SDDM Black Screen w/cursor
By now this is a known issue, but I think it's worth opening regardless.
I wasn't the only one to experience this, and it seems to be an issue specifically with nvidia (apparently not nvidia exclusive), but every so often (pretty much every other boot), whenever it reaches the point where SDDM would load and allow me to login, it shows a black screen with only the cursor being displayed.
Switching from Wayland to X11 didn't seem to fix this in my experience, as I had rebooted whilst using the Xorg session and still got the issue. Whenever this happens it forces me to push the shutdown button (although not hold as SDDM is respectful and goes on its own) and shut it down and turn it back on, which fixes it.
I've noticed in normal boots that work that it does still show the black screen with cursor, but only for a second before the wallpaper and the rest of the SDDM components show up and enable me to login, so this leads me to believe it might be somewhere in the middle of SDDM initialization?
In any case, I'll leave it open for discussion and I'm happy to provide any further info or test suggestions.
58 Replies
It's not just nvidia
oh, it isn't? I'll edit it
I have a 7900 xtx and 7950x
and it still happens
righto
happened to me on my asus laptop (all-amd) just now
and my desktop with 6950xt yesterday
this doesn't occur for me on ublue kinoite builds
(non-bazzite)
wait this got sent into the wrong channel sorry 😅
oh, gotcha
it was your other thread i was meant to send it
@nickname
here's a log from my last boot where I had this sddm black screen issue, as well as long shutdown time (from another issue/thread) https://paste.centos.org/view/d0ed3e25
and one made from within a tty in the same boot that led to a black screen sddm https://paste.centos.org/view/6ef3d012
also a dmseg from within the tty in that black sddm login, if it helps at all
(didn't fpaste at the time, only output to .txt file)
+1
before i lose my mind
for consistency sake
what is your GPU vendor
AMD, Nvidia, or Intel?
AMD
💀
i don't understand any of this anymore
thank you for telling me
there's somehting very funny with our fedora 40 builds
For me I get a black sreen 5/6 boots
what's your CPU/GPU
With cursor
yup this sounds all too familiar
Ryzen 5600x and Vega 56
ok so it's not even a dedicated GPU
https://discord.com/channels/1072614816579063828/1233580367252946944
It is a dedicated gpu
Just old
It does happen on my 7900 xtx 7950x system
I could unplug the 7900 xtx and boot with just the 7950x igpu
see if that changes anything
probably wont
would removing the power plugs be enough or would I have to remove it from the pcie slot
especially since nvidia hardware is affected
dont even worry about it
ah
technically it boots using the igpu if I have my monitors plugged into the motherboard display ports
instead of the gpus
we've had issues previously with Nvida hybrid laptop builds that wouldn't go past first boot until plugged into a monitor lol
that was fixed though
long before 40
What kind of cursor? What shape?
The mouse cursor
it's just the regular mouse cursor
Like it looks like the standard pointer or is it an x?
I've had both, seems like a position thing, but it's the adwaita cursor anyway
If you see an x that is the default cursor for xorg
huh, alright
don't think that should indicate much? not sure though
I mean you did say you set it to login to x11 automatically, right?
It also uses the adwaita cursor for me on Wayland
adwaita cursor is the default cursor
set in /usr/share/icons/default/index.theme
SDDM for me has always just used adwaita
iirc
yepp, it doesn't read its config file and defaults to the default system icon
I haven't experienced this issue again as of today. Anyone else?
it hasn't happened to me anymore either
spoke too soon, happened to me again
Happened to me as well. Also got errors reinstalling bazzite as well as fedora kinote.
amd/amd system
wait you're getting the same issue with Kinoite too?
that's new
I got the same install error. Not the same sddm error
Although my steam deck and my BIL rog ally does not get this sddm error. But that could due with it launching into gamemode by default
so the installer error?
Assuming x11 support is installed on your system, anyone tried setting the display server for sddm itself?
You can create a conf file in
/etc/sddm.conf.d/ with the contents
While not exactly the same, this solved my issues with Kinoite SDDM showing a black screen in VMs without 3D acceleration enabled. I wonder if there is something up when SDDM in wayland mode.It originally installed successfully. But then when I got that sddm error it refused to reinstall.
iirc wayland cannot initialize without 3d acceleration
only nvidia image has x11
Possibly unrelated, but screen blanking also causes things to be a bit messed up.
Chiming in to say this is happening to me on Bazzite as well, Ryzen 7 5700U APU. Can pull logs if needed.
for the sake of science idm fresh installing kinoite and checking if problems do happen and see what logs can be pulled, if that might help
ty
Happening again today. Every reboot it comes back
happened with me too, i'm using amd ryzen 5 4600G integrated graphics, I booted into bazzite 39 and it worked normally, then I rolled back and updated again, now I booted in bazzite 40 without the issue, although it might happen again(sorry for bad english)