Hi, I've encountered some questions about using xrandr.<br>Any information is very appreciated.<br><br>thanks.<br><br>1. How xrandr detect usable resolutions?<br> Are they intersection of VBIOS and EDID?<br><br>2. Why xrandr list different resolution when using different video driver?<br>
When I specify vesa driver in xorg.conf, why the 'xrandr -q' result are different from intel driver.<br> (ex: When I use vesa driver, I can see 1024x768 )<br><br>3. Why xrandr resolutions listed are not the same with that listed in MS Windows?<br>
(Both installed native driver)<br> I use Intel native driver both on Linux and Windows, why usable resolutions are not the same.<br> (ex: It only list one resolution 1280x800 on Linux, <br> but 1280x800, 1024x768, 800x600 on Windows (Dell E6410))<br>
<br>4. Why xrandr addmode works on one machine, but failed on the other machine?<br> I have two different intel Arrandale notebooks that lack 1024x768 resolution,<br> And I use 'gtf 1024 768 60' result for xrandr addmode.<br>
It works on one machine (i5 M540) but failed on the other machine (i5 M520).<br><br>5. Why on some resolution, the two side of screen are black?<br> On one notebook that max resolution is 1280x800,<br> and when I use xrandr to set resolution to 1024x768, two side of screen are black.<br>