Low refresh rate

I have problems with my display, Benq g2225hda -- its refresh rate is 60Hz, although it should be more.
This is the part of xorg.conf, generated by nvidia-xconfig:
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
With empty xorg.conf, the rate is the same.
I'm not sure what to do. Please, help me and my eyes! :-)

its refresh rate is 60Hz, although it should be more.
Are you sure it should be more?
In the monitor page on BenQ site there is no mention of higher refresh rate.
Is the monitor resolution right? Have you checked in the monitor OSD?
With empty xorg.conf, the rate is the same.
*Without* xorg.conf and only with the bundled 10-evdev.conf and 10-quirks.conf files in /etc/xorg.conf.d the problem persist?
Is the command "nvidia-settings --load-config-only" launched when you log in your user session? If so try removing it.

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21.5 iMac GeForce 9400 - Low Refresh Rate

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I've freshly restarted the machine, and there's nothing odd installed on the system at all. It really appears there's a hardware problem with not being able to get to 60 fps.
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Could be a bad memory problem or an issue with Parallels. Try booting into Safe Mode and see if the panics cease.

Satellite M55-s3315: Screen refresh rate is 60 Hertz?!

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May be someone could explain me??
Thank in advance!!!

Hi
I have noticed that on some Toshiba notebooks the screen refresh rate is fixed on 60 Hz. I have two of them. On Tecra M1 is fixed and on Satellite 1900 not. I have tested it and there is no difference if the refresh rate is changed.
The TFT technology is much better than on usual monitors where the display flickering is visible on lower refresh rate. On display you will not see any flickering. In my opinion there is no reason for panic.
Enjoy the life!!!

IMac refresh rate

Does anyone know the refresh rate of the new iMac? The reason I am asking is low refresh rates sometimes gives me a headache and I can't seem to find this info any where on apple's site. I have a feeling I am not looking in the right section but I'm not totally sure.
Thanks,
Tony

There is NO Refresh Rate on LCD screens. That number is for the times per second the Scanning Guns of a CRT monitor redraws the screen, usually in the 60 to 75 (also could be as high as 85) times a second the screen is scanned/redrawn.
You can see that if you take a picture at a fast shutter speed of a CRT TV or computer monitor as part of the screen will be black or dark.
With a LCD screen it is redrawn all at the same time and is basically continuous.
If you are getting headaches from LCD screens then there is something wrong with the screen or your head.
Although with the new LED backlit screens it does pulsate the LEDs as they are One brightness, constant, and the way they lower the screen brightness is to turn the LED lights on and off at different rates to simulate a dimmer screen brightness.
There is a Long thread on this on this forum.

Need custom refresh rates to fix whining/squealing CRT

My new-to-me 2005 eMac is in excellent condition, except for the fact that its built-in CRT monitor whines/squeals at lower refresh rates. The only resolution with a high enough refresh rate to prevent whining is 800x600 (112 Hz). At least in OS 10.4 on my eMac, I can only choose one refresh rate for the built-in monitor per resolution in System Preferences => Displays (all other refresh rates grayed out).
*I need a procedure that will enable me to choose the highest possible refresh rates for resolutions of 1024x768 or higher.* Surfing the internet isn't much fun at 800x600! I understand that using an improper refresh rate will probably lessen the life of the CRT, but my eMac was rather inexpensive and need only last until I've finished saving for a new Mac Mini or MacBook. I've tried shareware programs such as DisplayConfigX and MoniTOR without success. *I think that SwitchResX is flexible enough to do what I need if I input the correct settings, but I do not know what those correct settings might be.*
Thanks in advance for your help!

Thanks for your reply. I agree with you that the eMac's normal refresh rates look fine. The problem is that any normal refresh rate below 112 Hz causes the CRT in my eMac to make an irritating high pitched sound; I think that the CRT is dying.
I've read online that it might be possible to repair the CRT itself, but I have neither the experience nor the tools to safely do such repair work (at least not without a lot of guidance) and it would probably cost more that the eMac is worth to pay an experienced technician to do the work. Using higher-than-normal refresh rates would definitely be the best solution for me.

Refresh Rates

Does anyone know the refresh rates of Apple's notebook computers? I can't seem to find this info any place. The reason I am asking is low refresh rates sometimes gives me a headache. I'm looking at the macbook pro and maybe the air.
Thanks,
Tony

I know that my 27" Apple Thunderbolt Display has a refresh rate of 59.95 Hz - but only because it's listed in Wikipedia. That's the only source that I know that you might visit to find refresh rates on specific models.
This Wiki article doesn't list the various refresh rates that may be on the MacBook Pros, though. I suppose it depends on the screen manufacturer...
Sorry,
Clinton

OS 10.3.9 defaults to a refresh rate that is too high for my monitor.

