Hardware :: Not Correct Refresh Rate On External Monitor
Jun 17, 2010
I'm using Arch Linux and I just bought a ViewSonic P227f CRT monitor for photo editing, and while it works pretty well after just plugging it in, it seems that the refresh rates are a bit off.The monitor is supposed to be able to do 1920x1440 @ 84hz, but I can only select 75hz in Gnome's monitor settings. The monitor is also supposed to be able to display 2048x1536@74hz, but I can't even select that resolution. There's just a garbled image at that resolution. I'm using it on a laptop with an Intel X3100 GPU. Is that why I can't use the highest resolution? Or is it because of incorrect modelines?The monitor is identified in Gnome's monitor settings as 'ViewSonic Corporation 20"', which is also wrong since it's a 21" monitor.
I was able to locate the correct HorizSync and VertRefresh values in this post on the Ubuntu forums.
HorizSync: 30-130
VertRefresh: 50-160
From what I gather the max pixel clock is 340mhz.I tried making an xorg.conf that specified the hsync and vrefresh but it didn't make any difference. I also tried adding a new modeline to xrandr using a modeline calculator. But I couldn't really figure out how it worked. The calculator said that the "Dot clock" was over the max frequency and that I should use an interlacing mode.Now, if there was a tool similar to Ubuntu's displayconf-gtk I imagine I could just set the correct model and be done with it. But since that is pretty much dead in favor of xrandr (i guess?) and doesn't exist for Arch anyway I think, is there a way to specify the correct model using xrandr?
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Mar 26, 2011
I'm trying to use an external monitor to watch movies on my linux box (kubuntu maverick) but it results always out of sync. TV-out refresh rate is locked as you can see on the image i've attached right here. This is the output of the nvidia-settings query about the variable RefreshRate:
Code:
Attribute 'RefreshRate' (DeepBlue:0.0; display device: CRT-0): 60.02 Hz.
'RefreshRate' is an integer attribute.
'RefreshRate' is a read-only attribute.
'RefreshRate' is display device specific.
[Code]....
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Mar 20, 2010
I am having problems with the refresh rate if the screen. In the refresh mode of the monitor in the monitor options have only one option 60Hz. I have LG 24 + ATI Radon 3870, and have already installed the ATI driver via Ubuntu download center.
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Apr 14, 2011
I just upgraded from a 1280x1024 17" to a 1920x1200 24".However, at 1920x1200, I do not have an option to change the refresh rate to anything but 60Hz, but Id like to run 70 or 75Hz.My monitor is an Asus PA246Q. Digital Signal Frequency : 30~83 KHz(H)/ 50~76 Hz(V).I am running Debian 6.Video card is an ATI Radeon 4850/1GB, and I am using the fglrx driver.
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Aug 12, 2010
I'm running the great game "Capitalism Plus" w wine. This is really a Win-95 game but it runs fine under Wine (a big benefit of Linux, you can run those old Windows games again, which is impossible under WinXP...)
Anyway, here's the problem: The game runs only in 640x480. My monitor is a 22" widescreen 1920x1080. When I start Capitalism, the resolution changes to 640x480 which is fine. However, the refresh rate is 75Hz, which minimizes the actual / active screen to a small window in the middle of the monitor. (Not only for the game, but for the kde desktop.) When I set refresh rate to 60Hz (using krandrtray) everything is fine.
So here's the question: Is there any way I can create a bash-script that sets the refreshrate to 60Hz?
I'm running kde3.5, Debian Lenny on a AMD64 with ATI:s fglrx.
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Mar 8, 2010
I'm having a problem with my monitor's refresh rate after the most recent round of updates issued on March 6. When I login after a period of inactivity my monitor's refresh rate is set at 60 Hz, even though I always keep it set at 85 Hz.So I have to go in and change the refresh rate back to 85 Hz every time I log in to my computer.This has only started happening after the most recent updates.I tried downgrading X to a previous version but that did not fix the problem. I have an Nvidia graphics card and am using the Nouveau driver.Is anyone else having this issue? Does anyone have any ideas on how to fix this?
