Database Develop

[Question] Dual Monitor in Raspberry Pi

Hello there, I'm new at the raspberry Pi world, and I need to know if its possible to get dual monitor working on raspberry pi.
Like, I'll get a HDMI monitor, to display (media, videos), and I wanted to plug in a touch screen monitor to control.
Like a media center with a touchscreen monitor for the control and a HDMI monitor to display.
Is it possible? Easy?
Thnks in advc.

You can use an external device to clone display on both. (matrox etc)
I'm unsure if the Pi can handle two screen by itself, and you can plug only one screen to it, there's low chances an full usb screen could wrk because of drivers.
Regards

Magissia said:
You can use an external device to clone display on both. (matrox etc)
I'm unsure if the Pi can handle two screen by itself, and you can plug only one screen to it, there's low chances an full usb screen could wrk because of drivers.
Regards
Click to expand...
Click to collapse
The problem is that I dont want a clone display, i need a diferent screen....
If I got a full USB screen that supports linux drivers it should work, right?
Or maybe some USB/VGA? Dunno

caioketo said:
The problem is that I dont want a clone display, i need a diferent screen....
If I got a full USB screen that supports linux drivers it should work, right?
Click to expand...
Click to collapse
Yes it ***should***, but remember the Pi is not a power beast, if you put two uncloned 1080p screen it will probably lag.
Regards

Magissia said:
Yes it ***should***, but remember the Pi is not a power beast, if you put two uncloned 1080p screen it will probably lag.
Regards
Click to expand...
Click to collapse
The second screen will be a 7'' touchscreen just for controls, not 1080p... it can be ugly
Do you know anywhere I can buy this full USB display?

I know displaylink are suposed to have some full usb monitor/projector but i don't know anything about their support on linux.
Regards

Not sure its going to be able to handle two screens no matter the resolution (unless its like 800x480), the other issue is power, the display cant take its power via USB it will need to be self powered or you will need to get a powered usb hub

zacthespack said:
Not sure its going to be able to handle two screens no matter the resolution (unless its like 800x480), the other issue is power, the display cant take its power via USB it will need to be self powered or you will need to get a powered usb hub
Click to expand...
Click to collapse
What about two screens with something like a dual hdmi cable. Or one moniter to hdmi and one to composite.
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2

Dual monitor using xrandr
You can have as many external displays as the number of ports permit. Whether it will slow down is another question. However, you can have a second monitor without much overhead. To reduce the overhead to drive big display, you can install a very light window manager. You should have X server installed. install the awesome window manager. Command to install it may vary with different linux distro. For Raspbian,
Code:
sudo apt-get install awesome
For Arch Linux,
Code:
sudo pacman -S awesome
Or Pidora,
Code:
sudo yum install awesome
After you install awesome, while you login to the system, select "awesome" as the environment rather than openbox or something (from the login manager)
Now comes the real job. The above steps were optional that would reduce any lags. Connect you display to Rpi. Now we have to query the displays connected using xrandr command
Code:
xrandr -q
Now it will display all the available displays. Now we have to manually tell which display to connect.
Code:
xrandr --output VGA1 --mode 1280x1024 --right-of LVDS1
This command tells the X server to show a desktop, which is logically placed right of your primary display, in the new monitor which is connected via your VGA port. If your are connecting to the HDMI port, the name will be different from VGA1. Check the output of xrandr -q and choose the correct one. Your will also get the name of your primary display from that command. In the example, LVDS1 is the primary display
If you are using awesome, you will have to learn a little bit how to get around there. Its usage is a little different than the conventional environments.
Thats it, you have two displays connected. A
nd dont forget the thanks button, desperately in need of them!

If you want a secondary display just for controlling may be a solution to implement a REST api based server on PI and a client on any smartphone.

you could try a DisplayLink USB docking station. they are basically powered USB hubs with a built in USB to DVI/VGA interface. I've used it before for a CEO's ultrabook. It was okay for documents and e-mail, but I'd not recommend it for users dealing with video (although now with USB3 it's probably much better)
For your purposes it may be perfect, plus it likely can power the Pi as well. udlfb (libdlo) is in the Linux kernel so it should be available on Pi distros.

