5 ms·

I personally prefer HDMI or DVI, I don't like DisplayPort because on the display that I have, when I turn off the display the computer detects it as if I've phy

I personally prefer HDMI or DVI, I don't like DisplayPort because on the display that I have, when I turn off the display the computer detects it as if I've physically disconnected the display, which then moves all the windows that I had open around and breaks my macros...

vel0city 3y ago
That's a failure of the display or your GPU, not necessarily the port. I've got several monitors with DisplayPort on a few different GPUs that don't do this behavior. Its not something inherent with DisplayPort.
Aaargh20318 3y ago
Sounds like an OS problem. When I do that it moves all open windows to the remaining display, but when I turn the other display back on it just moves them back. No special software installed for this, just stock macOS Ventura.
- LoveMortuus 3y ago
  But when I turn off my displays that are on HDMI or DVI or VGA, the computer still detects them like normal, like they're connected, because they are. I don't understand in which case the 'act like it's physically disconnected' behaviour would be more desired than what we had with all the standards before. I have read that some DisplayPort displays do have an option in the settings to disable this behaviour.
  - Aaargh20318 3y ago
    > But when I turn off my displays that are on HDMI or DVI or VGA, the computer still detects them like normal, like they're connected, because they are. But since they’re off, that doesn’t make any sense, now you can’t reach any windows on those monitors. I think the macOS behavior make the most sense, move them so you can access them, but move them back once the display is turned on.
    - Joker_vD 3y ago
      Or, you know, don't do any of those silly dances and just let the windows stay where they are the whole time between turning the displays off and on? Reminds me of that problem with video driver update on Windows when the screen is momentarily resized down to 1024x768 resolution and then instantly goes back to 2560x1440: all the non-maxed windows get shrunk down and shifted to the upper-left corner (so they would be visible on a 1024x768 screen) and then they just stay like this. It's totally useless and actually quite annoying.
      - someplaceguy 3y ago
        Sounds like a Windows problem once again...
      - kiririn 3y ago
        This nonsense is solved in Windows 11
    - throw0101c 3y ago
      > But since they’re off, that doesn’t make any sense, now you can’t reach any windows on those monitors. Perhaps I want to turn off the displays to darken the room. I don't want anything done with the programs/windows except not look at them.
- Perz1val 3y ago
  It's not an OS problem, that's how DP is supposed to work and that's in fact stupid
  - Aaargh20318 3y ago
    It’s an OS problem for not handling monitors being disconnected and reconnected properly. What is stupid is having half your windows unreachable because they are on a monitor that is turned off. How does that help anyone? Imagine how annoying it would be on a laptop? I use my laptop in a meeting, and have a few windows open on its screen, then I arrive at my desk and plug in my 2 external monitors and keep my laptop lid closed. Imagine if the windows on the laptop display stayed there, they would be unreachable and would have to manually move them to my other screens every time I moved from a meeting to my desk. Same for the other way around, I disconnect from my monitors and take my laptop to a meeting, and then I can’t access any of the dozens of windows I had open on my 2 external monitors. That would be an absolutely brain dead way of working.
