LG W2452T 1920x1200 Monitor & OS4.1 (Solved)

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Swoop

Posted on: 2009/3/1 18:16 #1

Quite a regular

I have just got the above monitor, and have set the following in the radeon tooltypes:-
Quote:

CMPLENGTH=6
BOARDNAME=Radeon
VSYNCMIN=60
VSYNCMAX=70
HSYNCMIN=31000
HSYNCMAX=70000
MODE=640x480@60
MODE=720x480@60
MODE=800x600@60
MODE=1024x768@60
MODE=1152x864@60
MODE=1280x1024@60
MODE=1600x1200@60
MODE=1680x1050@60
MODE=1920x1200@60
(FAKENATIVEMODES=Yes)
INTERRUPT=Yes

It is a 24" widescreen monitor, with a tp resolution of 1920x1200.

The problem is that I cannot get the 1920x1200 screen mode.
It is not shown in screen mode prefs no matter what I do.
The highest mode I can use is 1680x1050.
I have even deleted some tooltypes to see if there was a limit on the maximum number of modes allowed.

Does anyone have any ideas.

Edited by Swoop on 2009/3/2 3:23:43

Peter Swallow

Eyetech A1XE-G3 800Mhz OS4.1
Towered A1200 OS3.9

Snuffy

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 18:36 #2

Just can't stay away

Hi @Swoop
Does anyone have any ideas.
Nope. I tried to see if there where any Sapphire driver specs, but zeroed out...
http://www.sapphiretech.com/us/search/search.php

Swoop

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 19:00 #3

Quite a regular

@Swoop

I have a radeon 9200se in my A1 at the moment.

Peter Swallow

Eyetech A1XE-G3 800Mhz OS4.1
Towered A1200 OS3.9

Swoop

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 19:15 #4

Quite a regular

Looking for the 9200SE specs, I see from This site that the refresh rate for 1920x1200 resolution is 100mhz.
The monitors manual says it supports this res at 60mhz.

Any clues anyone.

Edited by Rigo on 2009/3/1 19:55:02

Peter Swallow

Eyetech A1XE-G3 800Mhz OS4.1
Towered A1200 OS3.9

Snuffy

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 19:29 #5

Just can't stay away

Hi @Swoop

Any clues anyone.
The big foot note! :
16:9 aspect ratio monitors are supported on 1920x1080 and 848x480 on Microsoft? Windows? XP, Microsoft? Windows? 2000 and Microsoft? Windows? Me. The complete list of resolutions depends on the driver version and operating system. NOTE: resolutions are limited by the performance of the attached monitor. DVI-I monitors will be limited to 1600x1200.

http://ati.amd.com/products/radeon9200/radeon9200/specs.html

The LG website says:
CERTIFIED FOR WINDOWS VISTA?
This FLATRON monitor is Certified for Windows Vista and complements the new look of the innovative operating system.

Sorry no no mention of Amiga OS4.1 certification!!!

Edited by Snuffy on 2009/3/1 19:46:19

hotrod

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 19:31 #6

Not too shy to talk

@Swoop

That is the maximum refresh rate. It supports lower than 100Hz as well.

ZeroG

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 19:44 #7

Not too shy to talk

@Swoop
That does work here:
MODE=1920x1200@60+RB

Snuffy

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 19:48 #8

Just can't stay away

Hi @ZeroG
That does work here:
What does all that 'RB' mean?

Rigo

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 19:56 #9

Supreme Council

@Snuffy

It specifies that "Reduced Blanking" should be used. This helps considerably with TFT monitors.

You can also try -RB as well.

Simon

Gazelle

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/1 23:02 #10

Just popping in

@Swoop

According to this: http://us.lge.com/download/product/fi ... 020/W2452T_spec_sheet.pdf

You should set:

VSYNCMIN=56
VSYNCMAX=75
HSYNCMIN=30000
HSYNCMAX=83000

You have set HSYNCMAX=70000 but 1200*60=72000 (bare minimum without sync signals) so OS4 thinks your Monitor is not capable for the resolution and will not display it.

