diff options
Diffstat (limited to 'Documentation/fb/matroxfb.txt')
| -rw-r--r-- | Documentation/fb/matroxfb.txt | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/Documentation/fb/matroxfb.txt b/Documentation/fb/matroxfb.txt index 6506273ea..d79f6694f 100644 --- a/Documentation/fb/matroxfb.txt +++ b/Documentation/fb/matroxfb.txt @@ -105,7 +105,7 @@ problem and not mine, but I'm not sure. Configuration ============= -You can pass kernel command line options to vesafb with +You can pass kernel command line options to matroxfb with `video=matrox:option1,option2:value2,option3' (multiple options should be separated by comma, values are separated from options by `:'). Accepted options: @@ -276,16 +276,16 @@ And following misfeatures: + color keying is not supported + feature connector of Mystique and Gx00 is set to VGA mode (it is disabled by BIOS) - + DCC (monitor detection) protocol is not implemented + + DDC (monitor detection) is supported through dualhead driver + some check for input values are not so strict how it should be (you can specify vslen=4000 and so on). + maybe more... And following features: + 4bpp is available only on Millennium I and Millennium II. It is hardware limitation. - + current fbset is not able to set 15bpp videomode: you must specify - depth==16 and green.length==5. fbset does not allow you to set - green.length. + + selection between 1:5:5:5 and 5:6:5 16bpp videomode is done by -rgba + option of fbset: "fbset -depth 16 -rgba 5,5,5" selects 1:5:5:5, anything + else selects 5:6:5 mode. + text mode uses 6 bit VGA palette instead of 8 bit (one of 262144 colors instead of one of 16M colors). It is due to hardware limitation of Millennium I/II and SVGALib compatibility. @@ -330,6 +330,27 @@ TEXT Millennium I G200 TEXT 3.29 1.50 + +Dualhead G400 +============= +Driver supports dualhead G400 with some limitations: + + secondary head shares videomemory with primary head. It is not problem + if you have 32MB of videoram, but if you have only 16MB, you may have + to think twice before choosing videomode (for example twice 1880x1440x32bpp + is not possible). + + due to hardware limitation, secondary head can use only 16 and 32bpp + videomodes. + + secondary head is not accelerated. There were bad problems with accelerated + XFree when secondary head used to use acceleration. + + secondary head always powerups in 640x480@60-32 videomode. You have to use + fbset to change this mode. + + secondary head always powerups in monitor mode. You have to use matroxset + to change it to TV mode. Also, you must select at least 525 lines for + NTSC output and 625 lines for PAL output. + + kernel is not fully multihead ready. So some things are impossible to do. + + if you compiled it as module, you must insert i2c-matroxfb, matroxfb_maven + and matroxfb_crtc2 into kernel. + * Yes, it is slower than Millennium I. -- |