Hello experts!
I bought a great little NOVA 15" LCD VGA monitor which I love since it has a TV tuner built-in. It is capable of 1024 * 768 @ 56 to 75 Hz. Unfortunately, from start-up Panther uses a default of 85 Hz whenever this monitor is the only one attached, and nothing gets displayed.
I can leave the Mac on and swap VGA out to my old Apple 15" Multi-scan and the desktop is there. Now that I can see what I'm doing, I can change the refresh rate from 85 Hz to 75 or 70 or 60 Hz. Still leaving the Mac on and switching the VGA output back to the NOVA LCD results in a normally displayed picture at any of the 3 lower refresh rates. But if I open Display Preferences and press the Detect Displays button, the desktop disappears and the NOVA monitor indicates "no signal." As you may have guessed, Panther is trying to give it 85 Hz again.
The monitor is DDC 1/2b compatible, and the ATI 9200 is DDC 2a/b compatible, so they should be sending the right info to each-other.
What I would like is for someone to tell me how to make the Finder change the Monitor settings to 1024 * 768 @ 70 Hz in a way that can be assigned to a Function key (say F5). That way, when the Mac has finished starting-up, I can just press F5, and even though the screen is blank the Finder will run a little program to change the monitor settings and, voila, I will have a working display.
I have looked into Apple Script, but it seems to have no control over this sort of function (unless I have missed something).
Many thanks in advance, and Happy New Year!
1.1GHz G3 B&W, ATI 9200, 512MB RAM Mac OS X (10.3.9) Logitech gaming mouse MX510

The router is much, much newer than the computer, perhaps some characteristic of the WiFi network as it's currently setup is preventing the computer from connecting.
Try to go back to the basics: set your WiFi network to "b" mode only (i.e., turn off "g") and termporarily remove the password from it. See if the computer will at least establish a connection at that point. Then start turning on one thing at a time ("g" mode, then security, etc).
Not sure what format your WEP key is, but if it's not 10 characters (the minimum for the standard, which constitutes a 64-bit key), you can try making it that long. If it's 13 or 26 characters, it might be a higher encryption than the computer can support.
If all else fails, you could try looking on ebay/craigslist for a copy of Tiger to install on the iMac, which would have software support for more WiFi encryption schemes. Also, it would provide software support for USB WiFi adapters that would also be able to connect to more modern networks.

Refresh rate HP 850 G1 (Intel 4400)

Hi all, I have a HP 850 G1 laptop and in general I'm very happy with it. In the past I only had a slight issue with screen flickering at lower brightness settings, but setting the refresh rate to 40p hz resolved that issue. After updating to Windows 10, however, it was no longer possible to set the refresh rate to 40p hz. Since I hoped reverting back to Windows 8 would solve it, I performed a factory reset. I am currently using Windows 8 again but it's still not possible to switch to 40p hz, not even through the Intel Custom Mode App. The graphics report from the Intel graphics control panel confirms that the monitor supports the1920x1080x40p hz mode. Any help/suggestions to enable the 40p hz setting again is greatly appreciated! Driver Version: 10.18.14.4251
Operating System: Windows* 8 Pro (6.2.9200)
Default Language: Dutch (Netherlands)
Physical Memory: 3993 MB
Vendor ID: 8086
Device ID: 0A16
Device Revision: 09
Video BIOS: 2175.1
Current Resolution: 1920 x 1080
Processor: Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz
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Processor Graphics in Use: Intel(R) HD Graphics 4400
Shader Version: 5.0
OpenGL* Version: 4.3
OpenCL* Version: 1.2
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00 FF FF FF FF FF FF 00 0D AE C2 15 00 00 00 00
04 17 01 04 95 22 13 78 02 46 35 9E 57 57 94 27
14 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 B4 3B 80 4A 71 38 34 40 5A 3C
69 00 58 C2 10 00 00 1A CD 27 80 4A 71 38 34 40
5A 3C 69 00 58 C2 10 00 00 1A 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02
00 0C 33 FF 0F 3C 96 21 14 33 96 00 00 00 00 70

Hi
I have noticed that on some Toshiba notebooks the screen refresh rate is fixed on 60 Hz. I have two of them. On Tecra M1 is fixed and on Satellite 1900 not. I have tested it and there is no difference if the refresh rate is changed.
The TFT technology is much better than on usual monitors where the display flickering is visible on lower refresh rate. On display you will not see any flickering. In my opinion there is no reason for panic.
Enjoy the life!!!

Second display refresh rate lower in Mac OSX than Windows

I use a Mitsubishi Diamond Pro 2070SB CRT monitor connected to my MacBok via a miniDVI to VGA adapter; I span the desktop on both monitors (i.e. I do not use the Mirror Displays option). I use this configuration in both Mac OSX and Windows (via bootcamp). On Windows, I can set the refreesh rate of my CRT monitor to 75 Hz at 1600x1200, but I am stuck to 60 Hz on Mac OSX at 1600x1200. To get a more respectable refresh rate on my CRT, I need to lower the resolution to 1400x1050.
Obviously, the video card of the MacBook can handle a second display at 1600x1200 at 75 Hz since I can do that on Windows. Any ideas how to get the same result on Mac OSX?

