Ubuntu
xorg package

refresh rate list in error, gnome settings (7.04)

Bug #119002 reported by Galen Thurber on 2007-06-06

This bug report is a duplicate of: Bug #92599: Incorrect (low/stuttering) refresh rate with NVIDIA driver. Edit Remove

Affects		Status	Importance	Assigned to	Milestone
	xorg (Ubuntu)	Invalid	Undecided	Unassigned

Bug Description

ubuntu 7.04
gnome
gnome-settings
screen resolution
refresh rate is showing a list of incorrect values from 51 - 61 hertz
51 shown is actually 85hz

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Galen Thurber (godfree2) wrote on 2007-06-06:

bug-feisty-ubuntu-screenres-refresh.png Edit (19.8 KiB, image/png)

screen capture
so don't reply it works for me

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Adam Niedling (krychek) wrote on 2008-05-09:

There has been lots of improvement in the area in Hardy. Screen settings are far better now. Btw you should have specify the type of your screen at least.

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Galen Thurber (godfree2) wrote on 2008-05-10:

not fixed in 8.04
monitor has been specified, frequencies in xorg.conf
Option "DPMS"
...

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Adam Niedling (krychek) wrote on 2008-05-12:

You still didn't say what screen do you have. This report is meaningless without that information.

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Galen Thurber (godfree2) wrote on 2008-05-12:

example of bad refresh display listing Edit (17.9 KiB, image/png)

screen is CRT

Option "DPMS"
Driver "nvidia"

resolutions affected:
all
1024x768
1280x1024

Henrik S. (henrik-hw0) on 2008-06-02

Changed in xorg:
status:	New → Incomplete

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mbel (mbel) wrote on 2008-06-10: refresh rate list in error, gnome settings (8.04)

confirm this bug on ubuntu 8.04
videocard nVidia 7600GS by Gigabyte - nVidia drivers suggested by installer
monitor iiyama vision pro 454 (HM903DTB) 19"

suggested refresh rates by gnome at 1280x960 are 51 and 52
51 actually 85 Hz
52 actually 60 Hz
monitor support at this resolution refreshes up to 120 Hz

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mbel (mbel) wrote on 2008-06-10:

It looks like not a bug, but a "feature" of nVidia drivers. See more details at README for nVidia binary drivers, FAQ chapter, last but one question

Detection of this problem is simple: xrandr -q returns list of available refresh rates where all modes differs from each other by frequency

Solution is also simple: put string {
Option "DynamicTwinView" "false"
} inside Device section of /etc/X11/xorg.conf (of course without {} :) )
Maybe it's not the best way to solve problem, so can anybody suggest the better way?

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Chris Coulson (chrisccoulson) wrote on 2008-08-18:

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 92599, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.