Hactar a écrit :
> Is there anything that would take a mode(line) from xorg.conf (or
> wherever), let you modify it, and then test the results?

xrandr --output ... --mode ... ?

In article <47d46450$0$8910$426a74cc@news.free.fr>,
YBM wrote:
> Hactar a écrit :
> > Is there anything that would take a mode(line) from xorg.conf (or
> > wherever), let you modify it, and then test the results?
>
> xrandr --output ... --mode ... ?

I don't see --mode:

eben@pc:~$ xrandr --help
usage: xrandr [options]
where options are:
-display or -d
-help
-o
or --orientation
-q or --query
-s /x or --size /x
-r or --rate
-v or --version
-x (reflect in x)
-y (reflect in y)
--screen
--verbose
eben@pc:~$


--
-eben QebWenE01R@vTerYizUonI.nOetP royalty.mine.nu:81
Your pretended fear lest error might step in is like the man who
would keep all wine out of the country lest men should be drunk.
-- Oliver Cromwell

Hactar wrote:
>> xrandr --output ... --mode ... ?
>
> I don't see --mode:
>
> eben@pc:~$ xrandr --help
> usage: xrandr [options]
> where options are:
> -display or -d
> -help
> -o
> or --orientation
> -q or --query
> -s /x or --size /x
> -r or --rate
> -v or --version
> -x (reflect in x)
> -y (reflect in y)
> --screen
> --verbose

Interesting. I see:

splat$ xrandr --help
usage: xrandr [options]
where options are:
-display or -d
-help
-o
or --orientation
-q or --query
-s /x or --size /x
-r or --rate or --refresh
-v or --version
-x (reflect in x)
-y (reflect in y)
--screen
--verbose
--dryrun
--prop or --properties
--fb x
--fbmm x
--dpi /

--output

--auto
--mode
--preferred
--pos x
--rate or --refresh
--reflect normal,x,y,xy
--rotate normal,inverted,left,right
--left-of

--right-of

--above

--below

--same-as

--set
--off
--crtc
--newmode


[+HSync] [-HSync] [+VSync] [-VSync]
--rmmode
--addmode

--delmode

splat$ xrandr -v
Server reports RandR version 1.2
splat$

My box is running up to date Gentoo.

Cheers,
John McC

On Mon, 10 Mar 2008 16:20:46 +0000,
John McCallum , in
wrote:
>+ Hactar wrote:
>+ >> xrandr --output ... --mode ... ?
>+ >
>+ > I don't see --mode:
>+ >

>+ Interesting. I see:
>+
>+ splat$ xrandr --help
>+ usage: xrandr [options]

Perhaps it's time to run

$ xrandr --version
Server reports RandR version 1.2

on a Debian unstable box. Running --help, I get a return that looks
like the Gentoo output from John.

--
Consulting Minister for Consultants, DNRC
I can please only one person per day. Today is not your day. Tomorrow
isn't looking good, either.
I am BOFH. Resistance is futile. Your network will be assimilated.

In article ,
I R A Darth Aggie wrote:
> On Mon, 10 Mar 2008 16:20:46 +0000,
> John McCallum , in
> wrote:
> >+ Hactar wrote:
> >+ >> xrandr --output ... --mode ... ?
> >+ >
> >+ > I don't see --mode:
> >+ >
>
> >+ Interesting. I see:
> >+
> >+ splat$ xrandr --help
> >+ usage: xrandr [options]
>
> Perhaps it's time to run
>
> $ xrandr --version
> Server reports RandR version 1.2
>
> on a Debian unstable box. Running --help, I get a return that looks
> like the Gentoo output from John.

eben@pc:~$ xrandr --version
Xlib: extension "RANDR" missing on display ":0.0".

Hm, that'll have to wait. Can't exit X right now.

--
-eben QebWenE01R@vTerYizUonI.nOetP royalty.mine.nu:81

Drive nail here > < for new monitor.

ebenZEROONE@verizon.net (Hactar) writes:

> Is there anything that would take a mode(line) from xorg.conf (or
> wherever), let you modify it, and then test the results? xvidtune would
> work, except it says every mode it comes up with (even an unmodified
> one) is invalid. Two screens messes it up I guess. I'm having a devil
> of a time making 1200x900 work on my screen (LCD through analog
> connection). ISTR my CRT was easier to get along with...

With more recent versions of X (the last few years, that is), you
probably don't want to specify modelines (in the old sense) at all.
Have you tried something really simple like this?

Subsection "Display"
Depth 24
Modes "1200x900"
ViewPort 0 0
EndSubsection

In article <877iga4bnt.fsf@cenderis.demon.co.uk>,
Bruce Stephens wrote:
> ebenZEROONE@verizon.net (Hactar) writes:
>
> > Is there anything that would take a mode(line) from xorg.conf (or
> > wherever), let you modify it, and then test the results? xvidtune would
> > work, except it says every mode it comes up with (even an unmodified
> > one) is invalid. Two screens messes it up I guess. I'm having a devil
> > of a time making 1200x900 work on my screen (LCD through analog
> > connection). ISTR my CRT was easier to get along with...
>
> With more recent versions of X (the last few years, that is), you
> probably don't want to specify modelines (in the old sense) at all.
> Have you tried something really simple like this?
>
> Subsection "Display"
> Depth 24
> Modes "1200x900"
> ViewPort 0 0
> EndSubsection

IIRC the power consumed (= heat generated) by a transistor is
proportional to its clock speed squared. A CPU is in part a collection
of transistors. A GPU is a specialized CPU. I'm interested in
minimizing the heat generated by my video card so I can skimp on fans so
I can make the computer quieter. The dotclock in the default modeline
for 1600x1200 is over 160 MHz. As I can reduce the dotclock for
1200x900 to 100 MHz and still have it work (or for smaller values of
"work" I can reduce it to 80), I can probably get 1600x1200 down to 120
or less.

With that many things to change (pulse width, pulse start, maximum, all
in X and Y), doing it by modifying xorg.conf, restarting X, and seeing
what that did takes a long time.

It would probably _work_ your way, but it would be far from optimal.

--
-eben QebWenE01R@vTerYizUonI.nOetP http://royalty.mine.nu:81

"You're one of those condescending Unix computer users!"
"Here's a nickel, kid. Get yourself a better computer" - Dilbert