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[EN] sddm login screen flashes and disappears before i can enter anything

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mdmarmer:
sddm login screen flashes and disappears before i can enter anything
AMD graphics older dell desktop
lxqt siduction system
after i did the d-u, both firefox and chrome abended as soon as i tried to start them
then after reboot i was unable to login to gui

hendrikL:
Uh, what does startx telling you? Any log files? Intel, AMD, Nvidia?
Xorg broken or using Wayland (ok not really because of lxqt).
Ah. there where a bunch of qt packages in the last d-u.
Questions over questions.

mdmarmer:
I decided a reinstall would be easier.  I installed from the latest siduction testbuild of lxqt, added a few packages (streamtuner2, vlc, mpv, opera, chrome,hexchat, kpat, and meteo-qt).  I did d-u in init 3 before restoring my data.  Unfortunately the same thing happened.  I probably should have kept the system and looked at startx log. However, I installed mxlinux.  I still have not restored the data. This is an older Dell desktop with intel i5 and AMD graphics.  Yesterday there were about 22 upgrades including sddm if I remember.  On the original system I had done the xorg and i think also the qt upgrades days ago with no problem.

RanSong:
Hello,
I have the same problem. After the update on 16.02. Firefox could no longer be started. After restarting, the login screen popped up briefly and then went black.  Logging in via xrdp and console is still possible.

I suspect that it has to do with the graphics card driver from AMD, because there were no problems on my laptop with an Intel graphics card.

Graphics card: AMD FirePro W5000

The following packages have been updated (excerpt from /var/log/apt/history.log) :

--- Quote ---Start-Date: 2024-02-16  17:50:23
Commandline: apt full-upgrade
Upgrade: libglib2.0-dev-bin:amd64 (2.78.3-2, 2.78.4-1), ovmf:amd64 (2023.11-6, 2023.11-7), bind9-host:amd64 (1:9.19.19-1, 1:9.19.21-1), libglx-mesa0:amd64 (23.3.5-1, 24.0.1-1), libglx-mesa0:i386 (23.3.5-1, 24.0.1-1), libatkmm-1.6-1v5:amd64 (2.28.3-2+b1, 2.28.4-1), libgl
ib2.0-bin:amd64 (2.78.3-2, 2.78.4-1), libglib2.0-dev:amd64 (2.78.3-2, 2.78.4-1), libgbm1:amd64 (23.3.5-1, 24.0.1-1), libgbm1:i386 (23.3.5-1, 24.0.1-1), cockpit-networkmanager:amd64 (310.1-1, 311-1), libgbm-dev:amd64 (23.3.5-1, 24.0.1-1), libcbor0.10:amd64 (0.10.2-1.1, 0
.10.2-1.2), cockpit-bridge:amd64 (310.1-1, 311-1), qemu-efi-aarch64:amd64 (2023.11-6, 2023.11-7), liblua5.4-0:amd64 (5.4.6-2, 5.4.6-3), adwaita-icon-theme:amd64 (46~beta-1, 46~beta-2), libgegl-common:amd64 (1:0.4.46-4, 1:0.4.48-1), gvfs-fuse:amd64 (1.52.2-1, 1.53.90-1),
 gvfs-common:amd64 (1.52.2-1, 1.53.90-1), libgegl-0.4-0:amd64 (1:0.4.46-4+b1, 1:0.4.48-1), gvfs-libs:amd64 (1.52.2-1, 1.53.90-1), libglib2.0-data:amd64 (2.78.3-2, 2.78.4-1), python3-scipy:amd64 (1.10.1-10, 1.11.4-1), qemu-efi-arm:amd64 (2023.11-6, 2023.11-7), libopenh26
4-7:amd64 (2.4.0+dfsg-1, 2.4.1+dfsg-1), mesa-va-drivers:amd64 (23.3.5-1, 24.0.1-1), mesa-va-drivers:i386 (23.3.5-1, 24.0.1-1), libgl1-mesa-dev:amd64 (23.3.5-1, 24.0.1-1), libxi-dev:amd64 (2:1.8-1+b1, 2:1.8.1-1), libgl1-mesa-dri:amd64 (23.3.5-1, 24.0.1-1), libgl1-mesa-dr
i:i386 (23.3.5-1, 24.0.1-1), libosmesa6:amd64 (23.3.5-1, 24.0.1-1), libosmesa6:i386 (23.3.5-1, 24.0.1-1), libegl1-mesa-dev:amd64 (23.3.5-1, 24.0.1-1), libpangomm-1.4-1v5:amd64 (2.46.3-1, 2.46.4-1), liburi-perl:amd64 (5.26-1, 5.27-1), python3-pexpect:amd64 (4.9-1, 4.9-2)
, dnsmasq-base:amd64 (2.90-1, 2.90-2), texlive-latex-base:amd64 (2023.20231207-1, 2023.20240207-1), gvfs:amd64 (1.52.2-1, 1.53.90-1), gvfs-daemons:amd64 (1.52.2-1, 1.53.90-1), bind9-dnsutils:amd64 (1:9.19.19-1, 1:9.19.21-1), mesa-vulkan-drivers:amd64 (23.3.5-1, 24.0.1-1
), mesa-vulkan-drivers:i386 (23.3.5-1, 24.0.1-1), libjansi-java:amd64 (2.4.0-2, 2.4.1-2), libbudgie-plugin0:amd64 (10.8.2-2, 10.8.2-3), libavif16:amd64 (1.0.3-1, 1.0.4-1), libavif16:i386 (1.0.3-1, 1.0.4-1), r-cran-survival:amd64 (3.5-7-1, 3.5-8-1), libglapi-mesa:amd64 (
23.3.5-1, 24.0.1-1), libglapi-mesa:i386 (23.3.5-1, 24.0.1-1), libglib2.0-0:amd64 (2.78.3-2, 2.78.4-1), libglib2.0-0:i386 (2.78.3-2, 2.78.4-1), libbabl-0.1-0:amd64 (1:0.1.106-3+b2, 1:0.1.108-1), bind9-libs:amd64 (1:9.19.19-1, 1:9.19.21-1), code:amd64 (1.86.1-1707298119,
1.86.2-1707854558), texlive-base:amd64 (2023.20231207-1, 2023.20240207-1), libegl-mesa0:amd64 (23.3.5-1, 24.0.1-1), gstreamer1.0-libav:amd64 (1.22.9-1, 1.22.10-1), mesa-vdpau-drivers:amd64 (23.3.5-1, 24.0.1-1), mesa-vdpau-drivers:i386 (23.3.5-1, 24.0.1-1), nss-plugin-pe
m:amd64 (1.1.0-1, 1.1.0+1-1), dnsutils:amd64 (1:9.19.19-1, 1:9.19.21-1), libxi6:amd64 (2:1.8-1+b1, 2:1.8.1-1), libxi6:i386 (2:1.8-1+b1, 2:1.8.1-1), texlive-latex-recommended:amd64 (2023.20231207-1, 2023.20240207-1)
End-Date: 2024-02-16  17:51:10

--- End quote ---
Many thanks for your help
RanSong


PS Sorry about this English, it's not my language. I would prefer German.

Edit, sorry made it readable, hendrikL

hendrikL:
mh, xorg.log and maybe grep for errors in journalctl or dmesg.

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