Your Ryzen 7 isn't a first gen 1700-1800x ? There is a segmentation fault on this generation of processor if manufactured begin 2017 under linux.

Ctrl+alt+f1 work for open console ?
Have you try to reach your computer with SSH from another one ? Ping reply ?
I have some issues like that and often Xorg stay stuck at 100% not know if it's an hardware issue or software totally random and sometime all work fine but mouse can't interact anymore with windows (the cursor click seem stuck to only one window) but keyboard work on all windows. I restart slim and solve often all my issue. I use slim with mate.

Thank you for your help this time the driver and usb/rj45 work fine
Probably the "usbcore.quirks" who solve this issue.

The last error is on my side but not know exactly what is the problem for the moment so sorry.
I try on a third computer same error but finally use another vlan and catch IP directly.

auto eth0
iface eth0 inet dhcp

I'm with root

I try that now
Thank you

Sorry for this bug but it's very strange. I upgrade my kernel to the latest 5.10 from Chimaera but seem the exact same issue.
Integrated driver load the firmware without issue but same problem
Compiled driver from Realtek website not load firmware but same problem again

When I fix the static ip address tcpdump view the ping query AND ping reply but nothing come back to the console (no error, no ping).
I try the quirk way now may be it's that

Thank you for idea but not seem work better with backports and even chimaera
firmware-realtek                                            20201118-1

ls /sys/class/net
eth0 lo

ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 00:.. brd ff:ff:ff:ff:ff:ff

DHCP packets :

Request : 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:... (oui Unknown), length 300, xid 0x8f75377b, Flags [none]
          Client-Ethernet-Address 00:.. (oui Unknown)
Reply : dhcpserverip.bootps > 192.168.X.X.bootpc: BOOTP/DHCP, Reply, length 300, xid 0x8f75377b, Flags [none]
          Your-IP 192.168.X.X

3s later ask again an ip and server reply again with the ip..

Not really understand your question but it's another computer and I have another network card if needed.
Just want to understand why I can't made this thing work and I have installed firmware-realtek too

Yes my kernel is upgraded to 5.8 and use 450.66 who it's only available on beowulf backport without error.
I can try to remove all nvidia driver and try again with nouveau but without error cuda search a nvidia driver. Not sure now but I try to install cuda without nvidia in my first attempt

I try thank you for your help

Hello,

What you need exactly ?
It's a Nvidia 2080 Super with 450.66 driver no issue before put this graphic card in the computer so not another hardware issue and this card work fine. This graphic card run and cuda too. I have not choice to use proprietary driver for enable cuda operation.
Not any issues on ssh console.

I have no graphical interface who start on this computer only console and freeze at this time exactly :
[   13.666570] ppdev: user-space parallel port driver
[   13.702724] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  450.66  Wed Aug 12 19:37:58 UTC 2020
[   13.758279] [drm] [nvidia-drm] [GPU ID 0x00000800] Loading driver
[   13.821080] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000c0000-0x000dffff window]
[   13.821188] caller _nv000745rm+0x1af/0x200 [nvidia] mapping multiple BARs
[   14.346998] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[   14.413248] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:08:00.0 on minor 0
[   14.450778] nvidia-uvm: Loaded the UVM driver, major device number 241.

I view nvidia modset and try different settings like read on some forums but nothing work.
I not view any error or anything all work fine because when I change tty window all is there and refreshed. If I clear my screen each time before reach end of display line I can use without change tty

So someone probably have already an issue like that and may be an idea where to look or what to change.

Thank you

I'm sorry to revive a so old thread but exactly same issue since months/year happen and not only on this computer. Nvidia or AMD seem not change anything read somewhere that's caused by login interface why I replace lighdm by slim.
My problem is similar often only one window work and all other are "unreachable" with mouse.
With keyboard you can change switch between windows and terminal work but mouse just can't select windows.
Sometime by right clicking everywhere you can change focus to another window but still locked on this windows with mouse.

Reboot often give the exact same issue each time for solve my issue I open a terminal and restart slim. That's restart whole GUI and work fine after that. This problem come totally random sometime at boot and sometime nothing during weeks.

I read somewhere that's an issue caused between login manager and gnome. I use mate and slim on all computers.
Same type of issue happen sometime when wake up from sleep you just can't login because can't select password field and can't enter the password. Rebooting slim in a terminal work but you lost all open windows.

If this can help someone