Either DisplayConfigX or SwitchRes X should be able to remedy this. But I am at a loss to explain why OS X would itself not allow for the 75Hz choice.

Macs Won't Forget Refresh Rate - LCD Refresh Out of Range

I have a new Viewsonic LCD for an old G4. I had to use an ADC to DVI adapter.
The first time I booted up my Mac, the monitor worked fine. I went into the Display Preferences and, like an idiot, I selected 90 hz because, like an idiot, I thought 90 hz was better than 60 hz.
My screen went black and the monitor said "Frequency out of range", etc. I have talked to AppleCare and I have tried everything and nothing I do gets this Mac to revert to 60 hz at 1280 x 1024.
Tried zapping PRAM, didn't work.
Tried booting into Safe Mode and selecting another resolution. I do that, reboot, it reboots in that lower resolution. I select 1280 x 1024 and my screen goes black because it's going into that 90 hz.
Created another account, didn't work.
I plugged in my old CRT into the VGA port. I was able to select 1280 x 1024 at 60 hz. Turned off the Mac. Plugged in the LCD. Turned the Mac back on and it went black.
It does this when you log in. The actual bootup is in 1280 x 1024 60 hz. I get the login screen fine. It's when I log in, into any account, it goes back to that 90 hz mode.
In Windows, if you select a resolution or refresh rate, a dialog comes up asking you if this mode is OK and if after 15 seconds you don't click on anything, it reverts back to the original resolution. Apple doesn't want to do that, I guess, because they want me to use their monitors.
Any ideas?
Thanks!

You should probably just trash the preferences file(s). That will give you a fresh start with the Viewsonic. See this thread:
http://discussions.apple.com/thread.jspa?messageID=3308488&#3308488

PowerMac G4 533DA & HDTV - video resolution / refresh rate problem

Hope someone can help, I need to access more resolution / refresh rates than I currently get in the Leopard display control:
I have a PowerMac G4 533 Digital Audio running Leopard 10.5.8 (unsupported). It has an upgraded AGP videocard, a ( flashed PC - RV200 chipset) Radeon 7500 w/ 64MB and a DVI output w/ a VGA adapter. I have used this Mac perfectly with my 19" widescreen Samsung SyncMaster 940BW, at a resolution of 1440 x 900 / 60Hz / millions of colors. This monitor is actually for my MacPro, but I used it for the G4 to set it up.
I moved it to my living room to use as a basic HTPC. Since it runs Leopard, it has up to date VLC, Quicktime for video files and a working Superdrive for movies. I don't expect it to play anything more than 480p properly, I think that was the best I got on YouTube. But if I have a DVD ripped to DivX or MP4 it plays them fine on the Samsung monitor.
I connected it to my Viewsonic N3760w 37" 1080 HDTV. It turns on, gray screen w/ Apple and gives me a working desktop. The problem is that I cannot get it to give me the correct resolution and more importantly it seem to have the wrong refresh rate. It is currently set at 1280 x 768 / 60Hz / millions of colors. The screen give me like a small line slowly moving up across screen, higher refresh rates only make it movie faster up the screen.
According to my Viewsonic, these are the resolutions for computer using the VGA plug on the tv:
PC - 1360x768 (preferred) , 1024x768, 1280x768
Mac G3/G4/G5 - up to 1280 x 1024, 1280x720 (preferred)
Please note all of these are lower resolution than my Samsung monitor. My Viewsonic also has on screen adjustment of " phase " and " frequency " as well as the usual color, contrast, etc available. Is there a 3rd party app to manually adjust the resoluion and refresh rate? I have seen Windows programs, does one exist for Mac OS X?
TIA, sorry for the long post

My Viewsonic also connected by VGA, no problem.
I wish I knew more. I checked out the app you did a trial of. I noticed this statement on their web site: Quote
"After rebooting monitor stays blank
For some reason your monitor does not accept the installed frequency. SWITCH IT OFF!"
This is the type of statement that would 'worry me.' -- having the phrase: SWITCH IT OFF! all in caps seems to imply a possibility of damage...which I mentioned in my initial post. (and the site goes on to talk about how you should even then connect another monitor to change the settings you've made that were not accepted).
As I said, though, I wish I knew more for sure about this. It seems that you not only did the obvious of checking System Peferences>Display, but also realize the Viewsonic has buttons that can influence it's screen image, most about position of the image on the screen but at least one item about resolution on mine. (under Setup Mode)
For what it's worth, my Viewsonic is about 6 years old now, still fine, and has eight (8) possible resolutions shown in System Preferences.
Re: Your numbers.
It is currently set at 1280 x 768 / 60Hz / millions of colors.
PC - 1360x768 (preferred) , 1024x768, 1280x768
Mac G3/G4/G5 - up to 1280 x 1024, 1280x720 (preferred)
If you're only talking about a difference of 1280 x 768 and G4 1280 x 1024, perhaps just stretching the picture using the Viewsonic buttons is the way to go.
Or, from the numbers, perhaps the G4 just wants a resolution closest to it's preferred state!?
Anyhow, good luck.