You can run a 7inch Touch Screen and HDMI at the same time
New Official Raspberry Pi DSI screen launches .. Raspberry have release a 7inch touch screen that connects via the DSI giving the PI-2 the abilty to run separate displays on each as per this link ...
http://raspi.tv/2015/new-official-raspberry-pi-dsi-screen-launches
Quote from RasPi.TV Site ...
"As long as you’ve allocated 128 Mb RAM to GPU, dual-screen use is flawless. I plugged in my 23? Samsung HDMI TV and sent a video through HDMI with omxplayer --display 5 filename.mov This then played flawlessly while I messed around using the camera module on the DSI display. I had it showing live camera video output and also made it wrap live video round a spinning 3d teapot to try and stress the GPU. Neither display skipped a beat. You can see that in the video."

Can I use Android on top of Windows 10?

I was looking into Dex and I really don't quite like the implementation of it. While I could get the dock and plug it into it's own dedicated HDMI port, either onto my monitor or in the back of my stereo receiver, I would rather have the environment on top of Windows 10, so I don't have to keep switching inputs.
My computer supports USB 2.0 and USB 3.0.
Is there a way to achieve this? In otherwords, have an Android environment which comes from my phone, similar to a HP Lap Dock, on top of my Windows 10 OS?

Soon https://www.theverge.com/2018/10/2/17929908/microsoft-app-mirroring-android-windows-10-desktop

Why not just install an Emulator like Nox or Bluestacks... run Android in a window which can be minimized or stretch?
Or RemisOX, a dual boot?
Sent from my SM-N960F using Tapatalk

JOSHSKORN said:
I was looking into Dex and I really don't quite like the implementation of it. While I could get the dock and plug it into it's own dedicated HDMI port, either onto my monitor or in the back of my stereo receiver, I would rather have the environment on top of Windows 10, so I don't have to keep switching inputs.
My computer supports USB 2.0 and USB 3.0.
Is there a way to achieve this? In otherwords, have an Android environment which comes from my phone, similar to a HP Lap Dock, on top of my Windows 10 OS?
Click to expand...
Click to collapse
really?
just vnc or rdp in that laptop of yours.
with rdp you will have audio and some input redirection.

ASUS Professional Dock...Best RoG Accessory

Linus did a great "real-life" usage video for all the RoG Accessories, and I agree the Professional Dock is best of them all.
Just connect it to the wireless Keyboard Mouse Combo, and you are ready for some Hi-Speed Gaming...
ASUS ADSU001 Professional Dock
- Gigabit Ethernet
- Dual USB 3.1 Type A
- 4k HDMI
- USB 3.1 Type C
Also tested on my Razer Stealth without any issues

Just FYI, By design it seems like the HDMI Output only works via the "SidePorts", specifically the "BLACK" connector, or the one on the LEFT when the RoG Phone is held in landscape mode.
The SidePorts will contain Dual TypeC, they are colored LEFT=BLACK, and RIGHT= BRONZE, ONLY USE the LEFT one for Charging, and HDMI OUT. The RIGHT Port is mostly-Likely for AUDIO ONLY
Just referencing the AirCooler that comes with the phone, that's the same arrangement

i used some other brand but cant get the mapping to works.. can tell me what game u try shows the mapping

ZiCott said:
Just connect it to the wireless Keyboard Mouse Combo, and you are ready for some Hi-Speed Gaming...
Click to expand...
Click to collapse
Is that all you did with it? Because trying to run a browser on a big screen with a screen mirror is terrible when you have the status bar that's like an inch tall, and then all the fonts are ridiculously sized way too big. Basically it's useless for email or browsing on a bigger screen since it doesn't work as a second screen but just a screen mirror.

Developer Options
SeanBlader said:
Is that all you did with it? Because trying to run a browser on a big screen with a screen mirror is terrible when you have the status bar that's like an inch tall, and then all the fonts are ridiculously sized way too big. Basically it's useless for email or browsing on a bigger screen since it doesn't work as a second screen but just a screen mirror.
Click to expand...
Click to collapse
Dear Sean, I don't know which external monitor you are using, but I recommend you enable developer options on the device.
In developer options there is DRAWING, Simulate Secondary Display, and select the resolution your monitors supports. Let up know how that works out for you.
I have a Tablet, and a laptop for email, and web browsing. TBH...
In general I don't think Android was developed properly for the large screen size, and that's why it has never taken off. Samsung is trying with their DEX, but the RoG was designed for gaming on the large screen.
ASUS also offers the DESKTOP DOCK, maybe that will offer additional display options, but that was just out of my budget.
ZiCott

It's a 30 inch Dell 2k display, but I expect to plug it into any random 24inch display. There aren't really a lot of differences between the pro dock and the desktop dock, the desktop has a lot more ports and does enable a second screen experience but it's still a small screen android experience on a much larger screen, so about the same. I just decided to go the root route and get an actual Linux distro on with Linux Deploy. What it's doing, once I figured that out, is running a VM on the device and then you remote connect to with VNC from the device itself or any other device on the network. That's kinda nice because it means the VM is running in the background and you can still use the phone as is. It also means that running the RealVNC app on the device on a big screen is a lot more useful as an actual desktop environment. What it doesn't mean however is that you're running on the local Linux that actually operates the device, which may be for the better if you don't want to try running an actual desktop class window manager on Android's flavor of Linux. Good news is, it appears to operate really quickly, but I haven't yet tried to get a web development environment running on it, that's next.

