Hi!
Here is a way to fix the problem:
1. Edit 'xorg.conf' (most probably '/etc/X11/xorg.conf').
2. Check Section "Monitor".
(If the fields 'HorizSync' and 'VertRefresh' are not present - which, by
default, they are not - you can add them manually.)
Try:
- DECREASING the MAXIMUM value of HorizSync.
- INCREASING the MINIMUM value of VertRefresh.
Explanation:
- By dropping the maximum value of HorizSync, we will restrict the maximum
supported resolution. Xorg will drop down to a lower resolution.
- By raising the minimum value of VertRefresh, Xorg will find that the default
too-high resolution is impossible at our specified minimum refresh rate. Xorg
will drop down to a lower resolution.
By tweaking both HorizSync and VertRefresh independently of each other,
you should be able to get your preferred resolution and refresh rate
with a little trial-and-error.
p.s.
Regarding this section:
Section "Screen"
SubSection "Display"
Any modes (resolutions) specified here do not seem to have any effect.
Only the DefaultDepth option works - this might be useful in case you wish to
use a non-default color depth (e.g. 16-bit).
p.p.s.
Hope this helps!
Any questions are most welcome.
--
xorg intel driver: chosing too high frequency
https://bugs.launchpad.net/bugs/117319
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