Problems with Screen Resolution

[Felix Miata]

On 2011/01/31 16:10 (GMT) Wilson, Richard composed:

> First, my apologies, this is only partially a KDE issue, but I am hopeful that one of you can help me with this.

xorg at freedesktop.org or the fedora users list would be better for follow up 
as the root of your problem has nothing to do with KDE.

> I have just upgraded my workstation from Fedora 12 to Fedora 14 and am now running KDE 4.5.5-1.

> My Flat Panel monitor supports a native mode of 1280x1024 and this is what I have historically run it at under previous versions of Fedora.  When I upgraded to Fedora 12, I had similar problems getting the resolution to 1280x1024, I had to use system-config-display and create an xorg.conf file and add nomodeset to my kernel boot line in grub to get it to work.

> Fedora 14 has deprecated system-config-display; if I add nomodeset to the kernel line, I don't get a login screen and everything I've tried so far has not worked -- at least I have 1024x768 resolution -- with Fedora 12 it defaulted to 800x600.

There is no more nomodeset option for Intel video users.

> Section "ServerLayout"
> Section "Files"
> Section "InputDevice"

Delete all above sections. They have nothing to do with your problem. 
Automatic works for them for most people.

> Section "Module"
> 	Load  "record"
> 	Load  "glx"
> 	Load  "dri2"
> 	Load  "dri"
> 	Load  "extmod"
> 	Load  "dbe"
> EndSection

The above section is probably no longer necessary. Depends on which chip you 
have maybe.

> Section "Monitor"
> 	Identifier	"Monitor0"
> 	VendorName	"Compaq"
> 	ModelName	"LCD Panel 1280x1024"
> 	HorizSync	31.5 - 64.0
> 	VertRefresh	56.0 - 65.0
> 	Option		"dpms"
> EndSection

Try adding to above section 'Option "PreferredMode" "1280x1024"

> Section "Device"
>          ### Available Driver options are:-
>          ### Values:<i>: integer,<f>: float,<bool>: "True"/"False",
>          ###<string>: "String",<freq>: "<f>  Hz/kHz/MHz",
>          ###<percent>: "<f>%"
>          ### [arg]: arg optional
>          #Option     "NoAccel"            	# [<bool>]
>          #Option     "SWcursor"           	# [<bool>]
>          #Option     "ColorKey"           	#<i>
>          #Option     "CacheLines"         	#<i>
>          #Option     "Dac6Bit"            	# [<bool>]
>          #Option     "DRI"                	# [<bool>]
>          #Option     "NoDDC"              	# [<bool>]
>          #Option     "ShowCache"          	# [<bool>]
>          #Option     "XvMCSurfaces"       	#<i>
>          #Option     "PageFlip"           	# [<bool>]
> 	Identifier  "Videocard0"
> 	Driver      "intel"
> 	BusID       "PCI:0:2:0"
> EndSection

You can see most of those are commented away. Uncommenting NoDDC might have 
an impact. BusID is probably not needed.

Be sure on follow up to tell exactly which Intel chip is reported by lspci.

> Section "Screen"

AFAICT, this whole section is obsolete for Intel chips, but may be useful for 
some older chips like MGA.

> 	Identifier "Screen0"
> 	Device     "Videoard0"
> 	Monitor    "Monitor0"
> 	DefaultDepth	24
> 	SubSection "Display"
> 		Viewport   0 0
> 		Depth     1
> 		Modes	"1280x1024" "1024x768" "800x600" "640x480"
> 	EndSubSection
> 	SubSection "Display"
> 		Viewport   0 0
> 		Depth     4
> 		Modes	"1280x1024" "1024x768" "800x600" "640x480"
> 	EndSubSection
> 	SubSection "Display"
> 		Viewport   0 0
> 		Depth     8
> 		Modes	"1280x1024" "1024x768" "800x600" "640x480"
> 	EndSubSection
> 	SubSection "Display"
> 		Viewport   0 0
> 		Depth     15
> 		Modes	"1280x1024" "1024x768" "800x600" "640x480"
> 	EndSubSection
> 	SubSection "Display"
> 		Viewport   0 0
> 		Depth     16
> 		Modes	"1280x1024" "1024x768" "800x600" "640x480"
> 	EndSubSection
> 	SubSection "Display"
> 		Viewport   0 0
> 		Depth     24
> 		Modes	"1280x1024" "1024x768" "800x600" "640x480"
> 	EndSubSection
> EndSection

Fedora 14 maybe impacted by 
https://bugs.freedesktop.org/show_bug.cgi?id=32430 unfixed but in need of 
fix, meaning you may need to move your configs into /etc/X11/xorg.conf.d/ for 
them to work. You may want to search bugzilla.redhat.com first for a bug 
referencing 32430.

If none of the above helps, adding xrandr commands to /etc/X11/xinit/xinitrc 
may be your solution.

http://fm.no-ip.com/Share/DisplaySize may or may not be useful in your case.
-- 
"How much better to get wisdom than gold, to choose
understanding rather than silver." Proverbs 16:16 NKJV

  Team OS/2 ** Reg. Linux User #211409

Felix Miata  ***  http://fm.no-ip.com/
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