    - hot_gril 3y ago
      Makes sense to move the windows if you close a laptop lid, but not if you turn off a monitor. You can't disconnect the laptop screen, but you can easily disconnect the monitor. I have a cheap laptop that doesn't understand a turned-off monitor as unusable, and it's actually way nicer that way.
      - Aaargh20318 3y ago
        Why is it nicer? What is the use case for having unreachable windows?
        hot_gril 3y ago
        Not having your windows get messed up when you turn the monitor on/off, which is especially relevant for TVs and projectors. On the flip side, what's the use case for connecting to a powered-off monitor and not using it? If I don't want to use a monitor, I won't connect it.
zerkten 3y ago
I /think/ this is related to the EDID support or configuration. What I do know is that you need specific EDID support when using a DisplayPort KVM because that switches the computer away on a regular basis. If you have multiple screens and a single screen KVM (fairly common) it will do the re-arrangement that you've experienced. With EDID support it keeps both output alive resulting in no re-arrangement. EDIT: It seems the correct term may be "EDID emulation".
- tivert 3y ago
  > If you have multiple screens and a single screen KVM (fairly common) it will do the re-arrangement that you've experienced. With EDID support it keeps both output alive resulting in no re-arrangement. Can you tell me some KVM switches that have a working implementation of that feature? I'm looking for one. I'm still using a DVI KVM, because when I tried to upgrade to Displayport (years ago), I ran into the problem you describe and gave up.
  - zerkten 3y ago
    I have a TESmart (TES-HDK0402A1U-USBK) from https://www.amazon.com/gp/product/B08259QL5J/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 https://www.amazon.com/gp/product/B08259QL5J/ref=ppx_yo_dt_b... which works fine in this regard. This was probably the 4th DisplayPort KVM I tried due to keyboard issues with the others.
    - dogline 3y ago
      I'm looking too, but that one linked has HDMI out only, with DP and HDMI in. Don't you lose the benefit of DP with this setup?
      - zerkten 3y ago
        It has been OK for my needs, but I think you are best getting the KVM and returning if it doesn't meet your needs. I'd probably be more concerned if this was for my photography or gaming machine. For a work setup it has been fine for me.
qubitcoder 3y ago
While not specific to DisplayPort, I've been really impressed with the AV Access 8K KVM Switch [1]. 4K at 120Hz without chroma subsampling was a hard requirement. I use it with macOS Ventura and a Windows 11 desktop. It works nicely in conjunction with a Dell Thunderbolt 3 dock to power an LG OLED and support additional accessories. And it has EDID emulation, which is crucial for maintaining consistent display arrangement. I've tried other DisplayPort KVM switches with mixed success. This is the first one that's worked out of the box. [1] https://www.avaccess.com/products/8ksw21-kvm/ https://www.avaccess.com/products/8ksw21-kvm/ [2] https://www.amazon.com/dp/B0BPRZPFM6 https://www.amazon.com/dp/B0BPRZPFM6?