ZiCott said:
In developer options there is DRAWING, Simulate Secondary Display, and select the resolution your monitors supports. Let up know how that works out for you.
ZiCott
Click to expand...
Click to collapse
Maybe I'm stupid and correct if I'm wrong but what exactly is that going to help with? It's not like I can just move over the simulated screen to the tv/monitor like you can do on a computer.

It just playing games on the larger screen, no need to tell me you're stupid, and you're not wrong. Merry Xmas

FYI I tried a 3rd party portable dock I had for my Switch and it worked (via side port) perfectly connected to my 55" 4K TV. I'm running Nova launcher and had no issues rotating my home screen to landscape. Saved myself about $100. Also had a $14 USB to LAN adapter connected. http://a.co/d/65jc58T http://a.co/d/bma6jOL

ZiCott said:
It just playing games on the larger screen, no need to tell me you're stupid, and you're not wrong. Merry Xmas
Click to expand...
Click to collapse
That does not need to be toggled on to play games or even to view the phone itself as it just mimics a secondary screen on the current screen only. Doesn't fix the resolution for viewing or playing either.
On a side note, for people that want to fix the giant resolution there is an app for that lol it's called secondscreen (https://play.google.com/store/apps/details?id=com.farmerbb.secondscreen.free)
You can change the resolution for a connected display and then revert back to the phone screen resolution when you disconnect, change the dpi to around 180 when your connected display is on also as there is a tablet like ui that looks better imo.

Will this accessory work with any usb-c phone?
---------- Post added at 04:27 PM ---------- Previous post was at 04:23 PM ----------
randaddy said:
FYI I tried a 3rd party portable dock I had for my Switch and it worked (via side port) perfectly connected to my 55" 4K TV. I'm running Nova launcher and had no issues rotating my home screen to landscape. Saved myself about $100. Also had a $14 USB to LAN adapter connected. http://a.co/d/65jc58T http://a.co/d/bma6jOL
Click to expand...
Click to collapse
Thank you.

Let us know which phone you have...
dibt359 said:
Will this accessory work with any usb-c phone?
---------- Post added at 04:27 PM ---------- Previous post was at 04:23 PM ----------
Thank you.
Click to expand...
Click to collapse
Mileage may vary, but I have tested with Razer Phone 1, Lenovo X1, and also with RazerBlade 13", and works fine

Question: Can you sign in using a password, using the dock. Like can you type your password in using a keyboard in mouse? My screen is broken and I'm trying to get into the device.
I know this isn't where questions go but, I think the website is bugged it won't let me create a new topic or anything because "I'm not signed in" then when I click to sign it it says I am.

ZiCott said:
hello, if I use another brand dock instead of Asus professional dock or desktop dock, will the keyboard and mouse still work for gaming because Asus products are no longer sold, I couldn't find it anywhere??????
Click to expand...
Click to collapse

Windows 10 to Note 9. Can I Remote Desktop and force DeX?

I've never actually tried this, but is there a way to:
Remote Desktop into the Galaxy Note 9?
Force the session to DeX mode?

JOSHSKORN said:
I've never actually tried this, but is there a way to:
Remote Desktop into the Galaxy Note 9?
Force the session to DeX mode?
Click to expand...
Click to collapse
I'm trying to visualize this. You begin on a windows laptop... display the Remote Desktop of your phone on the laptop... and then... what? Not seeing the last step.
If you ran DeX on the phone, it would show you nothing except the phone's "desktop" which would be what the phone shows, not what DeX is showing on any laptop. In addition, DeX would want to project onto your laptop, which would mean you'd have DeX running (I guess?) alongside the phone's display on your laptop.
I project my Mac laptop screen to a Roku Ultra and from there to our old TV set. I can then run DeX on my laptop via the phone and it projects onto our TV via the Roku since it is displaying on the laptop. But all this is only showing you that I, too, find esoteric (and fun) ideas to try out. I've not once used my Roku/TV to do any work via DeX. A bit cumbersome...
Forgive me if I've missed your purpose.

