plasma update 5.11.5 sddm a black screen

vastchen · n00b Joined: 22 Apr 2016 Posts: 55

i update plasma to 5.11.5 only get a black screen and the white mouse .

now i emerge --depclean than

fedeliallalinea · Posted: Fri Jan 19, 2018 1:55 pm Post subject:

asturm · Developer Joined: 05 Apr 2007 Posts: 8936

Apart from that, the black screen issue is 90% an sddm issue, not Plasma. Try downgrade to 0.15.0.

vastchen · n00b Joined: 22 Apr 2016 Posts: 55

vastchen · n00b Joined: 22 Apr 2016 Posts: 55

vastchen · n00b Joined: 22 Apr 2016 Posts: 55

the build log cat /var/tmp/portage/kde-plasma/plasma-workspace-5.11.5/temp/build.log

iandoug · Posted: Mon Jan 22, 2018 12:13 pm Post subject:

wrc1944 · Posted: Fri Jan 26, 2018 2:28 am Post subject:

Same problems here, on 3 profile 17.0 ~amd64 Installs. One of them can't get even get a DM (sddm or lightdm) up, but can do an emerge -e @system and @world, has networking, etc, with all emerge/portage functions OK.

Seems to be a kde plasma along with no xorg-x11. (No screen found) Tried lots of stuff for two says now. kernel rebuild, all sorts of x11 settings & rebuilding various items even after the @ world rebuild. Nothing works.

The other two installs will so far get sddm up, and run lxde or xfce4 OK. Seems to be an sddm/xorg/kde plasma/qt complex problem that so far defies my understanding. Maybe the last kde updates would like gcc-7.3.0 or another qt update?
What about downgrading kde-plasma/sddm-kcm along with the sddm downgrade mentioned? Really annoying having all three systems having problems. :roll:

Really strange is the @world rebuild was flawless.

UPDATE: Some Progress.
On my x370 box, I have two Gentoo's. On the one which I could get into with fxce4, I created a new user, and rebooted into kde plasma with sddm. That one created a new set of config files, and is working very good, albeit needed to do my usual custom looks and configuring routines.

I then got into the other gentoo on sda6 which I couldn't get sddm or lightdm working, and was limited to VT's by doing the following:

From the now working sda11 Gentoo kde GUI I went into the sda6 /home/wrc/.config and removed the four "plasma" config files, and then rebooted (out of the good sda11 Main Gentoo) and into the sda6 Gentoo which now brought up lightdm and I was able to go into kde plasma, Finally!

Needs some configuring work, and likely I'll do a full rebuild on both systems, but it seems this is at least on my systems definitely a plasma related problem. Perhaps old .config files are really outdated. The "new user" on the other sda11 system was pristine, and I also removed the 4 plasma files belonging to the my main sda11 user, and he too can get plasma with sddm, but it isn't "pristine" (a few missing icons, etc. Maybe just do a full qt/kde rebuild and see if that works, or maybe even easier just remove all .config kde files, and reboot. Anyway, I was going nuts for two days.
_________________
Main box- AsRock x370 Gaming K4
Ryzen 7 3700x, 3.6GHz, 16GB GSkill Flare DDR4 3200mhz
Samsung SATA 1000GB, Radeon HD R7 350 2GB DDR5
OpenRC Gentoo ~amd64 plasma, glibc-2.36-r7, gcc-13.2.1_p20230304
kernel-6.8.4 USE=experimental python3_11

thumper · Guru Joined: 06 Dec 2002 Posts: 552 Location: Venice FL

I deleted the contents of /var/lib/sddm/ and the segfault stopped and sddm started working again.

Had already gone full circle by that time and had the latest sddm and the kde plasma beta installed again.

Desktop was blown up, cleaned out a bunch of desktop related files from ~/.config and a few from ~/.local and got a desktop back.

In case it helps anyone.

YMMV

George