Re: Monitor Squeal

From: Murphy (m_at_urphy.com)
Date: 01/02/05 

Date: Sun, 02 Jan 2005 22:27:23 GMT

Floyd L. Davidson wrote:

> Murphy <m@urphy.com> wrote:
>>Steve Martin wrote:
>>
>>> Murphy wrote:
>>>
>>>>>>How can I have Linux run this monitor at 75Hz as the noise is too
>>>>>>annoying to use the machine under Linux.
>>>
>>>> I understand that X11 relates to the GUI however my monitor squeal s in
>>>> Linux at the command line before KDE is even started...
>>>
>>> Modern monitors use switching power supplies which emit such
>>> a squealing sound when one or more components in the PS start
>>> to degrade. This usually is an indication of a failing monitor.
>>
>>Maybe so but it has worked perfectly until now with Windows and still
>>works perfectly when I run Windows, the only problems are encountered when
>>I run Linux.
>
> WRONG.
>
> It has *nothing* to do with which OS you run.
>
> The solution has been give to you several times now... don't
> configure your system to us 60 Hz vertical refresh.
>

Floyd, I agree it has nothing to do with the OS but the fact remains that
under Linux the problem exists and under Windows it doesn't, and in a dual
boot scenario this can be tested conclusively in under 5 minutes.

I would love to configure the system not to use the 60Hz vert refresh rate
however being a total newbie it takes time to figure it out and from
experience best not to screw with things unless you A) know what you're
doing and B) have researched sufficiently to be confident that the change
is the correct one. My questions here are part of that research and I
grealy appreciate all the assistance provided to date.

I now have now update lilo.conf to be vga=normal and at the command prompt
upon boot the squeal has gone.

I have also located the xorg.conf file and am reading through it. What
puzzels me is why in KDE only a refresh rate of 60Hz is listed in the drop
down box that obviously is made to list various options, if I had the
correct drivers installed surely I would have the correct options listed in
this drop down list ? (as I have in Windows)

Does KDE display the values in the "Screen Resize and Rotate" refresh rate
list box dependant upon the drivers installed or is it simply read from the
xorg.conf file ? and if the latter then surely this is anything but plug n
play hardware detection. 

-- 
Thanks
Murph

Relevant Pages

  • Re: Posting 60 messages per second to CView locks up UI (animation continues...)
    ... One was on a 4 year old laptop running 32-bit XP Pro and the other one was ... a new 64-bit Windows 7 desktop. ... down to 14ms timer interval without locking up UI. ... refresh rate available on the laptop. ...
    (microsoft.public.vc.mfc)
  • Re: Newbie needs gentle help with video
    ... > earning a good living supporting Windows, ... This requires that you initially setup SaX2 to to highest ... possible resolution you wish to use. ... When you set your video up in SaX2, remember to adjust your refresh rate by ...
    (alt.os.linux.suse)
  • RE: wont always recognize mouse, save refresh rate --XP
    ... SP3 has additional updates to it,have you been to microsoft update ... My refresh rate is not saved. ... It would keep the Windows Classic display, ... and I have not updated the driver because the ...
    (microsoft.public.windowsxp.accessibility)
  • wont always recognize mouse, save refresh rate --XP
    ... Have just reinstalled Windows XP. ... Then I began installing the updates after ... My refresh rate is not saved. ...
    (microsoft.public.windowsxp.accessibility)
  • further update: Synchronizing OnPaint to vsync
    ... It seems the problem was using powerstrip - a refresh rate tool ... therefore the directx was waiting for the next vsync as if it was a 60hz ... I now managed to fool it by making windows think its 70hz not 60, ... even with my timing prediction wich took into acount the drawing time it ...
    (microsoft.public.dotnet.languages.csharp)