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View Full Version : [xfce] Why can't I get a better refresh rate than 75 hz?



abben
April 30th, 2009, 05:28 AM
Fresh off of a reinstall, the first thing I noticed is that, I think, the screen is more painful to look at than it used to be.

Another thing I noticed is that, whenever I do


sudo dpkg-reconfigure xserver-xorg, it configures nothing other than my keyboard. And in the xorg.conf file, it gives a generic "Configured Monitor" entry that is totally empty.

So I manually edited xorg.conf to include...


Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
HorizSync 30-97
VertRefresh 50-180
EndSection

Section "Screen"
Identifier "Generic Monitor"
Monitor "ViewSonic G810"
DefaultDepth 16

Subsection "Display"
Depth 16
Modes "1280x1024" "1024x768" "800x600"
ViewPort 0 0
EndSubsection

Subsection "Display"
Depth 24
Modes "1600x1200" "1400x1050" "1280x1024" "1024x768" "800x600"
ViewPort 0 0
EndSubsection
EndSection

And, when I run xrandr, it gives me these choices:


Screen 0: minimum 320 x 240, current 1280 x 1024, maximum 1280 x 1024
default connected 1280x1024+0+0 0mm x 0mm
1280x1024 75.0* 60.0
1024x768 75.0 70.0 60.0
800x600 75.0 72.0 70.0 65.0 60.0
1280x960 60.0
1280x800 60.0
1152x870 75.0
1152x864 75.0
1280x768 60.0
928x696 60.0
896x672 60.0
960x600 60.0
832x624 75.0
840x525 60.0
700x525 75.0 70.0 60.0
640x512 75.0 60.0
720x450 60.0
640x480 75.0 60.0 59.0 73.0
640x400 60.0
576x432 75.0
640x384 60.0
512x384 75.0 70.0 60.0
416x312 75.0
400x300 75.0 72.0 60.0
320x240 75.0 73.0 60.0


Why on earth is my max refresh rate 75 hz, when I clearly specified higher thresholds in xorg.conf?

Thanks for any help.

Wiebelhaus
April 30th, 2009, 05:40 AM
Watching thread...

abben
April 30th, 2009, 05:50 AM
shameless bump

Wiebelhaus
April 30th, 2009, 05:53 AM
shameless bump

Someone's gonna yell at ya about that , A while back they started asking folks not to bump but every 24 hours , they have an "Unanswered post team" that starts at the back of the heap and work their way back.

abben
May 2nd, 2009, 09:31 AM
After much perusing of the internets I remain in the same situation. Would appreciate any advice.

overdrank
May 2nd, 2009, 09:56 AM
After much perusing of the internets I remain in the same situation. Would appreciate any advice.

Ok I am no expert but, fresh reinstall of Ubuntu. What version?
Edit I see xfce, 8.10 or 9.04 is what I am asking.
What is the model of the graphics card?
Have you tried the xfix option when booting into recovery mode?

abben
May 3rd, 2009, 09:05 AM
Ok I am no expert but, fresh reinstall of Ubuntu. What version?
Edit I see xfce, 8.10 or 9.04 is what I am asking.
What is the model of the graphics card?
Have you tried the xfix option when booting into recovery mode?

Thank you for the response, overdrank.

I just installed Xubuntu 8.10
The model of the graphics card in Nvidia RIVA TNT2 (http://en.wikipedia.org/wiki/RIVA_TNT2) (pretty old, but it shows up when I "lspci -v")
And, yes, I did try the xfix option. Unfortunately it didn't appear to change anything. My xorg.conf got re-written to the same generic one that's produced by a dpkg-reconfigure xserver-xorg.

To be clear, my only objective is to increase the refesh rate of my monitor, so I don't have to tear up when I'm looking at the screen. Any trick whatsoever that might help me do this would be awesome.

Can I, for instance, just force-feed a preferred refresh rate in the modeline of my xorg.conf file?

overdrank
May 3rd, 2009, 09:30 AM
Hi and I have seen many issues with the Nvidia RIVA TNT2 graphics with intrepid. I have no experience with that graphics but have seen where some users have added Hardy repos to the sources list to install displayconfig-gtk that has help. Sorry I could not help any more.

mister_pink
May 3rd, 2009, 09:38 AM
Are you 100% sure your hardware is capable of higher refresh rates? I know my screen won't let me go higher than that.

abben
May 3rd, 2009, 10:14 AM
Hi and I have seen many issues with the Nvidia RIVA TNT2 graphics with intrepid. I have no experience with that graphics but have seen where some users have added Hardy repos to the sources list to install displayconfig-gtk that has help. Sorry I could not help any more.

