Where does hwinfo --monitor take the information "Size: 330x210 mm" from?
(It is wrong. I have measured the correct value. The correct value is
331x207mm².)
(Laptop computer MD97600 using a built-in LCD.)
"~$ sudo ddcprobe; ...; screensize: 33 21; ..." outputs the same false
data.

--
GNU/Linux MD97600 2.6.20-16 generic #2 SMP Jun 7 2007 i686
Ubuntu 7.04, GNOME 2.18.0, Epiphany 2.18.0, Evolution 2.10.0
Irssi, OpenOffice.org 2.2, WinXP MCE 2005
Medion MD97600

On Wed, 23 Jul 2008 09:39:29 +0000 (UTC), Detlef Lechner <Detlef.Lechner@gmx.net> wrote:

>Where does hwinfo --monitor take the information "Size: 330x210 mm" from?
>(It is wrong. I have measured the correct value. The correct value is
>331x207mm².)

Close enough :)

Grant.
--
http://bugsplatter.mine.nu/

Am Wed, 23 Jul 2008 19:56:21 +1000 schrieb Grant:

> Close enough :)
>
> Grant.

Not close enough. Wrong. Letters are blurred, for example.

Detlef
--
GNU/Linux MD97600 2.6.20-16 generic #2 SMP Jun 7 2007 i686
Ubuntu 7.04, GNOME 2.18.0, Epiphany 2.18.0, Evolution 2.10.0
Irssi, OpenOffice.org 2.2, WinXP MCE 2005
Medion MD97600

On Wed, 23 Jul 2008 10:39:39 +0000 (UTC), Detlef Lechner <Detlef.Lechner@gmx.net> wrote:

>Am Wed, 23 Jul 2008 19:56:21 +1000 schrieb Grant:
>
>> Close enough :)
>>
>> Grant.
>
>Not close enough. Wrong. Letters are blurred, for example.

You set a monitor up to match the number of pixels, not the physical
size, then look at sub-pixel anti-aliasing the fonts for LCDs. The
'96dpi' for example was always a rough estimate, considered equivalent
to 100dpi. A few percent error in physical size does not make for
blurred text, setting the wrong number of pixels will. It's that simple.

Grant.
--
http://bugsplatter.mine.nu/

Detlef Lechner schrieb:
> Where does hwinfo --monitor take the information "Size: 330x210 mm" from?

From the EDID. It's a data set that is communicated between computer and
monitor over DVI or VGA. It contains, in addition to the frequency and
sync requirements and the display resolution also the physical size of
the display.

> (It is wrong. I have measured the correct value. The correct value is
> 331x207mm².)

Which is very close, you should be fine with it.

So long,
Thomas