24" iMac refresh rate

I am having all those horrible problem with battlefield 2142 that everyone else is having, but i just found the file that has all the configurations for the game, such as the screen resolutions. My normal resolution is at 1920x1200, but the game resolution is stuck at 1024x800 @ 60hz. i tried to enter the larger resolutions including 1920x1200 but the game just crashes. SO thinking about it i think i have the wrong refresh rate. i went through system preferences and at the refresh rate says "n/a" as seen here....
!http://farm2.static.flickr.com/1165/1427575277e25330d756o.jpg!
i also checked system profiler... nothing....
!http://farm2.static.flickr.com/1237/1428482292a9cb9b3555o.jpg!
that being said does anyone know the refresh rates for the reolutions of the 24" iMac?
the help would be greatly appreciated by many including myself x100....

Roger Wilmut1 wrote:
I suspect that 'refresh rate' is only applicable to CRT monitors: my flat-panel iMac has it greyed out as well.
Not sure if the lack of refresh rate selection is normal for an iMac, but I can defnitely select the refresh for my 17" LCD monitor.
It seems more likely that the game simply won't work at higher than 1024x800 - particularly as 1920x1200 is a widescreen format and the game very likely wants a 4x3 format. Try setting your monitor to 1024x768
Some games will refuse to run at resolutions lower than 1024x768 or 800x600, but I've never heard of a game that would refuse to be set at a higher resolution…

What should my screen refresh rate be?

Hi guys, ive never really understood the refresh rate for screens. I have a geforce 4 ti4200, and my refresh rate is 60hertz, what should it be, or whats the best? Thanks sasarchiver

100 and more is the best for your eyes. 85 is the lower limit for "blindness"..... ; 60Hz is the lowest possible of your monitor and can harm your sight when long-acting.
you have max. vertical and horizontal freq. of your monitor and a screen resolution (for example horizontal 1024x768 vertical)
so you will know the max vertical freq. by counting: (max horizontal freq of your monitor)/(vertical screen resolution)*(0,95)=max refresh rate
eg: you have max 110kHz of horizontal freq. and screen resolution of 1024x768
so: (110000/768)*0,95=136Hz
this is the max refresh but the graphics cards sopports only 120Hz so you choose 120Hz in your graphics driver 120Hz for this resolution.

Suggested Resolution & Refresh Rate for 19-inch Monitor

Just had to replace my old 17-inch Apple Graphite Display. I stayed with a CRT and found a new 19-inch Dell M993s for pretty cheap.
Now I'm trying to decide what the best screen resolution and refresh rate is...
The HTML files that came on the Dell CD-ROM give recommended optimal settings for Windows OS's. But I'm not sure I should go by those for Tiger.
Any suggestions?

Just to make it completely clear
You need to have the screen refresh rate set above 75hz so that screen refresh is less visible, the lower the number the slower the refresh rate and therefore the more visible it is and the more strain on the eye. The higher the refresh rate the better.
Find the resolution which gives you 85hz or higher and which also makes best use of screen without making everything really small and hard to see or to read.
I have a 19" Lacie and have it set to 1280 x 1024 85hz refresh rate.
Mark

Changing default monitor refresh rate

Hello-
I have just installed x86 Solaris8 on my system at home. I have a TNT2 Ultra card and I am using the default Nvidia TNT2 drivers included with the install on a Hitachi Superscan Monitor. I am capable of displaying the Solaris CDE at 1600x1200 but I have display issuesthat force me to reset my vertical and horizontal positioning every time I turn on the monitor or ever time the screen resolution changes.
This problem has existed ever since I got my videocard back whenI still had Win98 on the machine. The only way to correct it was to set the default refresh rate for all resolutions to 60Hz.
Is it possible to do this in Solaris8 and how?
Any assistance will be greatly appreciated!
Thank you,
Daniel J. Noah

stop the dtlogin, login on the text console, and run kdmconfig.
In kdmconfig, choose the video card menu entry, don't make changes
to the video card but use on of the multifrequency monitor entries.
For example, the multifrequency monitor entry upto 110kHz should give
~85 Hz refresh rate at 1600x1200, use one of lower freq. entries to
tune down the refresh rate...

Low refresh rate

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