Hello Mark !
I wrote:
>> Here's what appears to be the relevant portion of XFree86.0.log:
>>
>> (II) NV(0): EDID Version: 1.3
> [...]
>> (II) NV(0): Ranges: V min: 56 V max: 75 Hz, H min: 30 H max: 81 kHz,
PixClock
>> max 140 MHz
> [...]
>> (II) NV(0): SyncMaster: Using hsync range of 30.00-81.00 kHz
>> (II) NV(0): SyncMaster: Using vrefresh range of 56.00-75.00 Hz
Mark replied:
> The server has built in the following 1280x1024 modes:
>
> /* 1280x1024 @ 60Hz (VESA) hsync: 64.0kHz */
> /* 1280x1024 @ 75Hz (VESA) hsync: 80.0kHz */
> /* 1280x1024 @ 85Hz (VESA) hsync: 91.1kHz */
That last one's hsynch is too high, but the first two should fly.
> The 60 and 75 Hz builtin VESA modes should run fine on your
> monitor and should be used automatically if you've specified
> "1280x1024" on the Modes line in your Subsection "Display" of
> the XF86Config, provided this hasn't been overridden with an
> explicit Modeline of the same name ("1280x1024") in the
> XF86Config file or you forced a virtual desktop size that was
> smaller. I suspect the Debian tool you used messed this up
> either by adding a line with the "Virtual" keyword or by
> overridding the builtin "1280x1024" modelines with one that
> was inappropriate for your monitor. I'd have to see the
> XF86Config file to be sure.
OK:
... snippage ...
Section "Device"
Identifier "Trident Microsystems TGUI 9660/938x/968x"
Driver "trident"
EndSection
Section "Device"
Identifier "NVidiaGForce"
Driver "nv"
EndSection
Section "Monitor"
# Block type: 2:0 3:fd
# Block type: 2:0 3:fc
Identifier "SyncMaster"
VendorName "SAM"
ModelName "SyncMaster"
# Block type: 2:0 3:fd
HorizSync 30-81
VertRefresh 56-75
# Max dot clock (video bandwidth) 140 MHz
# Block type: 2:0 3:fc
# Block type: 2:0 3:ff
# DPMS capabilities: Active off:yes Suspend:no Standby:no
Mode "1280x1024" # vfreq 60.020Hz, hfreq 63.981kHz
DotClock 108.000000
HTimings 1280 1328 1440 1688
VTimings 1024 1025 1028 1066
Flags "+HSync" "+VSync"
EndMode
# Block type: 2:0 3:fd
# Block type: 2:0 3:fc
# Block type: 2:0 3:ff
EndSection
Section "Monitor"
Identifier "Generic Monitor"
HorizSync 30-57
VertRefresh 43-72
Option "DPMS"
EndSection
Section "Screen"
Identifier "Default Screen"
Device "Trident Microsystems TGUI 9660/938x/968x"
Device "NVidiaGForce"
Monitor "SyncMaster"
# Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768"
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
Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection
Section "DRI"
Mode 0666
EndSection
Mark may notice that there's no 1280x1024 settings at all. Please
believe me when I tell you that I've run dpkg-reconfigure
xserver-xfree86 as root (more than once !) but not until today
did I notice that the changes I made have not been saved into
the XF86Config-4 file. When I run the same command on the other
debian PC, please rest assured that the changes, however wrong-
headed they may be, are indeed saved ... even though the monitor
then has to have its screen resolution upward-adjusted from plain
old VGA to something useful. The plot thickens ...
Here are the permissions for this PC's XF86Config-4 file:
-rw-r--r-- 1 root root 3931 2006-06-23 11:41 XF86Config-4
And here they are for the other debian PC's XF86Config-4 file:
-rw-r--r-- 1 root root 3468 2006-06-23 17:18 XF86Config-4
Which leaves me utterly mystified ...
George
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