. VT8378 [S3 UniChrome] Integrated Video"
Driver "openchrome"
BusID "PCI:1:0:0"
EndSection
Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
HorizSync 28-51
VertRefresh 43-60
EndSection
Section "Screen"
Identifier "Default Screen"
Device "VIA Technologies, Inc. VT8378 [S3 UniChrome] Integrated Video"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection