I WANT TO GET RID OF.........

[mowman]

Hey

I've got 'drake 7.2 and XFree86 4.0.1 running on my laptop, but I still can't figure how in the heck I'm supposed to get rid of this vertical flickering (similar to flickering when running 60Hz or below on CRTs). This is kinda unusual since in Windoze 98, I never see any vertical refresh flickering

I tired changing my monitor in Xconfigurator, but my LCD seems to ONLY respond to choosing the 'High Frequency 1280x1024 @ 70Hz' monitor under GENERIC...whever choosing LCD 1400x1050 (which my LCD is capable of doing), X crashes by displaying a black screen

So how can I manually get rid of these flickerings? I don't know anything about LCD timings (Horz or Vert)...basically clueless here. BUT, I do know that in Win98, the vert refresh is at 60Hz (it really seems like 100Hz+ though, because on an CRT, my eyes can detect 85Hz)

Anyone know what I can do here?

---
My second optioin is to enable the framebuffer b/c I dont see any flickering.

As a last resort, how would you enable Framebuffer as default (instead of Mach_64 which I'm using right now)...and would this run X properly??? Is it recommended?

PS. I DONT WANT MY LCD TO BLOW UP EITHER http://www.linuxnewbie.org/ubb/smile.gif

[Avatar]

What you can do is go to the laptop manufacturer's web site and look up the specs for the display. (I know Toshiba does a pretty good job of giving all the details you need.) You can then plug those values in via xf86config or by manually editing the XF86Config-4 file. (It's pretty well layed out and easy to spot where you need to make the changes.)

[mowman]

Yeah...I went to support.dell.com and found in the tech spec. documents that the only refresh rate is only 60Hz for all resolutions and color depths.

Also, if I configure XFree86, I'm not so sure what numbers to put in the modeline

[Avatar]

That being the case, I would set the refresh range to just 60.

Like I said before, the XF86Config-4 file is REALLY well laid out for you. There is pretty much a little note stating what is what, including where the refresh rates go. If I remember correctly, that section is just before the mouse information.


------------------
Avatar

Linux Editor | www.evil3d.net (http://www.evil3d.net)

[nisim7]

Hey

I had the same problem on my desktop and I figured out that it wasn't a monitor problem (because I spent 1 hour trying to customize the settings). I went to the video cards and chose an "unlisted" card. Try a few of these. They won't harm your system because they have generic drivers.

Now my system works great

[mowman]

Yea, tired that too...but regardless of whether or not I choose "unlisted" or "Ati mobility P", both will work (but the refresh rate flickering still remains http://www.linuxnewbie.org/ubb/frown.gif )

More or less, it has to do strictly with the Modelines in XF86Config file in /etc/X11 or with the monitor I select. I'm still testing out stuff, but I crash (with a black screen) frequently whenever I decide to "test" the current configuration.

[Evil Jeff]

Try using a generic regular monitor, not an lcd monitor. I think dell lcds are a little different. Most lcds have edges, too, I've noticed. Dell goes all the way to the sides. I have an extra large monitor for my inspiron 7000 too. If you call dell support, they should be able to "unofficially" help you, too.

Evil Jeff
www.hellincorporated.com (http://www.hellincorporated.com)

[mowman]

Currently, the setting for the monitor is "High Frequency 70Hz @ 1024x768"...which seems to be the only choice that works.

I'll get in touch with dell.

Thanks for the help

[This message has been edited by mowman (edited 16 December 2000).]

[This message has been edited by mowman (edited 17 December 2000).]