<div>Dear Jordan</div> <div> </div> <div>I tried without specifying any modelines at all. But in this case also , the fickering is seen. Moreover, in 1280x1024 pixels screer resolution, X is unable start up. I am attaching the X log file along with this mail.  </div> <div>On 12/19/07, Jordan Crouse <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:jordan.crouse@amd.com" target="_blank">jordan.crouse@amd.com </a>> wrote: <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">On 19/12/07 14:59 +0530, pratish ganguly wrote: > Dear all > I am having a customised linux distribution installed on a thin client > with the following configuration. > AMD LX800 > Xorg version 7.2 > > The display driver that I am using is from xorg git > <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://gitweb.freedesktop.org/?p=xorg/driver/xf86-video-amd.git;a=summary" target="_blank"> http://gitweb.freedesktop.org/?p=xorg/driver/xf86-video-amd.git;a=summary</a> > > I am using three resolutions >   800x 600 > 1024x 768 > 1280x1024 > > The problem that I am facing is that when I am changing the resolution , > there is a flickering seen on the screen during X restart. Here is a list of > Modelines that i have tried out in my xorg.conf file Have you tried not specifying any modelines in your xorg.conf at all? The Geode driver has built in timings for most of the standard VESA modes that are correctly matched to the PLL.  Just comment out all of the modelines in your xorg.conf file, make sure that the vsync and hsync ranges are correct for your monitor, and specify the resolutions as normal. If that doesn't get any better, then please send a X log file, and we can see what modes the driver thinks it is using. Jordan </blockquote></div> With best regards Pratish Ganguly