Dell U2410 on the Amiga

**jdryyz** · 24th December 2014, 18:08

Yeah, I do not know what it is about the adapter that does this, but I know it is the source. If I run my RGB to SCART cable into my SCART to HDMI box, the lines disappear. Unfortunately, I have even more complaints about the converter box. Running the signal natively through the display seems the best way to go.

**Methanoid** · 24th November 2016, 21:30

Thread necromancy.. Anyone know how the monitor copes with Amiga modes BETWEEN 15 and 31KHz like I seem to recall one has a sync around 28KHz? Is this a multisync or a bisync?

**Harrison** · 25th November 2016, 11:07

I can't answer that for you and I don't have my monitor setup at the moment to test it out. Maybe Stephen can help.

Dell don't actually state anything in the user guide about resolutions below 30KHz, other than the support for HDMI and other TV resolutions. The lower 15KHz support wasn't ever used as an official selling point and I think it happened as a bi-product of the monitors support for legacy TV modes.

In fact the monitor states a Horizontal scan range of 30 - 81 kHz and a Vertical range of 56 to 76 Hz.

And a maximum resolution of 1920x1200 at 60 Hz.

Would be interesting to find out if it does manage the Amiga's AGA chipset higher scan ranges below VGA.

Regarding the mouse. I've seen artifacts around the Amiga mouse pointer on every LCD screen I've ever used with the Amiga. And it happens on the Atari ST and other systems too. It's because the Amiga anti-aliases around the pointer and the Amiga overlays the mouse pointer above the screen resolution as a sprite of it's own resolution. LCD screens highlight any pixels used to anti-alias (smooth graphical edges) on most graphics originally designed for CRT because the original graphical artists used to utilise the CRTs scanlines in a way to make it look smoother. LCDs show every pixel clearly and this highlights the edges.

Regarding vertical lines on the display. I've also had this with most displays, and even saw them on Microvitic Multisync monitors I used to use on my A1200 and A4000, so it isn't something exclusive to LCD displays. As you say it doesn't seem to happen with RGB SCART as its a clean signal directly from the RGB port. It only seems to be when converting to VGA that it happens.

**Kin Hell** · 26th November 2016, 13:07

Originally Posted by Methanoid

Thread necromancy.. Anyone know how the monitor copes with Amiga modes BETWEEN 15 and 31KHz like I seem to recall one has a sync around 28KHz? Is this a multisync or a bisync?

Not sure if this U2410 monitor goes below 31Khz. I can't find anything about it's spec anywhere! - ....about right for Dell-crap.....

& yes, you are referring to DBLPAL/DBLNTSC @ 27Khz - Multi-Sync Monitor required.

*edit*

Found Specs:

Mon Spec.png

From here: http://www.qed-productions.com/downl...410_manual.pdf

**Stephen Coates** · 27th November 2016, 05:12

Kin Hell: I can confirm that the U2410 supports below 30kHz as that was the whole point of this thread!

Methanoid: I don't have an Amiga set up at the moment, but I'll try out some different screen modes later when I get the chance. I can confirm that DblPal works; there's a photo of it earlier in this thread, but the monitor seemed to be stuck in 'widescreen' mode which didn't look too good.