> > >Gibt es irgendwo im Netz einen Vergleich zwischen dem SVGA X-Server und
> > >dem für das FrameBuffer Device?
> > >Außerdem: Wie ermittle ich die Modelines für meinen Monitor? 1024x768
> > >auf der Console wäre schon recht nett... mehr als 60 Hz auch! Die Doku,
> > >die ich gefunden habe, war noch recht dürftig...
>
> > Für diesen letzten Teil Deiner Nachricht kann ich Dir empfehlen das Program
> > fbset zu installieren. Damit kannst Du auf der Console fast beliebige
> > SVGA-Modes einstellen. Ich read' dabei 1152x864x70Hz einzurichten :-))
>
> Dann werde ich mich also mal ein wenig länger mit der Sache beschäftigen
> müssen...
Frequently Asked Questions about the usage of fbset
This document tries to answer questions a user might have when installing
and using fbset. Please make sure you read this before sending questions or
bug reports to the maintainers.
If you have any questions you think should be answered in this document,
please let me know.
Hartmut Koptein <[EMAIL PROTECTED]>
^L
==============================================================================
1.1. How to set my matrox graphicboard for the framebuffer and with lilo?
1.2. How to do this with other graphic cards?
2.1 What is the difference between the old XF86Config and the one for fb?
^L
==============================================================================
1.1. How to set my matrox graphicboard for the framebuffer and with lilo?
{HK} Put this line into the /etc/lilo.conf: (some examples)
append="video=matrox:xres:1152,yres:864,pixclock:10869,left:56,right:106,upper:20,lower:1,hslen:160,vslen:10,depth:8"
append="video=matrox:vesa:279,fv:85"
append="video=matrox:xres:1280,yres:1024,pixclock:7124,left:184,right:12,upper:30,lower:3,hslen:160,vslen:3,sync:3,depth:8"
1.2. How to do this with other graphic cards?
{HK} Look at /usr/doc/fbset/examples/fb.modes.ATI for say 1024x768
This gives:
mode "1024x768-75"
# D: 78.75 MHz, H: 60.023 kHz, V: 75.03 Hz
geometry 1024 768 1024 768 8
timings 12699 176 16 28 1 96 3
hsync high
vsync high
endmode
To compare this for the lilo append line we have
append="video=XXXXXX:xres:1024,yres:768,pixclock:12699,left:176,right:16,upper:28,lower:1,hslen:96,vslen:3,sync:3,depth:8"
The frame buffer device uses the following fields:
- screen resolution is xres:1024 yres:768
- pixclock: pixel clock in ps (pico seconds) 12699
- left_margin: time from sync to picture 176
- right_margin: time from picture to sync 16
- upper_margin: time from sync to picture 28
- lower_margin: time from picture to sync 1
- hsync_len: length of horizontal sync 96
- vsync_len: length of vertical sync 3
2.1 What is the difference between the old XF86Config and the one for fb?
{HK} There aren't many differences, all fonts, kbd, mice and monitor settings
are the same.
But you have choices. For fbdev you don't need a modeline, you can use the
same resolution as on the consoles, setable with fbset (Modes "default").
# **********************************************************************
# Server for the Linux Frame Buffer Device
# **********************************************************************
Section "Device"
Identifier "Linux Frame Buffer Device"
# option "no_accel"
EndSection
# **********************************************************************
# Screen/Display section
# **********************************************************************
Section "Screen"
Driver "fbdev"
Device "Linux Frame Buffer Device"
Monitor "Panasonic PanaSync/Pro5"
DefaultColorDepth 16
SubSection "Display"
Modes "default"
EndSubsection
EndSection
With modelines, it is the same as without fbdev. But then you should
check your modeline with fbset --xfree86. This shows you the 'xf86'
modeline from the fbdev settings. Here some examples (don't use it
without checking your setup first):
ModeLine "640x480" 30.438 640 704 768 832 480 512 514 546 -HSync -VSync
ModeLine "800x600" 49.553 800 864 928 992 600 632 634 666 -HSync -VSync
ModeLine "832x624" 52.995 832 896 960 1024 624 656 658 690 -HSync -VSync
#ModeLine "1024x768" 76.064 1024 1088 1152 1216 768 800 802 834 -HSync -VSync
ModeLine "1024x768" 99.801 1024 1024 1120 1312 768 789 804 845 -HSync -VSync
ModeLine "1152x870" 94.358 1152 1216 1280 1344 870 902 904 936 -HSync -VSync
ModeLine "1152x900" 130.000 1152 1320 1360 1620 900 901 905 943 +HSync +VSync
ModeLine "1280x960" 125.645 1280 1312 1456 1680 960 961 964 1000 -HSync -VSync
ModeLine "1280x1024" 144.551 1280 1352 1496 1632 1024 1025 1028 1059 +HSync
+VSync
ModeLine "1280x1024" 155.000 1280 1384 1528 1688 1024 1025 1028 1066 +HSync
+VSync
2.2 I have an valid XF86Config file, but no /etc/fb.modes file. Any hints?
{HK} Sure. :-)
With an available and correct /etc/XF86Config file (an old setup) you can use
the /usr/sbin/modeline2fb to convert the modelines into /etc/fb.modes to
to use it with fbset.
Or you put the fb.modes.ATI (/usr/share/doc/fbset/examples) into /etc/ as
fb.modes (perms root.root 644). The timings are very compatible with other
graphicboards then ATI.
^L
==============================================================================
Answers were given by:
{HK} Hartmut Koptein, <[EMAIL PROTECTED]>
^L
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