According to the VESA COORDINATED VIDEO TIMING:


HOR PIXELS              1.920   PIXELS

VER PIXELS              1.200   LINES

HOR FREQUENCY           74,556  kHz

ACTUAL VER FREQUENCY    59,885  Hz

PIXEL CLOCK             193,250 MHz

Reduced Blanking:


HOR PIXELS              1.920   PIXELS

VER PIXELS              1.200   LINES

HOR FREQUENCY           74,038  kHz

ACTUAL VER FREQUENCY    59,950  Hz

PIXEL CLOCK             154,000 MHz

Swoop

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/2 3:15 #11

Quite a regular

@Gazelle

Quote:

According to this: http://us.lge.com/download/product/fi ... 020/W2452T_spec_sheet.pdf

You should set:

VSYNCMIN=56
VSYNCMAX=75
HSYNCMIN=30000
HSYNCMAX=83000

You have set HSYNCMAX=70000 but 1200*60=72000 (bare minimum without sync signals) so OS4 thinks your Monitor is not capable for the resolution and will not display it.

Thanks for that. Using those settings 1920x1200 shows in screenmode prefs, but I get a 4:3 screen rather than 16:10.

Peter Swallow

Eyetech A1XE-G3 800Mhz OS4.1
Towered A1200 OS3.9

Swoop

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/2 3:23 #12

Quite a regular

@ZeroG

Quote:

That does work here:
MODE=1920x1200@60+RB

Thanks, after applying Bernd's changes to my min/max sync tooltypes, using "+RB" solved the 4:3 problem.

Thanks to all that got involved, problem solved.

Peter Swallow

Eyetech A1XE-G3 800Mhz OS4.1
Towered A1200 OS3.9

Jack

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/2 14:46 #13

Quite a regular

@Swoop

Quote:

Swoop wrote:
Looking for the 9200SE specs, I see from This site that the refresh rate for 1920x1200 resolution is 100mhz.
The monitors manual says it supports this res at 60mhz.

Any clues anyone.

100MHz is the maximum resolution, I'm sure it can go as low as 60 at the same res. As you see the higher the resolution , the lower is the max. refresh rate. It is relevant to CRT displays only.

Anyway, good to see that all's well.
Enjoy the real estate on your desk

"the expression, 'atonal music,' is most unfortunate--it is on a par with calling flying 'the art of not falling,' or swimming 'the art of not drowning.'. A. Schoenberg

Swoop

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/22 12:09 #14

Quite a regular

@Thread

Does anyone have any OS4/4.1 1900x1200 backdrops.
The largest I have is 1600x1200.

Peter Swallow

Eyetech A1XE-G3 800Mhz OS4.1
Towered A1200 OS3.9

ZeroG

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/22 12:41 #15

Not too shy to talk

@Swoop

There should be two OS4.1 1920x1200 Backdrops in SYS:Prefs/Presets/Patterns/OS4.1 Backdrops TFT Resolutions

Swoop

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/22 16:15 #16

Quite a regular

@ZeroG

Quote:

There should be two OS4.1 1920x1200 Backdrops in SYS:Prefs/Presets/Patterns/OS4.1 Backdrops TFT Resolutions

Thanks for that. I was looking in Prefs/Presets/Default.

Peter Swallow

Eyetech A1XE-G3 800Mhz OS4.1
Towered A1200 OS3.9

TSK

Re: LG W2452T Monitor & OS4.1

Posted on: 2009/3/22 16:32 #17

Just can't stay away

@Swoop

Well you asked OS4 wallpapers but here's one of the best wallpaper websites and this one.

Rock lobster bit me - so I'm here forever
X1000 + AmigaOS 4.1 FE
"Anyone can build a fast CPU. The trick is to build a fast system." - Seymour Cray

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