shonkin said:
I'm trying to visualize this. You begin on a windows laptop... display the Remote Desktop of your phone on the laptop... and then... what? Not seeing the last step.
If you ran DeX on the phone, it would show you nothing except the phone's "desktop" which would be what the phone shows, not what DeX is showing on any laptop. In addition, DeX would want to project onto your laptop, which would mean you'd have DeX running (I guess?) alongside the phone's display on your laptop.
I project my Mac laptop screen to a Roku Ultra and from there to our old TV set. I can then run DeX on my laptop via the phone and it projects onto our TV via the Roku since it is displaying on the laptop. But all this is only showing you that I, too, find esoteric (and fun) ideas to try out. I've not once used my Roku/TV to do any work via DeX. A bit cumbersome...
Forgive me if I've missed your purpose.
Click to expand...
Click to collapse
On Windows 10 (for instance):
Open Remote Desktop
Type in your phone's login credientials
You're logged into your phone. Instead of actually seeing your phone within your Remote Desktop session, you see your phone in DeX mode. THAT'S what I'm looking for. Essentially, DeX for PC without having to use Dex for PC since it doesn't support wireless.
Is that possible at this time?

JOSHSKORN said:
On Windows 10 (for instance):
Open Remote Desktop
Type in your phone's login credientials
You're logged into your phone. Instead of actually seeing your phone within your Remote Desktop session, you see your phone in DeX mode. THAT'S what I'm looking for. Essentially, DeX for PC without having to use Dex for PC since it doesn't support wireless.
Is that possible at this time?
Click to expand...
Click to collapse
But your phone in DeX mode shows.... nothing. Because DeX only "shows itself" on the laptop where the DeX app for Windows/OSX is running. The phone serves DeX to the laptop. So... you'd see nothing except the phone. Which shows you nothing. The snag being that handshake - which requires at present a usb connection - between DeX served up by the phone and DeX being connected to via the DeX app on the laptop.
And I hope I'm wrong, because it would be really cool if you somehow were able to get a DeX session wirelessly before UI 2.5 even comes out.

above msg
i do belive hes refering to getting the note 9 into wireless dex

Yup. He's pretty much asking for Wireless DeX.
It'll be out with OneUI 2.5 (hopefully, if they dont choose to trim the firmware from features), in about 2 weeks tops. And it'll require the Dex app installed on Windows, it definitely wont work with RDP.
Edit: and i assume it'll work only locally on the network.

PlutoDelic said:
Yup. He's pretty much asking for Wireless DeX.
It'll be out with OneUI 2.5 (hopefully, if they dont choose to trim the firmware from features), in about 2 weeks tops. And it'll require the Dex app installed on Windows, it definitely wont work with RDP.
Edit: and i assume it'll work only locally on the network.
Click to expand...
Click to collapse
Yep I'm pretty much asking for Wireless DeX, you're right...but with a different approach, since the PC app requires a physical connection. I didn't know if there potentially was a way to force a DeX session if you attempted to connect to your phone through RDP. It would be neat if that were possible. I do know about One UI 2.5 so I guess I'll just have to wait. It does look like it's coming to the Note 9 sometime in October.

JOSHSKORN said:
Yep I'm pretty much asking for Wireless DeX, you're right...but with a different approach, since the PC app requires a physical connection.
Click to expand...
Click to collapse
Well, that's the point of Wireless DeX, it wont require a physical connection with a USB cable, just both devices being on the same network.

Question Is there a faster way of communication between oneplus and desktop.

Trying to look at pictures on computer (been taking lots of them with this camera)
accessing data is stupid slow and it doesn't make sense
phone unlocked with allow data transfer selected
oneplus charger to usb b port at front of case "equally as slow with usb c at back of motherboard" so I dont think the cable is the bottleneck
I feel like ive tried everything including enabling usb debugging (dont know why but I havent been into tech to the level of this amazing forum since I was young so forgive me if answer is obvious google was useless)
Thanks, D

thatoneguydownthestreet said:
Trying to look at pictures on computer (been taking lots of them with this camera)
accessing data is stupid slow and it doesn't make sense
phone unlocked with allow data transfer selected
oneplus charger to usb b port at front of case "equally as slow with usb c at back of motherboard" so I dont think the cable is the bottleneck
I feel like ive tried everything including enabling usb debugging (dont know why but I havent been into tech to the level of this amazing forum since I was young so forgive me if answer is obvious google was useless)
Thanks, D
Click to expand...
Click to collapse
to clarify transfer is what to be expected but the loading of thumbnails and data amount or size. once youve loaded all of them its fast.
but it takes a few minutes sometimes.
phones generally have good SSDS so does my computer processors on the phone is good, I cant find the bottleneck, does every device do this???

