(solved) Can you start kwin on NixOS without the drm component?
It appears the H11DSi mainboard from super micro doesn't have resizable BAR support and therefore the xe and xedrmfb driver get unhappy.
> [drm] Failed to resize BAR2 to 16384M (-ENOSPC). Consider enabling 'Resizable BAR' support in your BIOS
When I "systemctl stop display-manager.service" I get the blinking curser in the top right. But as soon as it starts the monitor looses signal and the logs show:
The answer is:
> services.displayManager.sddm.wayland.compositor="weston";
Or not, that apparently just partially fixes the greeter. The usb mouse and keyboard are not working on it for some reason too (the KVM one however does?!?).
And it still crashes after I enter the password and try to login.
Note, by fixing it I mean I get a desktop not that it is fully working.
Gnome also logs a lot of drm related errors into the journald.
However compared to kde with kwin it is at least showing something.
I wrote an email to the #Supermicro support asking if it would be possible to get resizable BAR support for the H11DSi motherboard as that appears to be the only way to actually fix this hardware issue here at its root.
In the mean time it appears like some people have already been modding it in: https://winraid.level1techs.com/t/release-resizable-bar-bios-efi-module/100235/826?page=42
However I'm currently on the latest bios version which has additional signature checks in place and doesn't allow to downgrade (that easily) anymore...
If you have the tools:- I would take the chip off the board and do a full read and verify of it. Erase the chip, flash the new file and verify Then put the chip back on If it boots \ 🙂 / if not 😢 . If you don’t have the tools:- HP did have a BIOS recovery method around the time this system was released. It involved putting the latest BIOS from HP on a USB stick with a default name (model neame I think). Putting the stick into a USB2 port (NOT a USB3). Turning it on a...
Oh great, I cannot execute their "saa" support tool because of #NixOS "things"...
Could not start dynamically linked executable: ./saa
NixOS cannot run dynamically linked executables intended for generic
linux environments out of the box. For more information, see:
https://nix.dev/permalink/stub-ld
And it segfaults in a #Archlinux podman container.
But it worked in a #debian podman container in the end.
Reading the readme of the ReBarUEFI project for now. What I don't understand is this part in the FAQ:
https://github.com/xCuri0/ReBarUEFI?tab=readme-ov-file#can-i-use-resizable-bar-on-my-system-without-modifying-bios-
> Can I use Resizable BAR on my system without modifying BIOS ?
I have "pci=realloc" in my kernel cmdline. So why is the xe driver not working then?
@agowa338 I've used this in the past to get resizable BAR to work on an X11SPL-F: https://github.com/xCuri0/ReBarUEFI
And it seems someone used it to get it to work on an H11DSi-NT, so it might be worth a try?
@qwertviop Will look more into this modding part after I've exhausted the supermicro support option.
I think this is the same as I linked in the forum thread, no?
Also H11DSi is not the same as H11DSi-NT and in one of the latest version they added more validation and rollback prevention. So I'm not sure I'm even able to flash a self-modified firmware on my board as easily as it used to be.
Klaus Frank
davidak
Felix Pehla