Hello, Since recently i was using kaos, and i occasionally tried the wayland session to watch the progresses. Since i change my graphic card (4950 -> fury), if i log to the wayland session, i just get a quick black screen and it go back to sddm. Then i move to kde neon and i install every wayland related packages. I have the same problem if i go to wayland session. I tried to look at ksystemlog, and i presume the problem come from this : kwin_wayland[5360]: segfault at 968 ip 00007f3fe2a954fa sp 00007ffe995fca90 error 4 in libX11.so.6.3.0[7f3fe2a6d000+135000] Also if i log out and kill sddm, wayland session work if i run this command : kwin_wayland --libinput --xwayland "plasmashell --platform wayland" Reproducible: Always kde neon stable with padoka PPA amdgpu + radeonsi sapphire fury evga x79 sli + core i7 3820
Please provide a backtrace of the crash. Without we are not able to investigate. All we have now is that it crashed somewhere in libX11 which is not a very helpful information as we use that a few times in KWin and in libraries. Maybe check whether coredumpctl caught the crash.
marc@marc-PC:~$ coredumpctl info 1666 PID: 1666 (kwin_wayland) UID: 1000 (marc) GID: 1000 (marc) Signal: 11 (SEGV) Timestamp: ven. 2016-10-21 00:46:06 CEST (15min ago) Command Line: /usr/bin/kwin_wayland --xwayland --libinput --exit-with-session=/usr/lib/x86_64-linux-gnu/libexec/startplasma Executable: /usr/bin/kwin_wayland Control Group: /user.slice/user-1000.slice/session-3.scope Unit: session-3.scope Slice: user-1000.slice Session: 3 Owner UID: 1000 (marc) Boot ID: 2c361b42820c477d800e5b98113b926a Machine ID: 6ac3536027bb42158f9245cae0ea13ff Hostname: marc-PC Coredump: /var/lib/systemd/coredump/core.kwin_wayland.1000.2c361b42820c477d800e5b98113b926a.1666.1477003566000000000000.xz Message: Process 1666 (kwin_wayland) of user 1000 dumped core. Stack trace of thread 1666: #0 0x00007f24697d54fa XInternAtom (libX11.so.6) #1 0x00007f245a1eb8ca n/a (libkvantum.so) #2 0x00007f247240e4ea n/a (n/a)
Created attachment 101672 [details] kwin_wayland dump file
hmm the core doesn't give me anything useful. What is interesting is the: XInternAtom KWin code does not have any XInternAtom call anymore which means that was from a library or plugin that kwin loads. Any third party widget style or window decoration?
reopening to investigate the XInternAtom usage
It seems i find the problem. I am using kvantum arc theme and forget to turn it off. I use the breeze complete set and now i can login to my wayland session. However it seems that this problem wasn't related to kvantum in the past. When i install kde neon on my system i tried the wayland session with breeze and it crash the same way, it seems recent update correct the problem. Anyway sorry for the false report
Thanks for the update