[SOLVED] - KDE Plasma 5 and SDDM - no login, only black/grey screen

summit69 · 2016-12-30 20:33:43

Hi!

On a fresh arch install, I installed xorg and nvidia drivers and all was working when i tested using startx. Here are the exact commands I used.

pacman -S xorg-server xorg-xinit xorg-utils xorg-server-utils mesa
pacman -S xorg-twm xterm xorg-xclock
pacman -S xf86-input-synaptics
pacman -S nvidia nvidia-libgl xorg-xrandr
startx

That would show the xterm windows.

Now, I wanted KDE Plasma 5, so I installed using the below.

pacman -S plasma sddm sddm-kcm
systemctl enable sddm

Modified target

systemctl set-default graphical.target

Upon rebooting, I was presented with the black/grey screen, no login prompt. If I open another teminal (Ctrl+Alt+F2), sddm service would show running.

If I were to start at runlevel 3 then startx, I am presented with the xterm window. Of course, sddm is disabled. So when I exit the xterm windows and then start sddm (systemctl start sddm), it will just go back to the same black/grey screen.

Any ideas what to check?

Thanks.

Last edited by summit69 (2017-01-02 18:58:09)

loqs · 2016-12-30 20:43:54

xorg.log and as you mentioned in your previous thread you were going to use nvidia optimus the xorg.conf as well.

summit69 · 2016-12-30 21:17:01

Let's take things one at a time.

The guide instructs the installation of nvidia, nvidia-libgl and xorg-xrandr. I did, and the next step was to edit /etc/X11/xorg.conf - which is missing. I assumed this should have been fine if I can startx and the terminal windows will open.

Did I miss something?

loqs · 2016-12-30 21:23:31

Yes you can do that much as you will only be using the integrated GPU without hardware acceleration from libgl and the nvidia GPU will be inactive.
Completing the rest of the steps should resolve the issue. Also in future please note when you have stopped following or deviated from the wiki instructions provided as I assumed you had followed it through to the end.

ugjka · 2016-12-30 21:33:05

This is known issue https://bbs.archlinux.org/viewtopic.php?id=220562

summit69 · 2017-01-02 18:57:34

Deep down the Optimus page is a section directing to Bumblebee. I read on and followed the Bumblebee guide, then reinstalled xorg, plasma, and sddm, and viola!plasma loaded properly.

This is my first experience with Arch, and so far I learned a lot just because it wasn't a click-click-next-done installation. Looking forward to more learning with Arch!

PS. The wiki is really impressive, kudos to those people who maintain them!

Optirun output..

[santi@archlinux ~]$ optirun glxspheres64
Polygons in scene: 62464 (61 spheres * 1024 polys/spheres)
Visual ID of window: 0x20
Context is Direct
OpenGL Renderer: GeForce 920M/PCIe/SSE2
91.364227 frames/sec - 79.644024 Mpixels/sec
91.222991 frames/sec - 79.520905 Mpixels/sec
89.289427 frames/sec - 77.835379 Mpixels/sec
90.330777 frames/sec - 78.743145 Mpixels/sec
90.993372 frames/sec - 79.320743 Mpixels/sec
91.342373 frames/sec - 79.624973 Mpixels/sec
92.095273 frames/sec - 80.281292 Mpixels/sec
90.176879 frames/sec - 78.608989 Mpixels/sec
90.248618 frames/sec - 78.671525 Mpixels/sec
91.559220 frames/sec - 79.814004 Mpixels/sec
91.537446 frames/sec - 79.795023 Mpixels/sec
[santi@archlinux ~]$

Cheers!

Arch Linux

#1 2016-12-30 20:33:43

[SOLVED] - KDE Plasma 5 and SDDM - no login, only black/grey screen

#2 2016-12-30 20:43:54

Re: [SOLVED] - KDE Plasma 5 and SDDM - no login, only black/grey screen

#3 2016-12-30 21:17:01

Re: [SOLVED] - KDE Plasma 5 and SDDM - no login, only black/grey screen

#4 2016-12-30 21:23:31

Re: [SOLVED] - KDE Plasma 5 and SDDM - no login, only black/grey screen

#5 2016-12-30 21:33:05

Re: [SOLVED] - KDE Plasma 5 and SDDM - no login, only black/grey screen

#6 2017-01-02 18:57:34

Re: [SOLVED] - KDE Plasma 5 and SDDM - no login, only black/grey screen

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