Problem with screen resolution in F8

[Tod Merley]

On Nov 21, 2007 7:00 PM,  <zephod at cfl.rr.com> wrote:
> The first time I logged in after installing F8, the background picture covered the entire screen but the top menu bar and bottom task bar only extended about 2/3 the width of the screen and the bottom task bar was not at the bottom of the screen but about 1/2 the way up.
>
> After playing with the screen resolutions, I have 1152x864 at 60Hz and the bars extend all the way across the screen and the task bar is at the bottom.
>
> I have 2 problems:
> 1) The 1st 1/2 inch of the screen is missing of the left side which, for some reason is really bugging me.
> 2) The resolution I really want is 1280x1024 at 75Hz. This is a dual boot machine at 1280x1024 at 75Hz is what I use in Windows
>
> Can anyone give me some ideas as to why I can't get my desired resolution?
>
> Below is some info from Xorg.0.log and /etc/X11/xorg.conf.
>
> Thanks,
> Steve
>
> I have an ATI Radeon X800 PCIE graphics card and a generic 20" LCD monitor.
>
> If I look in my Xorg.0.log file I see that the resolution I want is listed but then I see this line for output DVI-1:
>
> (II) RADEON(0): Not using default mode "1280x1024" (hsync out of range)
> (II) RADEON(0): Not using default mode "1280x1024" (vrefresh out of range)
> (II) RADEON(0): Not using default mode "1280x1024" (vrefresh out of range)
>
> and when it prints out the probed modes for DVI-1, 1280x1024 is not there. A similar thing happens for DVI-0 and this time the reasons given are:
>
> (II) RADEON(0): Not using default mode "1280x1024" (bad mode clock/interlace/doublescan)
> (II) RADEON(0): Not using default mode "1280x1024" (bad mode clock/interlace/doublescan)
> (II) RADEON(0): Not using default mode "1280x1024" (bad mode clock/interlace/doublescan)
>
> However, when the probed modes are printed this line shows up:
>
> (II) RADEON(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz)
>
> Near the bottom of the log, it says:
>
> (II) RADEON(0): Output DVI-1 using initial mode 1152x864
> (II) RADEON(0): Output DVI-0 using initial mode 1152x864
>
> My /etc/X11/xorg.conf has this in it:
>
> Section "Screen"
>         Identifier "Screen0"
>         Device     "Videocard0"
>         Monitor    "Monitor0"
>         DefaultDepth     24
>         SubSection "Display"
>                 Viewport   0 0
>                 Depth     24
>                 Modes    "1152x864" "1024x768" "800x600" "640x480"
>         EndSubSection
> EndSection
>
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Hi Steve.

1. Take down the model and serial number of your monitor - google for
the technical specifications - then see that the horizontal and
Vertical sync numbers set in the monitor section of /etc/X11/xorg.conf
are the ranges set forth in the specifications.

2. Check the horizontal and vertical position and size controls on the
monitor itself. Monitors will change somewhat in different modes and
some adjustment may be necessary.

3. If no joy also obtain the technical specifications on your video
card, and that you are using the best driver for your video card.

Sometimes you can use a live cd which will make a good xorg.conf and
find a good driver (see with "lsmod").

Good Hunting!

Tod