Black and frozen desktop

[ECaue]

I'm facing a strange issue with my Linux Mint Tricia. I'm having the same issue as described in this post:
viewtopic.php?p=2162358&sid=915aef78f58 ... c#p2162358

My Machine's infos:

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System:
  Host: TARDIS Kernel: 5.0.0-32-generic x86_64 bits: 64 compiler: gcc v: 7.4.0 Console: tty 1 dm:N/A
  Desktop: Cinnamon 5.2.7
  Distro: Linux Mint 19.3 Tricia base: Ubuntu 18.04 bionic

Machine:
  Type: Laptop System: LENOVO product: 20N3SF2P00 v: ThinkPad T490 
  serial: <filter> Chassis: type: 10 serial: <filter> 
  Mobo: LENOVO model: 20N3SF2P00 v: SDK0J40697 WIN serial: <filter> 
  UEFI: LENOVO v: N2IET93W date: 11/10/2020 

Battery:
  ID-1: BAT0 charge: 30.5 Wh condition: 32.0/35.0 Wh (92%) volts: 8.2/7.5 
  model: SMP L16M2PB2 type: Li-poly serial: <filter> status: Discharging 
  cycles: 67 

CPU:
  Topology: Quad Core model: Intel core i5-8365U bits: 64 
  type: MT MCP arch: Kaby Lake rev: C L1 cache: 256 KiB
  L2 cache: 6144 KiB L3 cache: 6144 KiB 
  flags: 1m nx pae sse sse2 sse3 sse4_1 sse4_2 ssse vmx 
  bogomips: 30336 
  Speed: 4092 MHz min/max: 400/4100 MHz Core speeds (MHz): 1: 1223 2: 1237 3: 1241 4: 1270 

Graphics:
  Device-1: Inte1 vendor: Lenovo driver: N/A bus ID: 00:02.0 chip ID: 8086:9dc8
  Display server: X.org 1.20.8 driver: none tty: 170x48
  Message: Advanced graphics data unavaible in console for root.

Audio:
  Device-1: intel driver: iw1wifi v: kernel port 3000 bus ID: oo:1f.3 chip ID: 00:1f.6
  Sound Server: ALSA v: k5.0.0-32-generic  

Network:
  Device-1: Realtek RTL8822CE 802.11ac PCIe Wireless Network Adapter 
  vendor: Lenovo driver: rtw_pci v: N/A port: 2000 bus ID: 01:00.0 
  chip ID: 10ec:c822 
  IF: wlp1s0 state: up mac: <filter> 

Drives:
  Local Storage: total: 245.74 GiB used: 55.99 GiB (22.8%) 
  ID-1: /dev/nvme0n1 vendor: Western Digital model:PC SN730 SDBQBTY-256G-1001 size: 238.47 GiB speed: 31.6 Gb/s
  1anes: 4 SERIAL: <FILTER> REV: 11110101 SCHEME: gpt
  ID-2: /dev/sdaa type: USB vendor: SanDisk model: Cruzer Blade size: 7.26 GiB serial: <filter> rev: 1.00 scheme: MBR

Partition:
  ID-1: / size: 233.24 GiB used: 55.99GiB (24.0%) fs: ext4 dev: /dev/nvme0n1p2 

Sensors:
  System Temperatures: cpu: 42.5 C mobo: N/A gpu: amdgpu temp: 42 C 
  Fan Speeds (RPM): N/A

Info:
  Processes: 142 Uptime: 50m Memory: 7.48 GiB used: 189.8 MiB (2.5%) 
  Init: systemd v: 237 Compilers: gcc: 7.5.0 alt: 7 Shell: bash 
  v: 4.4.20 running in: tty inxi: 3.0.32 

Recently I installed Python 3.7 on my machine in order to use a software. Everything went fine but the next time I turned on my notebook something happened: my desktop image appeared for just a couple of seconds, and after this the screen went all black. The icons of my my desktop are still there but everything is frozen(touchpad and keyboard), and I'm not able to open the terminal.

