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Amiga computer related discussion => Amiga Desktop Audio and Video => Topic started by: apsturk on February 07, 2015, 01:53:37 AM

Title: Screen resolution
Post by: apsturk on February 07, 2015, 01:53:37 AM

Hello,
I have a X1000 with a Radeon HD 6670 card. A notification pop up to tell me for best results to set the resolution to 2560 x 1440. I have a 27' screen that is 2560 x 1440 but I do not see any sizes above 1920 x 1080. What do I do?

Title: Re: Screen resolution
Post by: Oldsmobile_Mike on February 07, 2015, 02:12:22 AM

Quote from: apsturk;783221

Hello,
I have a X1000 with a Radeon HD 6670 card. A notification pop up to tell me for best results to set the resolution to 2560 x 1440. I have a 27' screen that is 2560 x 1440 but I do not see any sizes above 1920 x 1080. What do I do?

That's probably your monitor giving you that notification, not AmigaOS, right?  Can your video card even output that high?  Are you using a dual-link DVI cable?

Title: Re: Screen resolution
Post by: Oldsmobile_Mike on February 07, 2015, 02:18:17 AM

See "example display modes (single link)" and "example display modes (dual link)" on the Wiki:

http://en.wikipedia.org/wiki/Digital_Visual_Interface

I, too, had this problem with an ultra-high resolution monitor similar to yours, until I switched to the higher bandwidth cable.  Granted, this was on a PC, using a 6570 video card.  I don't know if the Amiga screenmodes even support resolutions that high?  Wait for someone else with an X1000 to chime in.  I just know about DVI cables.  ;)

Title: Re: Screen resolution
Post by: apsturk on February 07, 2015, 02:18:53 AM

ahh yes now that you say that I do think it is the monitor telling me that. Well I a using a DVI cable. I think a single DVI is needed for 2560 x 1440. Wider than that I would need dual link, however I could be wrong on that. the modes it shows only go to 1920 x 1080 normal HD. I will check on the card specs

Title: Re: Screen resolution
Post by: apsturk on February 07, 2015, 02:35:46 AM

Ok I just learned a bit thanks Oldsmobile_Mike. I am using a duel link DVI cable and card. So any ideas people

Title: Re: Screen resolution
Post by: som99 on February 07, 2015, 10:27:34 AM

Nearly all (if not all) ATI/AMD and Nvidia cards has supported resolutions up to 2560x1600 (newer cards above that) for over a decade now and some cards older then a decade supported 2048x1536 so it's safe to say his card supports the resolution and he do not need a dual link cable for that resolution.

My bet is drivers on or something else on AmigaOS 4.x :/

Title: Re: Screen resolution
Post by: cap on February 07, 2015, 11:18:22 AM

How about going to screenmode preferences and clicking on monitors and adding your own manual setting.

Title: Re: Screen resolution
Post by: danbeaver on February 07, 2015, 11:23:38 AM

Can also be done with P96 I believe

Title: Re: Screen resolution
Post by: Bennymee on February 07, 2015, 11:43:52 AM

@apsturk
During the installation I gave maximum resolution in os4.x of 1920x1200. After reboot changed to automatic dectection of settings in the Monitors tab in screenmode prefs. After that al resolutions are shown. I'm using a Dvi-d single link to HDMI cable to display 1080p, 2560x1440@60 and 3840x2160@30 with a Radeon 6450 card.

Title: Re: Screen resolution
Post by: apsturk on February 07, 2015, 05:49:05 PM

@Bennymee

I will give that I try. I did not see the first time I looked. Thanks

Title: Re: Screen resolution
Post by: apsturk on February 07, 2015, 05:57:40 PM

@Bennymee

That did the trick!!  Thanks pal  :)

-Aaron