Digging in a bit it appears to be something going on between SDDM, the nVidia drivers and ACPI. I don't have the time to go much further right now so I'll run it with the Nouveau drivers until Dell release the Developer edition and see how they do it! :)

Thomas

On Thu, Aug 9, 2018 at 10:15 PM Ed Greshko <ed.greshko@greshko.com> wrote:
On 08/10/18 12:23, Thomas Letherby wrote:
>
> I'm trying to install the KDE spin on a Dell XPS 15 and I can't seem to get the
> nVidia drivers to install.
>
> I installed via a USB stick, and I had to add the dis_ucode_ldr switch to the boot
> options to get it to load and change to ACIP rather than RAID for the drive, but it
> installed without issue after that and seems to be working fine with the Noveau
> drivers, however I cannot seem to get nVidia drivers to install correctly. 
>
> I'm trying to use the workstation RPMFusion repo, and they seem to install OK, but
> after trying the guides here:
>
> https://rpmfusion.org/Howto/NVIDIA
> https://fedoramagazine.org/install-nvidia-gpu/
> (I don't have the install drivers option for this one, I think that's Gnome
> specific isn't it?)
>
> I get similar results, namely a blank screen at login, which persists for more than
> 10 minutes, so I don't think it's still building the drivers.
>
> If I switch to another tty I can startx and it will load KDE. It's like it's not
> loading the login screen.
>
> I'm still searching through the logs but I've not found a smoking gun yet, but just
> in case, has anyone got this to work, and if so how did you do it?


You say you can switch to another tty and using startx you'll get KDE up and running,
yes?   If that is the case then the problem is not the nVidia drivers as they are
being used quite nicely in that instance.  You can verify this by issuing "lsmod |
grep nvidia" and it would generate an output similar to this in konsole.

[egreshko@meimei Season-4]$ lsmod | grep nvidia
nvidia_drm             45056  7
nvidia_modeset       1093632  22 nvidia_drm
nvidia              14061568  1057 nvidia_modeset
drm_kms_helper        196608  1 nvidia_drm
drm                   458752  10 drm_kms_helper,nvidia_drm
ipmi_msghandler        57344  2 ipmi_devintf,nvidia

If all this checks out, it would seem your problem is with the display manager.  What
do you get for "systemctl status sddm"

FWIW, I'm running F28/KDE with nVidia RPMFusion drivers just fine with GeForce GTX
660 HW.

--
Conjecture is just a conclusion based on incomplete information. It isn't a fact.

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