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Feb 21, 2011
I use kde and in it's control panel the only option it has is 50hz. I have an lcd with 1680x1050resolution, and 60hz max refresh rate. It has dvi input capability, but my video card does not so it's on vga. The current refresh rate is killing my eyes. Is there any other way of modifying it? Is there any change i can make in the xorg.conf? My graphic card is an integrated nvidia 7025.
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May 3, 2010
I just upgraded to 10.04 and I've noticed some flickering on my monitor... if I'm correct, the problem is the refresh rate. It is set to 60 Hz and it doesn't give me any options to change it. I would guess that the display drivers are installed correctly because I'm running a lot of CompizConfig effects without a problem Is there anything else that could be causing this problem?
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May 5, 2010
i have a Compaq V1100 monitor, which is capable of 75Hz refresh rate (i`m sure, it works under windows) but it works only on 60Hz under linux.my video card is a hd4850 and i use the proprietary fglrx drivers.i tried opensuse 11.0, 11.1 (installed drivers manually, not from repository), and now i have a 11.2 (this time the drivers are from repository the fglrx-desktop version)i have tried editing xorg.conf, using modes generated by gtf (maybe i copid them to the wrong section, but i tried putting them to the monitor and the modes section), tried disabling RandR1.2, also tried setting the monitor to vesa with 75hz refresh rate, i still cant set the refresh rate to 75hz (amdcccle lists only 60hz)
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May 18, 2010
I have an iBook which I just installed karmic after several tries due to issue beyond this thread. The specs of the are listed here: [URL].. ,but basically it boils down to the following:
* introduced 2003.10.22 at $1,099; replaced by 1.07 GHz model 2004.04.19
* requires Mac OS X 10.3 through 10.4.x, 10.5 not officially supported
* CPU: 800 MHz G4
* bus: 133 MHz
* performance:
[Code]...
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Jan 31, 2011
On an older computer of mine using an older CRT monitor, Ubuntu defaults to a monitor refresh rate that causes the screen to constantly flicker and flash, making it nearly unusable. Changing the rate to either 75 Hz or 60 Hz fixes the issue, but changing it through the Monitor settings only affects my user account; part of the loading screen, and the login screen, will continue to flicker and flash. Is there a setting I can adjust somewhere that will set the refresh rate for the entire system, not just my user account?
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Mar 11, 2011
How can I use gconftool-2 to find the monitor size and refresh rate?By size I mean pixels such as 1920x1080, not inches as in a 26-inch monitor.
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May 3, 2011
I'm currently running an up-to-date copy of Ubuntu 11.04, but I'm noticing some strange behavior with the monitor settings. First of all, I started investigating this because I'm seeing a lot of screen tearing while watching videos full screen as well as while the screensaver (lattice) is running. On Ubuntu 10.10 I was able to simply set the refresh rate of my monitor to 60Hz through the Nvidia tool and everything worked great. Now, this is no longer the case. I'm using a Samsung Syncmaster 205BW monitor with an Nvidia 8600 GT video card. They are connected with a DVI cable.The strange thing is, the default tool, Monitors, claims my monitor is "unknown" and will only allow me to select 50Hz, 51Hz, and sometimes 52Hz for the refresh rate.
The Nvidia tool claims that my monitor has been detected as a Samsung Syncmaster and is configured to run at 60Hz.However, another area of the Nvidia tool claims that my monitor is using a refresh rate of 59.95Hz. none of these solutions had any effect. I'm still seeing video tearing. I let the Nvidia tool re-write my xorg.conf file after trying these solutions.
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Jun 29, 2010
I start, e.g. Lightsmark having set up Vsync, so that video would be smooth and not tear. It shows 60FPS - just as monitor refresh rate - 60Hz, but as i see, video is still jerky when there are many objects rendered.
