Your question is rather vague and confusing.
I very much doubt that you need to use 2 DVI inputs (which your question seems to imply), but it unclear why the monitor has 3 - it is probably designed to connect to 3 computers.
The Pi4 supports 4K ONLY through the left HDMI port. The 2nd port is for a second monitor.
I suggest you use a single connection, ...
Every device that conform to IEEE 802.11 must support a wireless ad hoc network. In the specification it is called independent basic service set (IBSS). The supported interface modes of your WiFi USB dongle show that it also supports it of course.
So IBSS is the keyword you have to look for your ad hoc network.
You are using old style deprecated Debian ...
I had the issue and avoided it by NOT using the line:
echo "/usr/local/bin/python3.8">> .bashrc on the .bashrc file and using only:
echo "alias python = '/usr/local/bin/python3.8'">> .bashrc
Seems to work, kept the used version of python as 3.8 and not enters the terminal running python.
You DO NOT have 2 drives, you probably have 2 mount points, one of which may have a drive mounted on it.
The automount "feature" creates mount points, and can create many if drives are re-attached without properly unmounting - there are many reasons this can occur.
If you attempt to write, without checking that a drive is mounted, you will write to the ...
As noted in my comment above, I found that copy/paste text to/from windows app from/to RPI4 app works* when the user account is setup with sudo privileges (its not necessary to actually use sudo, just have the login in the sudo group).
Works when login as root too.
* One exception: C/P to/from Firefox in windows from/to Firefox on RPi4 doesnt work, either ...
OK, it seems the answer was in the parameters for the openvt command. For whatever reason, the original parameters of -c 1 -f -- are causing the script to exit early on the Pi 4 while -s -w is working:
openvt -c 1 -f -- /home/pi/test.sh
According to the manual here: http://man7.org/linux/man-pages/man1/openvt.1.html, the options are as follows:
According to this post, you can directly install Firefox ESR on Raspbian through debian.org, so, follow the procedure:
1. Download the package:
2. Install the package:
sudo dpkg -i firefox-esr_68.3.0esr-1~deb10u1_armhf.deb
I haven't tried any of these, but these all appear to be in Buster: xzoom (an X11 zoom program), kmag, and gnome-mag.
I'd suggest trying xzoom first, since that is most likely the lightweight one of the bunch.
kmag and gnome-mag may pull in a bunch of kde (kmag) or gnome (gnome-mag) stuff, so you might want to try these on a different SD card...just in ...
Thanks to @Jaromanda X I now know that the problem was due to wrong apt setup.
To be precise, some libraries still do not support buster and in case of Snips (for offline speech detection), the suggested workaround was to switch to stretch repository for it (namely, https://raspbian.snips.ai/stretch).
After doing so, while trying to install libatlas-base-...
Ah, let me see. I have the same problem connecting 5G WiFi. I am using a good brand WiFi router with 2G and 5G option. I set up at home both a 2G network, and called it my2Gnet, and another 5G network, my5Gnet.
Case 1 - Rpi connected to my2Gnet, with and without wired Ethernet connection.
No problem at all. I always see the "Fan ...
Coming from the SysV init camp one could expect the rc.local script to be run as root at the end of the start up process just before it goes multi-user...
That is why any process that is started by it must EITHER: finish up quickly so that the boot process can continue; OR: spawn itself as a daemon like process (in the background with a & at the end of ...
Please note that using /etc/rc.local is deprecated since years. It has limitations due to Compatibility with SysV. We have seen many problems here on this site using it. Following the recommendation of the developers from systemd you should avoid using it. Failing functionallity of rc.local is as expected with upgrading to Raspbian Buster in respect to the ...
If you do not have special requirements to compile OpenCV from source it is not a good idea to do it, in particular by newbies. You find the OpenCV library in the default Raspbian repository. Just look at it with:
rpi ~$ apt list *opencv*
You will find 75 packages. Just pick that one you need and install it.
rpi ~$ sudo apt install python3-opencv
may be ...
Did you make the wpa_supplicant file on Windows? Because, from the error messages, it looks as if it was it was saved as "rtf" and not as plain text. And if that's what happened, the pi will barf on it. Rtf files have lots of formatting information embedded in them which is no use at all for linux configuration.
Try writing the file on your windows machine ...