how to ignore monitor's EDID?

David Greaves david at
Sun Dec 28 07:47:41 PST 2008

Tomasz Chmielewski wrote:
> Tomasz Chmielewski schrieb:
>> Right, have it in man radeon as well.
>> The only side effect is that now KDE4's panel has a 1024 px width when
>> the session loads, even though the desktop starts with 1280 px width -
>> and I have to resize it each time.
>> But I guess that's a question for KDE's mailing list...
> Well, it is somehow related to the X configuration...
> With the configuration below, X starts in 1024x768 instead of 1280x1024
> - why (then, KDE switches to 1280x1024, but the panel stays at 1024 px)?

Can you pastebin the full log and the full config.

> I even added:
>     Option "PanelSize" "1280x1024"
> but it doesn't make any difference - X starts in 1024x768.
> So - how can I start X in 1280x1024 when I use "IgnoreEDID"    "on" option?

Did you keep this line?
modeline        "1280x1024 at lcd" 108 1280 1326 1440 1688 1024 1025 1028 1066

AFAIK EDID tells the card about supported modes and timings. Without it you need
a manual modeline.


"Don't worry, you'll be fine; I saw it work in a cartoon once..."

More information about the xorg mailing list