What could be the reason, i wonder? How could i investigate this?My video card is nvidia, Vsync etc. are set up via nvidia-settings.
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Jan 11, 2011
I recently switched my desktop from Fedora to CentOS. On Fedora it auto detects my refresh rate at 85 Hz. On CentOS by default it only allowed 60 Hz. I looked at the /etc/X11/xorg.conf file and the display settings were:
[Code]....
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Jun 5, 2011
I have installed Fedora 15 but find that there is no option for setting the Refresh Rate in Display Settings. This is needed since when I set the Screen Resolution to 1024 x 768, the vertical scroll bar goes out of the screen.
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May 15, 2011
i have just installed ubuntu 11.04.The thing is my screen is flickering but i cant find how o set my refresh rate o 75Hz to stop it.In the monitors panel it says monitor is unknown and i can only set the refresh rate as 50,51 and 52 Hz. how to set it to 75
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Aug 15, 2011
I just did a fresh install of natty on my desktop and at first I had a box bouncing around my screen saying input not supported. I changed my refresh rate from 50 to 52 and it got rid of it, but I still have the bouncing box on the login screen. How can I adjust the refresh rate for that?
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Aug 5, 2010
This morning I was looking around and went to the display settings and such. And I noticed refresh rate was at 75Hz. I changed it to 85Hz and the screen went black. I tryed to reboot but after I got passed the Login the screen went black again. Now I want to change it back to 75Hz because the monitor wont allow it.
How do I change it back to 75Hz from the login screen?
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Aug 9, 2010
First off I am dual booting Windows 7. While in Win7 I have absolutely NO monitor issues. Since installing 10.04 I get a shaky unreadable display. To remedy the situation temporarily I have adjusted the resolution to 1200/800 but this is not a fix just a band aid. I should be able to run 1920/1080. As soon as I do this I get the shaky screen. I cannot change the refresh rate from 60 mhz. Again I am apprehensive by posting this because I have been flamed in other forums simply for being a noob and not knowing what to do but I would love to tap into the resources of you more experienced members.
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May 7, 2014
I just got a CRT monitor today, used of course, and plugged it in, pleased with many things. However, the screen is blinking subtly as a result of low refresh rate. This monitor is supposed to be 1024x768 @87 hz and 1280x1024 @66hz (here are the specs [URL]. I only get the following from Xrandr:
Code: Select allfoo@debian:~$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096
VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.0*
800x600 60.3 56.2
848x480 60.0
640x480 59.9
Is there anyway I can get my desired resolution? I can't find the xorg.config which I read about.
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Mar 1, 2010
I use the integrated graphics card from intel -- Intel GMA3100.
At console mode, I set the resolution to 1024x768 through vga=ask.
But the refresh rate is too low at 60hz, and my eyes are uncomfortable.
I tried fbset utility, but it doesn't work on my machine. (There is no response)
increase the refresh rate to 75hz?
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Apr 11, 2011
I installed openSUSE last night thinking I'd give it a try after once using Ubuntu for a couple months and giving up on Windows completely. When I used Windows and Ubuntu I never had much trouble setting the resolution or refresh rates and ran my monitor at 1280x960 72Hz, openSUSE will let me select 1280x960, but the only refresh rate I can select is 60Hz...I've tried the default Nvidia driver that installed with the OS and I tried the one from the website, it's a Geforce FX 5200, is there some way to force the refresh rate to what I want it to be?
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Mar 3, 2010
I just installed Ubuntu 9.10 I have ATi HD5700 and its Catalyst drivers downloaded from http://ati.amd.com
The monitor is Hanns-G HH251 (25", 1920x1080@60 max) I cannot make either "Display Settings" or "ATI Configuration" to show the refresh rate of 60 Hz as available. When I change the resolution to 1440x900 then I can pick 60 (but obviously I don't want that resolution). However, if I pick 1920x1080, the only two refresh rates available are 25 and 30 Hz, causing the image to flicker and whatnot.