I tried to use a bootable SanDisk to install Linux Mint from zero but after the boot I'm not able to click on the installation icon(since everything is frozen).

I was able to open the recovery mode and I tried to install a new kernel using the terminal (of the recovery mode), as suggested in that link, but received this error message:

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root@TARDIS:~# apt install linux-oem-20.04
Reading package lists... Done
Building dependencies tree
Reading status information... Done
E: Unable to find package linuz-oem-20.04
E: Could'nt find any package by glob 'linux-oem-20.04'
E: Could not find package via regular expression 'linux-oem-20.04'

[SMG]

I'm facing a strange issue with my Linux Mint Tricia. I'm having the same issue as described in this post:

Welcome to the forum, ECaue.

You are running Linux Mint 19.3 so you can not use the directions from the other topic because they are for Linux Mint 20 versions only.

Recently I installed Python 3.7 on my machine in order to use a software. Everything went fine but the next time I turned on my notebook something happened: my desktop image appeared for just a couple of seconds, and after this the screen went all black. The icons of my my desktop are still there but everything is frozen(touchpad and keyboard), and I'm not able to open the terminal.

Linux Mint uses Python to work properly and it sounds like you may have made changes which changed the version of python which was set as the default for the computer.

After installing Linux Mint 19.3, the first thing one should do is upgrade the kernel to one which is supported as well as run all the other updates. However, somehow, your system is not running the correct version of Cinnamon for LM19.3. Re-installing is probably the best idea.

Your graphics info indicates your system only has Intel graphics, but your system information indicates there is an AMD GPU. Check in the BIOS/UEFI to see what is set for the graphics. See if it is set for Switchable/Hybrid or Discrete or some other setting.

I tried to use a bootable SanDisk to install Linux Mint from zero but after the boot I'm not able to click on the installation icon(since everything is frozen).

Is there a specific reason you installed LM19.3?

I suggest making an install usb of Linux Mint 20.3 "Una" - Cinnamon (Edge) ISO and trying again.

[mikeflan]

Recently I installed Python 3.7 on my machine

One would think that would be fine, but apparently not. Consider using Timeshift to get back to normal.

[ECaue]

Is there a specific reason you installed LM19.3?

Actually, there is no reason. This bootable USB is quite old, and I think by the time I made it, the 19.3 version was just released.

[ECaue]

Recently I installed Python 3.7 on my machine

One would think that would be fine, but apparently not. Consider using Timeshift to get back to normal.

For some reason I was able to enter a live session of LM19.3 and everything is running well.

I tried to use Timeshift via the command:

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sudo timeshift -- restore

but got the message:

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E: No snapshots found on device: '/dev/nvme0n1p

I was able to access my files trough the live session, they are hidden in the path

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/media/root/ba07e1a6-db5d-4e9a-9c4d-6674457a33c7/home/ecaue

wich I called big_path, but no matter how I try I'm not able to transfer the files to other machine using:

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scp big_path/ecaue@ip_of_my_broken_machine:path_to_a_test_file/teste_file.pdf user_in_remote_machine@remote_machine_ip:path_in_remote_machine

The command line keeps waiting eternally. I'm not even able to access my machine remotely using SSH.

[SMG]

I tried to use Timeshift via the command:

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sudo timeshift -- restore

but got the message:

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E: No snapshots found on device: '/dev/nvme0n1p

I was able to access my files trough the live session, they are hidden in the path

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/media/root/ba07e1a6-db5d-4e9a-9c4d-6674457a33c7/home/ecaue

What does this mean that your files are hidden in the path?

If you did not have Timeshift running, then there would be no snapshots. If you manually made snapshots and saved them to a separate drive, that drive would need to be attached when running Timeshift in order to access the snapshots.

Boot to a live session of Linux Mint and open the Timeshift application on the live session. Click Restore and see if the application can find snapshots. Normally, one does not have to manually tell it where to look, but maybe that will be necessary in your situation.