MAX2 HDMI not useable: wrong display resolution


#1

Hi, it seems that the HDMI connector suggests (through EDID) to the connected computer a resolution of 2104x1560 instead of the correct/native resolution of 2200x1650. As consequence the monitor application of MAX2 produces rather unreadable graphics output.

I tried running a VNC client on the MAX2 device, using native resolution, and in this case the graphics was perfect and wonderful.

model: Max2
build number: 2018-01-05_21-38_1.8.3_bc46981


#2

Hi Massimo, may I know the brand and size of your computer?

For a better display performance and visual experience, the official recommended computer resolution settings are as follows:

1024x768pix with 100% zoom in

1280x960pix with 125% zoom in

1400x1050pix with 150% zoom in


#3

Hi Afra, the problem was on my side: I had Redshift enabled, and this application was changing the white background into gray, and the Boox in A2 mode showed a diffuse pattern of dots, simulating the gray background, disturbing the vision/readability of text. After disabling Redshift, the HDMI/A2 mode is acceptable for editing.

As you answer suggests, if I increase the resolution (I tried 2200x1650), I had to increase the zoom factor of fonts, loosing any potential benefit, so 2104x1560 is fine.

By the way, I hope that in future the Boox will support more modes than the A2, through the HDMI port, because in other modes the text is a lot more readable and beatiful.


#4

Hi Massimo, thank you for your valuable advice.

Any questions or comments, pls feel free to contact us.


#5

Hello.
the resolution of 2104x1560 is coming from Max2’s EDID( of VESA DDC) setting.
its better to collect EDID setting.

when Max2 connect with PC, Max2 send EDID to PC. there is some information about monitor in EDID, then PC know which max resolution Max2 have.
一改EDID就好了.


#6

x collect
o correct


#7

Onxy–can you help us to get the Max2 to run at its native crisp and clear 2200x1650 resolution in Windows over HDMI?
Thanks–that would be great.


#8

Hi Andy,

The screen’s aspect ratio of our Max 2 is 4:3, but usually the aspect ratio of PC is 16:9.

So when use second monitor function, for a better display performance and visual experience, the official recommended computer resolution settings are as follows:

1024x768pix with 100% zoom in

1280x960pix with 125% zoom in

1400x1050pix with 150% zoom in


#9

Could you still make it possible to run the Max 2 at native resolution? The native resolution is higher. Moreover, running it at native resolution would not involve interpolation.
Thanks


#10

Hi Andy, when using Max 2 as the second monitor, the resolution presented on Max 2 is the resolution set by the computer.


#11

Could you provide a monitor profile for Windows? Because as other users have noted, Windows doesn’t manage to set or offer the native resolution. Thanks


#12

Hi Andy, as I mentioned before, the screen’s aspect ratio of our Max 2 is 4:3, but usually the aspect ratio of PC is 16:9, so when use second monitor function, we need to set the resolution presented on the Max 2 for a better display performance. Currently, our Max 2 can not automatically adapt the computer resolution,but you only have to set the resolution when using the second monitor for the first time, next time it will autimatically adapt the computer resolution.


#13

Thanks, just to clarify, I have not been able to set it to its native resolution in Windows 10 64 bit pro.
2200x1650 or 1650x2200.


#14

Both 1024x768, 1400x1050 and 2104x1560 works for me (but not 2200x1650). Although if one sets the scale factor (I used 200% for 2104x1560) one get about the same information density, so no real benefit of higher setting.


#15

The problem is that the scaled resolution is is not as crisp as it could be, hence a waste of good hardware.


#16

if one sets the scale factor (I used 200% for 2104x1560) one get about the same information density, so no real benefit of higher setting

Not correct in general terms, maybe just contextual to one setting of Microsoft Windows (which in fact I have seen occasionally terribly messy when it comes to scaling) - which means you have another problem, this relevant to MS Windows.

If you set (when possible) a resolution of 2200x1650, like the native one the EPD display, and set up your visual features accordingly - e.g. 200% dpi fonts, you get a perfectly crisp rendering.

If you instead set a resolution of even 2104x1560, which is ~90% of the actual area, the screen is enlarged and everything becomes (slightly) blurry. The difference is immense, “a softened picture instead of a sharp illustration” - very evident when you compare the rendering of native android applications vs the rendering of the Monitor application.

Andy is correct.


#17

The problem is that the scaled resolution is is not as crisp as it could be, hence a waste of good hardware

I somehow overlooked this thread, only read it today. You are absolutely correct.
I also requested being able to use 2200x1650 resolution
(HDMI Monitor - 1:1 resolution, 2200x1650 for Max2)
and, by the way, the ability to use it as portrait
(HDMI Monitor - portrait)


#18

You are right, if we get a more crisp picture we may not need to put as large scale.
I afraid that the e-paper will not be crisp enough to use 1 pixel wide lines in fonts (as on LCD), and you need to set a big font or scale.
I meant the “same information density” in the sense of “same small amount of code lines” in the example of code editing. But more sharp picture would be great even in that case!


#19

Currently, our Max 2 can not automatically adapt the computer resolution

Hi Afra, the problem is not that the desktop OS retrieves the resolution correctly (I think it does receive what the Max2 sends, which is 2104x1560), the problem is that we cannot set the “correct” resolution: 2200x1650. Not on MS-Windows, apparently, and not on Ubuntu. The maximum we are getting is 2104x1560.

If we do not set the resolution to the native one, the rendering gets slightly blurry (which somehow reduces the benefit of EPD, which is most useful when it is sharp) - this is why it’s a problem. (If I understand correctly, Windows may then benefit from “changing the theme” instead of “setting a scale factor”, to overcome its own blurriness - but I do not really know in depth how recent Windows versions work.)


#20

I afraid that the e-paper will not be crisp enough to use 1 pixel wide lines in fonts (as on LCD), and you need to set a big font or scale

You may want to use a “theme” that shows enlarged windows features (e.g. scrollbars), high contrast and big fonts (MS-Windows did have a DPI setting). This is not zooming! Zooming will blur the result.
E-ink displays are immensely crisp. Just check your native Android application. Your desktop viewed through the Monitor should look like that.

I meant the “same information density” in the sense of “same small amount of code lines” in the example of code editing. But more sharp picture would be great even in that case!

Well yes, you can read the same page on dry paper and on wet paper, and they contain the same information, but you want to read the dry sheet ; )