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Aug 29, 2010
Just got a spare computer running ubuntu. The monitor it has atm has a problem where the screen goes crazy,the colours flicker and there are lines all over. I'm pretty sure its the refresh rate as the monitor can only support 55hz and 60hz. However, Xserver wont allow me to go below 75hz.Specs (very low I know ;D)nVidia 7600GS
AMD 32002 gig ramAMW M199D
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Feb 22, 2011
Iam facing difficulty with smaller text size in the latest release 10.10(owing to default Screen Resolution of 1440X900{16:10}).
Surprisingly, Iam not able to choose any other 'Resolution' & 'Refresh Rate'from the corresponding drop-down menus!?(Click on the drop-downs do not provoke any action!?)
Default 'Refresh Rate' is also set to 0Hz.'Rotation' as well is fixed to NORMAL only?
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Jun 3, 2011
every since I installed natty in march my refresh rate has been wrong this makes it where I can not see the boot screen, this was not a big problem until I installed the developmental version of ubuntu to test for bugs and I can not see the boot screen, I went to the page that tells how to change the rate but I get this error when I ran xrandr Failed to get size of gamma for output default. This showing my monitor as default it does not show a name, I manually set it up in x server and it shows the correct rate and the correct monitor, but not in monitor preferences.
[URL]
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Jun 5, 2011
I just built a home media server. It's using a Gigabyte E350N-USB3 motherboard with the AMD Fusion processor. So far, everything seems to be working fair enough. However, when it comes to video playback via an HDMI cable to my TV, it's unwatchable. It is okay during slow scenes, but any sudden movement or high action scenes and the problem becomes obvious.I don't know how to explain it other than it appears to have a problem refreshing quickly enough. I see horizontal lines across the film. I originally thought it might be due to low quality AVI files, but I just tried a DVD and it did it just the same.
I'm pretty knew to Ubuntu, so I'm not sure if there are some settings I can tweak, or if I am missing some drivers. Any ideas on where to start?
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Jan 12, 2010
i am still new with linux and debian i have some issues setting up a correct refresh rate on my monitor i want a 75hz or 80hz however i can only get 60hz a also get some weird frequencies like 59 , 61hz on the screen resolution tool via the gnome dockbar here is my xorg.conf
# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
[Code]...
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Oct 6, 2015
I have three monitors, two Dells and an older LG all native at 1920x1080@60Hz and only recently installed Debian on this setup.
The LG is detected as running at 59.93Hz instead of 60Hz and this discrepancy appears to drive up the temperatures in my GPU constantly, even on idle, and introduces severe stuttering in any kind of graphical application.
I had the exact same issue with Windows 7 as well, but was able to fix it by changing the display settings of said monitor to 60Hz refresh, thereby returning the idle temps to normal and removing the stuttering.
My problem now is that I can't seem to change the refresh rate of this screen at all under debian.
xrandr -q returns that the monitor is running at 59.93Hz, but also shows 60Hz as available.
xrandr --output DVI-I-1 --rate 60
appears to have absolutely no effect, it doesn't error but it also doesn't change the refresh rate.
Trying to add a new mode with 60hz and modeline obtained from cvt results in the following:
Code: Select allxrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr --addmode DVI-I-1 "1920x1080_60.00"X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 18 (RRAddOutputMode)
Serial number of failed request: 41
Current serial number in output stream: 42
I've also tried to set the refresh rate through the proprietary nvidia driver and manually through xorg.conf, both to no effect;
Here's my current xorg.conf:
Code: Select allSection "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection
[Code] ....
The driver settings will show 60Hz but the listing for the monitor in the driver and xrandr will still show 59.93Hz. Saving the settings of nvidia-settings to .nvidia-settings-rc was equally fruitless.
The settings on the monitor itself also show it running at 60Hz, without an option to go down to 59.93Hz so I got no clue where that is even coming from.
What else to try, besides buying a new monitor, which I'm not quite prepared to do yet.
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