Windows need to read all your photo, every time you connect the phone. And if you have many photos... it could take some minutes ...
For example my Lenovo Legion y540 with i7 gen9 12mb cache, 16gb ram dual chanel, SSD Samsung 980 Pro 256gb for Windows & Samsung 870 Evo 2 Tb for storage. In my case it takes a few minutes. 2, 3 -5 minuntes. Yes is annoying !

thatoneguydownthestreet said:
Trying to look at pictures on computer (been taking lots of them with this camera)
accessing data is stupid slow and it doesn't make sense
phone unlocked with allow data transfer selected
oneplus charger to usb b port at front of case "equally as slow with usb c at back of motherboard" so I dont think the cable is the bottleneck
I feel like ive tried everything including enabling usb debugging (dont know why but I havent been into tech to the level of this amazing forum since I was young so forgive me if answer is obvious google was useless)
Thanks, D
Click to expand...
Click to collapse
If you use the stock Oneplus red cable between the phone and the desktop, it most likely is a 2.0 spec C-type cable (most likely, at least the one that came with my 9 Pro is). Go buy a 3.1 C-type cable (nowadays USB 3.2 Gen 2) or 3.2 C-type cable (nowadays USB 3.2 Gen 2x2)

null0seven said:
Windows need to read all your photo, every time you connect the phone. And if you have many photos... it could take some minutes ...
For example my Lenovo Legion y540 with i7 gen9 12mb cache, 16gb ram dual chanel, SSD Samsung 980 Pro 256gb for Windows & Samsung 870 Evo 2 Tb for storage. In my case it takes a few minutes. 2, 3 -5 minuntes. Yes is annoying !
Click to expand...
Click to collapse
That's annoying, I thought the point of a thumbnail was a low res picture for quick access. You'd think in 2022 we'd have a better way.

heartagramm said:
If you use the stock Oneplus red cable between the phone and the desktop, it most likely is a 2.0 spec C-type cable (most likely, at least the one that came with my 9 Pro is). Go buy a 3.1 C-type cable (nowadays USB 3.2 Gen 2) or 3.2 C-type cable (nowadays USB 3.2 Gen 2x2)
Click to expand...
Click to collapse
Ok so at 2.0 speeds 480 Mbps, suppose all pictures are 15 mb big and they're 1500 of them I'd take 48 seconds to see them all (high res no less)
(But they're not because you click on them and it takes an additional 7 ish seconds to load the image when opened. )
By this logic using a 3.0 cable (4800mbps) ( if ssd supports the speed) should only take about 5 seconds for all images
And it does not because I've used a c to c pixel cable to connect.
So they're must be a software bottleneck preventing a few things
The thumbnail should be small and in turn it should really take no longer than a couple seconds to load low res images ( unless these thumbnails don't exist on the phone and they have to be generated once the phone is plugged in)
It could also be a Windows issue (anyone have a mac that could try accessing their data through the file browser) just like the search feature in Windows takes ages and it's often so bad it can usually be faster finding the file manually it could be a matter of a broken or outdated protocol to read files off a device.
All I'm saying with all of these advertised speeds 5 minutes for 1000 5mb (yes not 15) and a couple big videos is too damn long. I'll be trying to see if there are any softwares out there that let you read of your device in a similar way itunes ( does itunes still exist??) does with apple devices

heartagramm said:
If you use the stock Oneplus red cable between the phone and the desktop, it most likely is a 2.0 spec C-type cable (most likely, at least the one that came with my 9 Pro is). Go buy a 3.1 C-type cable (nowadays USB 3.2 Gen 2) or 3.2 C-type cable (nowadays USB 3.2 Gen 2x2)
Click to expand...
Click to collapse
I have a usb3 10gbps cable and it still runs at slow speeds. I think that it's only USB 2.0 over type C

Maybe the 10 Pro has slower USB type C then, my 9 Pro is way faster with a 3.1 cable.

are using a usb 3 port on your computer?
i don't have any issues with transfer speeds.

I forgot to mention, my laptop have only usb 3.1 ports & 1 type C for charging.. & Windows 11 Pro x64.
Type C ports are produced in different versions, from 2.0 from 3.2.
Thumbnail are not the problem. I set my View with Details & select the newer first. Same amount of time. Still the green bar charge all hundreds of photos. Like i have a hdd from 20 years...