Reply to topic

Unable to login to Wayland session

vishalrao
Registered Member
Posts
154
Karma
0
OS

Unable to login to Wayland session

Mon Jan 09, 2017 6:15 am
Hello,

I'm running the latest dev unstable version and when I pick wayland session during login, I just get a momentary blank screen and it returns to sddm login screen. dmesg shows a crash/segfault in libQtCore and a few other places (will post a stacktrace shortly) and some calls into intel i915_bpo (backported) driver apparently.

I have a skylake i5-6500 cpu with only using the igpu and a while back neon seemed to have uninstalled intel driver in favour of modesetting using some arbiter and intel-native-modesetting packages for Xorg - wondering if this is related to my problem.

Anyone else having this issue or are you able to currently use wayland session (at least log in to desktop) ?

Thanks!


"Thou shalt not follow the null pointer for at its end madness and chaos lie."
vishalrao
Registered Member
Posts
154
Karma
0
OS
I don't seem to be getting the stacktrace in dmesg at the moment just a few lines mentioning segault, like this:

Code: Select all
[ 2176.373914] kactivitymanage[6131]: segfault at 7f7410579cb0 ip 00007f740001d5c1 sp 00007ffc96ac0418 error 4 in libQt5Sql.so.5.7.0[7f7400007000+45000]
[ 2176.374904] QDBusConnection[6188]: segfault at 7f199c0a8ff0 ip 00007f19aef8e957 sp 00007f19976169e0 error 4 in libQt5Core.so.5.7.0[7f19aecd9000+4c6000]
[ 2185.511459] kwin_wayland[6447]: segfault at 2df5b40 ip 00007fb56fbc5d78 sp 00007ffcaa3a8d50 error 4 in libQt5Core.so.5.7.0[7fb56f8e5000+4c6000]
[ 2185.705882] sddm-greeter[6397]: segfault at 30 ip 00007ff20ce95b30 sp 00007ffcf3c87008 error 4 in libKF5CoreAddons.so.5.30.0[7ff20ce61000+90000]


"Thou shalt not follow the null pointer for at its end madness and chaos lie."
vishalrao
Registered Member
Posts
154
Karma
0
OS
FYI, I also just now downloaded and booted live session of the Neon Plasma Wayland ISO daily (dev unstable) image, by default it auto logs into X session and logout and attempt to log back in with wayland session selected and I get the same errors/issue.


"Thou shalt not follow the null pointer for at its end madness and chaos lie."
User avatar subdiff
Registered Member
Posts
59
Karma
0
OS
Thanks for testing Wayland on Dev Unstable. The issue should be solved with https://phabricator.kde.org/R108:b868df ... fb8aa99baa

Atleast I had the same problem in the last weeks and it now works again. Should hit the Neon repos in a few hours.
vishalrao
Registered Member
Posts
154
Karma
0
OS
So a few days later and looks like that hurdle is overcome (resolved) and able to use (at least log in now) wayland desktop :-) Few minutes of usage (few apps like FF browser, konsole etc) seems to be stable. Will now continue to log in to wayland by default!

BTW, no longer using Intel iGPU, in the past few days got a 4k (LG 27UD68) monitor and an AMD RX 460 GPU. Had to install the ubuntu hardware enablement kernel (HWE edge package) and also the Xorg Edgers PPA to get proper built-in "amdgpu" driver support but things are quite good now.


"Thou shalt not follow the null pointer for at its end madness and chaos lie."
User avatar subdiff
Registered Member
Posts
59
Karma
0
OS
Nice! I've a RX470 myself in use with my Neon. Works great (aswell with kernel 4.8 and the ppa you mentioned)!

 
Reply to topic

Bookmarks



Who is online

Registered users: Baidu [Spider], Bing [Bot], boospy007, claydoh, Exabot [Bot], Google [Bot], nshiell, Sogou [Bot], TG