Re: small monitor for booting and troubleshooting?

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Re: small monitor for booting and troubleshooting?

Jeff Porten
If you don’t need the monitor until (automatic) user login, Duet Display to iPad should work if you set it to launch in login apps. You may need to set the display to mirroring first before reboot. (Which you can do from SSH in a pinch, I think.) I don’t think you can do so prior to an active user login.

Screen sharing starts to work earlier—in verbose mode, you’ll be down while the Unix text is scrolling up the screen, but screen sharing should kick in when the Apple logo appears on a gray screen. I typically ping the server (starts working immediately) in order to make sure the startup process is going, and then watch a screen sharing window to see when it’s done. Used to be, if you started a Mac headless, it would default to something like 1024x768, but I think they’ve improved that since. (That said, *any* time I’m booting headless, I always test thoroughly before I rely on it.)

Note: I’m reporting pre-login screen sharing when sharing macOS Server. I don’t know if there’s a difference with macOS vanilla.

Best,
Jeff


> On Apr 9, 2018, at 6:55 PM, gastropod <[hidden email]> wrote:
>
> I'm considering getting a 27" iMac while they can still run Sierra, but that means that I'll have to ditch my aging HP that has enough inputs for the four other computers that I screen share to.  Sometimes things go wrong and I have to boot them to a real monitor.  I'd like something small enough that I don't have to rearrange a lot of stuff when I need to use it, but that still has enough resolution to boot a modern system.  It also needs at least one real input (dvi, hmdi, display port), not just usb.
>
> So far I've only found one, from a company I've never heard of, GeChic.  Expensive at about $190, and I haven't found any real reviews, but the form factor and specs would be just right if it works:  13", 1366x768 (fortunately I have magnifiers), several input types, tablet format.  They have other versions and sizes too, including 1080p and IPS, but they get even more expensive fast.
>
> https://www.gechic.com/en-portable-monitor-onlap1303a-overview.html
>
> Are there any others I should be looking at?  I don't suppose there's any way to hack an iPad to use as a bootable monitor?  That would give me an excuse to pay lots more money and get an iPad Pro!
>
> --
> gastropod
>
>
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Re: small monitor for booting and troubleshooting?

@lbutlr
On 2018-04-09 (20:19 MDT), gastropod <[hidden email]> wrote:
>
> I forgot a biggie - starting up from an encrypted disk image.  In principle, you can guess when it's time to put in the password then just type it, but in practice, that never works for me (doesn't help that there's a mix of dvorak and qwerty :-)).

I really wish there was a better solution for this, as it is the reason my servers do not have encrypted volumes, even though they should. I should file a bug on it.

I didn't even know it was possible to type it blind via screen sharing…

--
Incredible! One of the worst performances of my career and they never
doubted it for a second.




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Re: small monitor for booting and troubleshooting?

Curtis Wilcox
In reply to this post by Jeff Porten
On Apr 9, 2018, at 6:55 PM, gastropod <[hidden email]> wrote:
>
> I'm considering getting a 27" iMac while they can still run Sierra, but that means that I'll have to ditch my aging HP that has enough inputs for the four other computers that I screen share to.  Sometimes things go wrong and I have to boot them to a real monitor.  I'd like something small enough that I don't have to rearrange a lot of stuff when I need to use it, but that still has enough resolution to boot a modern system.  It also needs at least one real input (dvi, hmdi, display port), not just usb.
>
> So far I've only found one, from a company I've never heard of, GeChic.  Expensive at about $190, and I haven't found any real reviews, but the form factor and specs would be just right if it works:  13", 1366x768 (fortunately I have magnifiers), several input types, tablet format.  They have other versions and sizes too, including 1080p and IPS, but they get even more expensive fast.
>
> https://www.gechic.com/en-portable-monitor-onlap1303a-overview.html


We have a GeChic at work, I don't think it's this exact model, I think ours is 1080p. It is very lightweight and portable, powered by USB, which is helpful for us. The connection to the video port can be a little fiddly, we only use the HDMI. I don't like that it requires adapters and doesn't come with them for all ports.

There are small monitors that tend to be used with very small computers like the Raspberry Pi.

7" Display 1280x800 (720p) IPS + Speakers - HDMI/VGA/NTSC/PAL
https://www.adafruit.com/product/1667

10.1" 1366x768 Display IPS + Speakers - HDMI/VGA/NTSC/PAL
https://www.adafruit.com/product/2261

For your situation, this seems like the better choice than the GeChic. Read the fine print, power adapters for these are sold separately because Adafruit caters to "makers" who sometimes make their own way of supplying power.




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Re: small monitor for booting and troubleshooting?

Curtis Wilcox
On Apr 10, 2018, at 12:24 AM, gastropod <[hidden email]> wrote:

On Mon, Apr 9, 2018, at 8:52 PM, Curtis Wilcox wrote:
On Apr 9, 2018, at 6:55 PM, gastropod <[hidden email]> wrote:

We have a GeChic at work, I don't think it's this exact model, I think
ours is 1080p.

How's the quality in general?  Fiddly I can probably live with, unless it's the trivially-breaks sort of fiddly.


The build quality is fine, the "fiddliness" comes up when connecting the adapter, the ports are very small, or if you try to move it or the cables around while they're connected.


There are small monitors that tend to be used with very small computers
like the Raspberry Pi.

Unfortunately, they're nearly as expensive, and probably too small to use comfortably even with a good magnifier.  I've tried screen sharing on a regular iPad, and it's a little too challenging.  Thanks for the links though, it's possible that I may want something like that for a Pi in the future.


Yes, the 7" is ~215 PPI so it would be like using a Retina Mac at its native resolution, very small. The 10.1" (which is out of stock) is 155 PPI, not much smaller than the 11" MacBook Air (135 PPI).

Looking at Amazon, filtering "16 inches and under," gives some other options (might want to set an upper price limit too). Some are like the ones Adafruit lists but the Sceptre E165W-1600HC E 16" is 1366x768 and fairly small but otherwise a "normal" monitor. The Eyoyo 12" 16:9 HD 1366x768p might be in the "too small" territory. 




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