Operating Systems > Linux and UNIX

RedHat 8.0 Problem

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sAvAgE:
Computer P /// 450 384 MB Ram All OpenGL Defaults to 640 x 480 if I run some stuff at 800 x 600 the Play is too slow In Quake3 the FPS is 25 - 35 fps also Tux racer is at 640 x 480 I mean I can live with it Just a MATTER of trying to get it fixed

IS there a way in xf86config that I can specify a certain refresh rate for a certain resolution?

and yes I have tried start here settings display and  all the other resolutions are fine except anything under 800 x 600

voidmain:

quote:Originally posted by Centurian:
Cool!

Does it auto update and restart X or is it still necessary to restart before the new settings take effect?

I could not get any of the pics to load but I read through the article. Based on it there are still some serious problems with X and nVidia in Redhat 8.0.
--- End quote ---


Well, like has always been the case in XFree, once you have all the resolutions configured you only have to press CTRL+ALT+KPPLUS (KeyPad +) to cycle through your resolutions. No reboot or restart necessary, it happens instantly. Now changing color depth always took a restart of X for it to take effect.

I just tested that part and it will change your default color depth (256/16k/etc) but you still have to restart X before it will take effect. Changing color depth is not something one usually does anyway, usually it's just changing resolutions which like I said, still works by pressing CTRL+ATL+KPPLUS. I think the graphical display thing just changes your XF86Config which would require restarting X as it always has.

It's a nice graphical way to configure it though as you can select a driver, a monitor, tweak your rates etc in the advanced tab, something I haven't had to touch (in fact I haven't had to touch the graphical tool at all until you asked about it).

Centurian:
Savage,

I don't know of any way. Sorry.

VoidMain,

Hmmm ok well thanks for the info. To bad we will still have to restart X to change the refresh rate. I have all the monitor resolution setup no problem I was hoping we could change the monitor refresh rate and the desktop without having to logout or restart X.

I am glad to see graphical tools though to handle this at least that is a good step in the right direction.  

voidmain:

quote:Originally posted by Centurian:
Hmmm ok well thanks for the info. To bad we will still have to restart X to change the refresh rate. I have all the monitor resolution setup no problem I was hoping we could change the monitor refresh rate and the desktop without having to logout or restart X.
--- End quote ---


I'm confused by your use of the term "refresh rate". Once set you should never have to change it, and it's something that is set automatically when it detects your monitor. There are only two things that anyone might want to change after installation. That is the color depth (e.g. change from 8 bit color to 24 bit color), and the screen resolutions (e.g. change from 800x600 to 1024x768). The former (color depth) requires X to be restarted. The latter (resolution) does not need a restart of X.

When would anyone have a need to change their refresh rate? The highest possible refresh rate would always be preferred in my opinion (as long as your highest rate is higher than the frequency of flurescent lights if you are working in a room with such lighting). What has always pissed me off about Windows is the default refresh rate is always set at the lowest (60 or 65hz) which is exactly in the range that will get you massive flicker in a room with flurescent lights and blow out your retinas if you sit in front of such a monitor for any length of time.

The first thing I do when I walk into a room and see someone's monitor flickering is to increase the refresh rate for them. I have never had this problem in Linux. It always picks a very high refresh rate. That is as long as it detects your monitor and you don't have to set this manually, and if you did have to set it manually you should have set the refresh rate at the upper bounds of the monitor at that point.

In the automatic detection of your video card it will detect all the clock rates (refresh rate frequencies) that the video card is capable of. In the automatic detection of the monitor it will take the upper/lower bounds that monitor is capable of and match that up with the highest clock rate of the video card not to exceed the upper bounds of the monitor.

Or am I completely misunderstanding your issue?

[ October 05, 2002: Message edited by: void main ]

Centurian:
No actually you are right on the nose. That is the exact issue. When working with graphics (particularly in games) it is often necessary to change the monitor refresh rate, This is needed both for testing and for playing some games. I have found that some 3D linux games will not run unless I reset /etc/X11/XF86Config. This is a common thing with 3D graphics in general. Depending on what card you have with what monitor 3D can have problems running. For that reason it is necessary to change between default and optimal refresh rates.

Heheh you may be upsetting alot of people by changing their refresh rate.  

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