vel0city 3y ago

That's a failure of the display or your GPU, not necessarily the port. I've got several monitors with DisplayPort on a few different GPUs that don't do this behavior. Its not something inherent with DisplayPort.

Aaargh20318 3y ago

Sounds like an OS problem. When I do that it moves all open windows to the remaining display, but when I turn the other display back on it just moves them back. No special software installed for this, just stock macOS Ventura.

LoveMortuus 3y ago
But when I turn off my displays that are on HDMI or DVI or VGA, the computer still detects them like normal, like they're connected, because they are. I don't understand in which case the 'act like it's physically disconnected' behaviour would be more desired than what we had with all the standards before. I have read that some DisplayPort displays do have an option in the settings to disable this behaviour.
- Aaargh20318 3y ago
  > But when I turn off my displays that are on HDMI or DVI or VGA, the computer still detects them like normal, like they're connected, because they are. But since they’re off, that doesn’t make any sense, now you can’t reach any windows on those monitors. I think the macOS behavior make the most sense, move them so you can access them, but move them back once the display is turned on.
  - Joker_vD 3y ago
    Or, you know, don't do any of those silly dances and just let the windows stay where they are the whole time between turning the displays off and on? Reminds me of that problem with video driver update on Windows when the screen is momentarily resized down to 1024x768 resolution and then instantly goes back to 2560x1440: all the non-maxed windows get shrunk down and shifted to the upper-left corner (so they would be visible on a 1024x768 screen) and then they just stay like this. It's totally useless and actually quite annoying.
    - someplaceguy 3y ago
      Sounds like a Windows problem once again...
    - kiririn 3y ago
      This nonsense is solved in Windows 11
  - throw0101c 3y ago
    > But since they’re off, that doesn’t make any sense, now you can’t reach any windows on those monitors. Perhaps I want to turn off the displays to darken the room. I don't want anything done with the programs/windows except not look at them.
Perz1val 3y ago
It's not an OS problem, that's how DP is supposed to work and that's in fact stupid
- Aaargh20318 3y ago
  It’s an OS problem for not handling monitors being disconnected and reconnected properly. What is stupid is having half your windows unreachable because they are on a monitor that is turned off. How does that help anyone? Imagine how annoying it would be on a laptop? I use my laptop in a meeting, and have a few windows open on its screen, then I arrive at my desk and plug in my 2 external monitors and keep my laptop lid closed. Imagine if the windows on the laptop display stayed there, they would be unreachable and would have to manually move them to my other screens every time I moved from a meeting to my desk. Same for the other way around, I disconnect from my monitors and take my laptop to a meeting, and then I can’t access any of the dozens of windows I had open on my 2 external monitors. That would be an absolutely brain dead way of working.
  - hot_gril 3y ago
    Makes sense to move the windows if you close a laptop lid, but not if you turn off a monitor. You can't disconnect the laptop screen, but you can easily disconnect the monitor. I have a cheap laptop that doesn't understand a turned-off monitor as unusable, and it's actually way nicer that way.
    - Aaargh20318 3y ago
      Why is it nicer? What is the use case for having unreachable windows?
      - hot_gril 3y ago
        Not having your windows get messed up when you turn the monitor on/off, which is especially relevant for TVs and projectors. On the flip side, what's the use case for connecting to a powered-off monitor and not using it? If I don't want to use a monitor, I won't connect it.

zerkten 3y ago

I /think/ this is related to the EDID support or configuration. What I do know is that you need specific EDID support when using a DisplayPort KVM because that switches the computer away on a regular basis. If you have multiple screens and a single screen KVM (fairly common) it will do the re-arrangement that you've experienced. With EDID support it keeps both output alive resulting in no re-arrangement. EDIT: It seems the correct term may be "EDID emulation".

tivert 3y ago
> If you have multiple screens and a single screen KVM (fairly common) it will do the re-arrangement that you've experienced. With EDID support it keeps both output alive resulting in no re-arrangement. Can you tell me some KVM switches that have a working implementation of that feature? I'm looking for one. I'm still using a DVI KVM, because when I tried to upgrade to Displayport (years ago), I ran into the problem you describe and gave up.
- zerkten 3y ago
  I have a TESmart (TES-HDK0402A1U-USBK) from https://www.amazon.com/gp/product/B08259QL5J/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 https://www.amazon.com/gp/product/B08259QL5J/ref=ppx_yo_dt_b... which works fine in this regard. This was probably the 4th DisplayPort KVM I tried due to keyboard issues with the others.
  - dogline 3y ago
    I'm looking too, but that one linked has HDMI out only, with DP and HDMI in. Don't you lose the benefit of DP with this setup?
    - zerkten 3y ago
      It has been OK for my needs, but I think you are best getting the KVM and returning if it doesn't meet your needs. I'd probably be more concerned if this was for my photography or gaming machine. For a work setup it has been fine for me.

qubitcoder 3y ago

While not specific to DisplayPort, I've been really impressed with the AV Access 8K KVM Switch [1]. 4K at 120Hz without chroma subsampling was a hard requirement. I use it with macOS Ventura and a Windows 11 desktop. It works nicely in conjunction with a Dell Thunderbolt 3 dock to power an LG OLED and support additional accessories. And it has EDID emulation, which is crucial for maintaining consistent display arrangement. I've tried other DisplayPort KVM switches with mixed success. This is the first one that's worked out of the box. [1] https://www.avaccess.com/products/8ksw21-kvm/ https://www.avaccess.com/products/8ksw21-kvm/ [2] https://www.amazon.com/dp/B0BPRZPFM6 https://www.amazon.com/dp/B0BPRZPFM6?