Backup data from Android device (Xiaomi mi A2)

I need to back up data from my Android phone. Operating system is defective (unknown reason). See attached screenshot https://i.stack.imgur.com/znSXR.jpg
I can not enter the bootloader – device is stuck.
That's the only option I have https://i.stack.imgur.com/6uB0o.jpg
Device is not rooted. I'm a PHP developer, but I do not have Android skills. I already tried it adbbut unsuccessful:

  1. adb backup says "adb: no connection to the fuse possible: closed"
  2. ADB Shell says "Error: closed"
  3. pull adb says "adb: error: connection failed: closed"

I can update the ROM via "adb page load"but it is called" update package is older than the current build"because I have the latest Xiaomi update
I do not want to perform a hard reset before a full backup.

thanks for any help

adb – Install a homebrew / Linuxbrew formula on an Android device

How would you install a simple homebrew / Linuxbrew formula via adb on an Android device? In particular, I'd like to install this formula, which includes a cli tool called aamath that translates mathematical formulas into ASCII art. I want to check if I can run this tool in an AdB shell session. Then a second step (which I could put on this site in a future question) would be to write my own apk calling this tool.

An outdated Optiplex with the message "No Bootable Device Found" (No bootable device found)

The included hard drive would not accept the operating system (Win10 and 7), so I replaced it with an older one (from 8 years old) with Win10. But recently it could not be detected at boot time.

I disconnected the SATA and power cables, and now it's running again, though I'm worried that my data will be lost.

How can I find out which component is faulty (hard drive, cable, motherboard, BIOS)? Is there a software diagnostic tool or should I check the hardware for bad connections?

Device Migration – Double-tap to enlarge the Pixela3 Chrome browser?

I've just switched the iPhone to a Pixel 3a, and one of the things I'm missing right now is double double typing to zoom into Chrome. I did not find anything suggesting that the feature does not exist on Android. I found some disabling questions, but I do not see these options myself, so I can not just activate them.

When I double click on a block of text instead of zooming in on the screen, only the word I typed is selected. Instead, I have to adjust the zoom level with pinch-to-zoom until the right size is reached.

Am I missing a mindset to enable this? Is there another way to zoom? Are there alternatives to pinching to zoom?

Audio output device changed, but no actual sound from the headphones

I use macOS Mojave v10.14.5. After plugging in the headphones (while the MacBook was not plugged into the power when I opened KMPlayer to hear music through the speakers), I could not output the sound through the headphones. Nevertheless, the actual sound came from the speakers instead of headphones.
Any idea about this topic?

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networking – netplan – several configurations for the same device

In NetworkManager, I can have multiple configurations for the same network interface (that is, a static address, such as 192.168.33.3a static address [to configure a router in factory settings] to like 192.168.1.3 and a dynamic address[over[via[├╝ber[viaDHCP]).

since I'm not a fan of the configuration file format (I strongly prefer netplan yamlI wanted to know if I can have multiple configurations for a single interface (with Renderer: NetworkManager) to select these configurations in the NetworkManager applet.

I tried to put these 3 configurations into a single file 01-netcfg.yaml:

# This file describes the network interfaces available on your system
# For more information, see netplan (5).

Network:
Version 2
Renderer: NetworkManager
Ethernet:

enp0s31f6:
addresses: [ 192.168.33.3/24 ]
      gateway4: 192.168.33.1
Name Server:
addresses:
- 192.168.33.1
Search:
- Tom

enp0s31f6:
dhcp4: yes

enp0s31f6:
addresses: [ 192.168.1.3/24 ]
      gateway4: 192.168.1.1
Name Server:
addresses:
- 192.168.1.1
Search:
- Tom

as well as each in a single file. but I will only see the first configuration (as netplan enp0s31f6) in the NetworkManager.

Is there a way to do that?


At https://netplan.io/examples I found the section "Using multiple addresses on a single interface" but that will not really help …