I recently just finished building this new PC that uses an RTX 5080. So far, I’ve only booted up, installed Fedora 42 as OS, then open Software and apply all the updates I could, rebooting and repeating the same until I was up to date. I also disabled Secure Boot in the BIOS, before running nvidia-smi and finding out it installed the latest driver itself, I didn’t have to do anything:
alcarodia@alcarodia:~$ nvidia-smi
Sun Oct 19 08:49:13 2025
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.95.05 Driver Version: 580.95.05 CUDA Version: 13.0 |
+-----------------------------------------+------------------------+----------------------+
| GPU Name Persistence-M | Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|=========================================+========================+======================|
| 0 NVIDIA GeForce RTX 5080 Off | 00000000:01:00.0 On | N/A |
| 0% 35C P8 12W / 360W | 409MiB / 16303MiB | 0% Default |
| | | N/A |
+-----------------------------------------+------------------------+----------------------+
+-----------------------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=========================================================================================|
| 0 N/A N/A 2666 G /usr/bin/gnome-shell 97MiB |
| 0 N/A N/A 3141 G /usr/bin/Xwayland 6MiB |
| 0 N/A N/A 3810 G ...aa65d3335fc14eac1f085dd7c59ea 140MiB |
| 0 N/A N/A 4197 C+G /usr/bin/ptyxis 25MiB |
| 0 N/A N/A 4820 C+G /usr/bin/gnome-control-center 24MiB |
+-----------------------------------------------------------------------------------------+
However, my screen looks badly cut, the top bar is barely seen, windows stretch weird, the quality of everything is low, there is noise around fonts, the shadow behind my Settings app window looks very bad, among other visual glitches, and Nvidia Settings says GPU utilization is 0%. This is a screenshot of what these glitches look like:
The top right menu is cut, the shadow behind my Settings window looks worse on my screen than the screenshot for some reason, in mine it looks like it was drawn in Paint. There is also a weird transparent green bar in the GPT chat, only in GPT’s website, no other. It seems harder to notice in the screenshot, I don’t why they are not coming out as I see them on my screen; and weirdly enough, using “Screen” to screenshot shows the entire thing just fine, I had to use “Selection” to show you how it actually displays.
I heard there are “special” steps for the RTX 5080, I haven’t done that thing I did with MOK and keys in my laptop a year ago when F42 came out, not sure if I have to here, it’s pretty hard to find a proper guide for this GPU. Anyone knows one?
UPDATE: This was really weird. The monitor is a Samsung 4K TV, and I am using the same HDMI cable I used with my laptop for 5+ years. I fiddled with the configuration of the TV because I read there’s a chance it is a culprit. I literally only changed its name and icon (it showed as “Unknown” instead of “PC”, and I luckily did it purely out for fun, I wasn’t going to, but pushed myself to do it just to name it Cerebro and choose the PC icon lol), accidentally opened a configuration menu I didn’t use regarding setting up a remote tv controller, then I returned and the following errors were fixed just like that: the bad cropping/zoom it had, which also fixed the noise round text and the mouse feeling sluggish or like gliding in ice.
However, the bad quality in shadows around app windows and the weird green transparent lines are present in ChatGPT…
OK, while typing that (I won’t delete it) I just had the thought to compare those things with my laptop’s screen and, well, I am dumb. The shadows literally look like that and those weird green lines are also present in ChatGPT using my laptop; they are 100% normal, they just became so much easier to notice because of me being nitpicky and extra nervous about having installed everything in the PC well.
Maybe the TV didn’t know what it connected to when it had no OS, it was just a BIOS, and didn’t apply the proper configuration or something. Changing the icon or name probably did it? It says icon and name, I can choose a Blu-ray Device, Videogame Console… feels cosmetic, not necessarily something that would change or affect the output of the display. I am weirded out, I literally just did that ever since making this post.
I sincerely apologize, I think there is nothing wrong with the PC, just me.