I appreciate you taking the time to offer a suggestion. I did try display-config-gtk, but I met with dependency issues. When I --force-depends it, it installed, but wouldn't run.

However I was able fix the problem, thanks to the this wiki page (https://wiki.ubuntu.com/X/Config/Resolution). Apparently, we aren't supposed to actually use dpkg-reconfigure xserver-xorg for screen resolutions anymore.

CatKiller
May 3rd, 2009, 12:44 PM
Why on earth is my max refresh rate 75 hz, when I clearly specified higher thresholds in xorg.conf?

Video bandwidth. number of pixels refresh rate = bandwidth. If your monitor can't handle that bandwidth then you either need to decrease the refresh rate or the number of pixels. I'm not entirely sure why you imagined that an affordable monitor would be able to do 180 Hz at a large resolution.

As far as I can tell, the maximum refresh rate for that monitor at 12801024 is 85Hz.

Zoowey
May 3rd, 2009, 12:48 PM
Well my 1280x1024 19" LCD has a refresh rate of 60Hz so I don't think yours can go up much higher. If you force the Hz's higher then what the monitor supports you'll end up damaging it.

blackened
May 3rd, 2009, 01:01 PM
This isn't an LCD we're talking about. According to Tom's Hardware, it should be capable of much high refresh rates.
http://www.tomshardware.com/reviews/comparison,497-10.html

112261


I appreciate you taking the time to offer a suggestion. I did try display-config-gtk, but I met with dependency issues. When I --force-depends it, it installed, but wouldn't run.

However I was able fix the problem, thanks to the this wiki page (https://wiki.ubuntu.com/X/Config/Resolution). Apparently, we aren't supposed to actually use dpkg-reconfigure xserver-xorg for screen resolutions anymore.

Funny, that's my favourite go-to link for display issues, and just happens to be the direction I was gonna head you in. Glad you got it sorted out.

HappySmack
May 4th, 2009, 08:41 AM
A couple of hours ago I lost my max resolution capability. I have a Nvidia TNT2 model 64 32meg. I just installed Opera and when I closed it, my resolution went to 800x600. I have tried installing Nvidia site drivers (NVIDIA-Linux-x86-71.86.09-pkg1), repo drivers, Envy's setup and some others. Nothing is getting me back to 'at least 1024x768'. I have attempted the procedure as noted earlier at : https://wiki.ubuntu.com/X/Config/Resolution . Still nothing.

I am running Jaunty fresh install,NVIDIA RIVA TNT2 Model 64,HP Pavillion m70 monitor, 1.5 gig AMD, 1.25 gig ram and, ext4 filesystem. And currently all other drivers are uninstalled but the ones from Nvidia site (NVIDIA-Linux-x86-71.86.09-pkg1). I know that I can achieve higher resolution than this, I have had no problems with 8.10 and a resolution of up to 1280x???. If someone has this card and wants to post their xorg.conf , that would be most appreciated. Any help is appreciated.

blackened
May 5th, 2009, 12:55 AM
A couple of hours ago I lost my max resolution capability. I have a Nvidia TNT2 model 64 32meg. I just installed Opera and when I closed it, my resolution went to 800x600. I have tried installing Nvidia site drivers (NVIDIA-Linux-x86-71.86.09-pkg1), repo drivers, Envy's setup and some others. Nothing is getting me back to 'at least 1024x768'. I have attempted the procedure as noted earlier at : https://wiki.ubuntu.com/X/Config/Resolution . Still nothing.

I am running Jaunty fresh install,NVIDIA RIVA TNT2 Model 64,HP Pavillion m70 monitor, 1.5 gig AMD, 1.25 gig ram and, ext4 filesystem. And currently all other drivers are uninstalled but the ones from Nvidia site (NVIDIA-Linux-x86-71.86.09-pkg1). I know that I can achieve higher resolution than this, I have had no problems with 8.10 and a resolution of up to 1280x???. If someone has this card and wants to post their xorg.conf , that would be most appreciated. Any help is appreciated.

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