Re: default resolution on distro boot
On Mon, Jan 23, 2012 at 03:47:10PM -0700, mikezb@softhome.net wrote:
> Given that several Linux distros identify (on boot) my display brand
> and type, get the size only slightly wrong, but default to a
> resolution that isn't native and doesn't work correctly, how do I
> identify just what package, module, or kernel part this "bug" hides
> in?
> I'm using a Sharp 32" LCD tv via hdmi cable, and it's identified as a 37".
> That's not as important as the default resolution, which comes up as
> 1280x720, but should be 1360x768 (or 1024x768 if wxga isn't doable).
There is a functionality called "EDID" (Extended Display Identification
Data) which most display devices implement. Basically, one can ask the
display for what capabilities it has and then set the display to the
most suitable values.
To see what your display reports, try installing the "read-edid"
package, then run
$ $RUNASROOT get-edid | parse-edid | $PAGER
(where $RUNASROOT is whatever command you prefer to run 'get-edid' as
root. 'sudo', 'fakeroot', 'su -c' etc)
You should get a page of information telling you the manufacturer, model
etc of the display plus a list of modes it claims to support. It MAY BE
that native is not in that list (unlikely, but it has happened), in
which case you'll need to tell X to ignore it's autodetected resolution
and give it a modeline, just like in the old days :)
>
>
> --
> To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org with a
> subject of "unsubscribe". Trouble? Contact
> listmaster@lists.debian.org
> Archive: [🔎] courier.4F1DE36E.00001DFD@softhome.net">http://lists.debian.org/[🔎] courier.4F1DE36E.00001DFD@softhome.net
>
--
Darac Marjal
Reply to: