At 11:32 PM +0200 6/25/01, leif wrote:
Michael Blakeley wrote:
In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] (leif) wrote:
Are you sure you have/had the dual scan version of the 2400c?
There were one version at 180mhz and another at 240 mhz. Probably
the 180mhz is with dual scan.
Let's make sure that we're using 'dual-scan' to mean the same
thing. My 2400/180c has a 'dual-scan' video mode, which means that
it displays the same video on the LCD and on an external monitor.
My PB has the same feature, but no, this is not what I was referring
to. Here is a description of dual-scan displays:
<http://til.info.apple.com/techinfo.nsf/artnum/n24295>
and I quote: "The dual-scan color passive-matrix display actually
consists of two displays butted up against each other." I.E. it is a
special kind of LCD technology. It was (is) a cheap color LCD
display compared to the actice matrix displays which now (I think)
prevails.
Ah - a dual-scan passive-matrix LCD. I haven't touched one in years:
the 1400 was the last shipping powerbook with that display, wasn't it?
Good, now I understand you. But what makes you so sure that your 2400
has a passive display? The tech note you refer to doesn't mention the
2400, and AFAIK the 2400c was always active matrix, for /180 or /240
models. I've been subscribed to the DuoList
<http://lists.themacintoshguy.com/Lists/DuoList/List.html> and been
working with 2400s since they first started shipping, so I'd expect
to have heard about it....
Some 2300c units had passive displays. Maybe you're running one of
those? Maybe a 1400?
I haven't ever used it in Linux with dual-scan enabled,
You should call this 'duplication of the screen image on an external
monitor' or something.
Personally, I call it "mirroring" (or display mirroring). But Apple's
Control Strip module for 8.6 calls it simulscan, and I thought you
might be thinking of that feature, so I adopted your nomenclature.
Mentioning "passive matrix" would have tipped me off (or maybe you
did, and I didn't notice).
but I've run Linux with both displays (LCD and external VGA) at
different times.
My attemt to install showed that there were no problems having
screen image duplication. The fact that the installer stopped when
coming to X-install (I'm now talking about my YDL2.0-attemt), must
have been because the intaller was in doubt about which
monitor/display to take into account or for other reasons having
become comfused by the duplicated view. Or - most likely - for
having trouble with my dual scan passive matrix display.
I thought we were talking about debian? I've never tried a YDL
install on the 2400. I dislike x-based installers, since they always
seem to cause problems like this.
Anyway, if your chipset is the CT6550, like all 2400's that I've
seen, then the debian potato kernel should work with it.
-- Mike
