[SOLVED] LXQt does no longer start after pacman -Syu on pi2

[neXusPi2]

Since the last update via pacman -Syu the LXQt desktop environment does no longer start on my rpi2. I'm using sddm as login manager and have configured it to auto-login my user. Now, after the update, I don't get the LXQt desktop but the sddm login-screen instead. When I enter my password to manually login then the screen gets blank and after some seconds I see the sddm login-screen again.

With the last update some core components are updated, for example the Qt framework is updated to Qt5.5.0.

Does anyone have an idea what I can do?

[WarheadsSE]

On updating my ODROID-C1 install toiday I found that my LXQt session was also dead , although I use LXDM for my display manager, after a bit of digging I realised pulseaudio was a red-herring (there were pulseaudio errors in the journel) I located that it was the QT5 upgrade at fault.

My fix (and you are free to try at your own risk) was to
$this->bbcode_second_pass_code('', '
su
cd /var/cache/pacman/pkg/
pacman -U qt5-base-5.4.2-1-armv7h.pkg.tar.xz qt5-xmlpatterns-5.4.2-1-armv7h.pkg.tar.xz qt5-declarative-5.4.2-1-armv7h.pkg.tar.xz qt5-connectivity-5.4.2-1-armv7h.pkg.tar.xz qt5-enginio-5.4.2-1-armv7h.pkg.tar.xz qt5-graphicaleffects-5.4.2-1-armv7h.pkg.tar.xz qt5-imageformats-5.4.2-1-armv7h.pkg.tar.xz qt5-location-5.4.2-1-armv7h.pkg.tar.xz qt5-multimedia-5.4.2-1-armv7h.pkg.tar.xz qt5-sensors-5.4.2-1-armv7h.pkg.tar.xz qt5-webchannel-5.4.2-1-armv7h.pkg.tar.xz qt5-webkit-5.4.2-1-armv7h.pkg.tar.xz qt5-script-5.4.2-1-armv7h.pkg.tar.xz qt5-quick1-5.4.2-1-armv7h.pkg.tar.xz qt5-quickcontrols-5.4.2-1-armv7h.pkg.tar.xz qt5-serialport-5.4.2-1-armv7h.pkg.tar.xz qt5-svg-5.4.2-1-armv7h.pkg.tar.xz qt5-translations-5.4.2-1-armv7h.pkg.tar.xz qt5-tools-5.4.2-1-armv7h.pkg.tar.xz qt5-wayland-5.4.2-1-armv7h.pkg.tar.xz qt5-websockets-5.4.2-1-armv7h.pkg.tar.xz qt5-x11extras-5.4.2-1-armv7h.pkg.tar.xz
')

you may have other qt5 packages that may also need to be downgraded (check the pacman log to seee what was upgraded)

hope this helps, Im off to pacman.conf get qt5 ignored for a while... lol

Jase

[neXusPi2]

Ups, my bad! LXQt runs fine with latest packages from ARCH Linux ARM repo, even with Qt5.5.0. My SD card was full, after removing some packages in /var/cache/pacman/pkg everything works now