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Hello, sorry if sometimes i don't speak english very well, i'm french.
I have problem ! I have installed KDE Plasma and sddm. When i launch sddm manually with :
systemctl start sddm
it's work, but when i have enabled sddm service with:
systemctl enable sddm
i have black screen, why ???
Problem with sddm compatibility ?
Last edited by Zohran (2017-03-12 22:05:49)
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Try putting your video module in the initramfs. I've seen things like this when the system starts up faster than the video driver can be ready.
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How i do that ?
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How did you install Arch?
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Ah I understood, sorry I read too fast x)
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The same happened to me, and I've been using sddm for a long time. I think a recent update broke sddm. I am not yet sure which exact packages caused it.
So far I have tried recompiling sddm against current libraries. It does not help.
Mar 13 13:01:34 ArchDesktop systemd-coredump[572]: Process 511 (sddm-greeter) of user 996 dumped core.
Stack trace of thread 511:
#0 0x00007feff9328a97 n/a (libGLdispatch.so.0)
#1 0x00007feff9328b58 n/a (libGLdispatch.so.0)
#2 0x00007feff93290de n/a (libGLdispatch.so.0)
#3 0x00007feff9328cfd n/a (libGLdispatch.so.0)
#4 0x00007feff93280f8 __glDispatchGetProcAddress (libGLdispatch.so.0)
#5 0x00007feff9af5c61 glXGetProcAddress (libGLX.so.0)
#6 0x00007feff1dae44d n/a (libqxcb-glx-integration.so)
#7 0x00007feffe9f215d n/a (libQt5Gui.so.5)
#8 0x00007feffe9f5e18 n/a (libQt5Gui.so.5)
#9 0x00007feffe9f5f48 n/a (libQt5Gui.so.5)
#10 0x00007feffe9f6158 _ZN16QOpenGLFunctionsC2EP14QOpenGLContext (libQt5Gui.so.5)
#11 0x00007feffe7261c0 _ZNK14QOpenGLContext9functionsEv (libQt5Gui.so.5)
#12 0x00007fefffc844f4 _ZN23QSGDefaultRenderContext10initializeEPv (libQt5Quick.so.5)
#13 0x00007fefffc784b7 n/a (libQt5Quick.so.5)
#14 0x00007fefffc78b25 n/a (libQt5Quick.so.5)
#15 0x00007feffe6f8d05 _ZN7QWindow5eventEP6QEvent (libQt5Gui.so.5)
#16 0x00007fefffce54a5 _ZN12QQuickWindow5eventEP6QEvent (libQt5Quick.so.5)
#17 0x00007feffe19f2da _ZN16QCoreApplication6notifyEP7QObjectP6QEvent (libQt5Core.so.5)
#18 0x00007feffe19f440 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5)
#19 0x00007feffe6edd2d _ZN22QGuiApplicationPrivate18processExposeEventEPN29QWindowSystemInterfacePrivate11ExposeEventE (libQt5Gui.so.5)
#20 0x00007feffe6ee93d _ZN22QGuiApplicationPrivate24processWindowSystemEventEPN29QWindowSystemInterfacePrivate17WindowSystemEventE (libQt5Gui.so.5)
#21 0x00007feffe6ca44b _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Gui.so.5)
#22 0x00007feff5e889e0 n/a (libQt5XcbQpa.so.5)
#23 0x00007feff9d6b5a7 g_main_context_dispatch (libglib-2.0.so.0)
#24 0x00007feff9d6b810 n/a (libglib-2.0.so.0)
#25 0x00007feff9d6b8bc g_main_context_iteration (libglib-2.0.so.0)
#26 0x00007feffe1f404f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
#27 0x00007feffe19d89a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
#28 0x00007feffe1a5de4 _ZN16QCoreApplication4execEv (libQt5Core.so.5)
#29 0x000000000041617f main (sddm-greeter)
#30 0x00007feffd5f4511 __libc_start_main (libc.so.6)
#31 0x00000000004162ba _start (sddm-greeter)
Stack trace of thread 531:
#0 0x00007feffd6b667d poll (libc.so.6)
#1 0x00007feff9d6b7a6 n/a (libglib-2.0.so.0)
#2 0x00007feff9d6b8bc g_main_context_iteration (libglib-2.0.so.0)
#3 0x00007feffe1f404f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
#4 0x00007feffe19d89a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
#5 0x00007feffdfbfa73 _ZN7QThread4execEv (libQt5Core.so.5)
#6 0x00007feff5975125 n/a (libQt5DBus.so.5)
#7 0x00007feffdfc46d8 n/a (libQt5Core.so.5)
#8 0x00007feffbd202e7 start_thread (libpthread.so.0)
#9 0x00007feffd6c054f __clone (libc.so.6)
Stack trace of thread 512:
#0 0x00007feffd6b667d poll (libc.so.6)
#1 0x00007fefff8e68e0 n/a (libxcb.so.1)
#2 0x00007fefff8e8679 xcb_wait_for_event (libxcb.so.1)
#3 0x00007feff5e28239 n/a (libQt5XcbQpa.so.5)
#4 0x00007feffdfc46d8 n/a (libQt5Core.so.5)
#5 0x00007feffbd202e7 start_thread (libpthread.so.0)
#6 0x00007feffd6c054f __clone (libc.so.6)
Stack trace of thread 521:
#0 0x00007feffd6b667d poll (libc.so.6)
#1 0x00007feff9d6b7a6 n/a (libglib-2.0.so.0)
#2 0x00007feff9d6b8bc g_main_context_iteration (libglib-2.0.so.0)
#3 0x00007feffe1f404f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
#4 0x00007feffe19d89a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
#5 0x00007feffdfbfa73 _ZN7QThread4execEv (libQt5Core.so.5)
#6 0x00007fefff396025 n/a (libQt5Qml.so.5)
#7 0x00007feffdfc46d8 n/a (libQt5Core.so.5)
#8 0x00007feffbd202e7 start_thread (libpthread.so.0)
#9 0x00007feffd6c054f __clone (libc.so.6)
Last edited by Xinkai (2017-03-13 05:14:02)
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Hello, sorry if sometimes i don't speak english very well, i'm french.
I have problem ! I have installed KDE Plasma and sddm. When i launch sddm manually with :
systemctl start sddmit's work, but when i have enabled sddm service with:
systemctl enable sddm
i have black screen, why ???Problem with sddm compatibility ?
I think you've run into a breakage of sddm.
You can use another display manager for the time being until this issue is resolved.
1. Switch to another tty by pressing ctrl+alt+f2, and log in
2. Install another display manager: sudo pacman -S lxdm-gtk3
3. Disable and stop sddm:
sudo systemctl stop sddm
sudo systemctl disable sddm
4. Enable and start lxdm:
sudo system enable lxdm
sudo systemctl start lxdm
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I tested again, it still does not work. I tried with ligthdm and I have the same problem.In fact, for me to get sddm or lightdm to boot, I must first activate the service, reboot on command line mode and manually launch sddm or lightdm.
if i dont do that, after loading kernel, screen freeze and its impossible to open command line session or do anything...
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Same thing here, a great answer thank you Arch Forum, any suggestions of alternative display managers in the meantime?
I CAN confirm it was a recent update although I updated an awful lot!
The same happened to me, and I've been using sddm for a long time. I think a recent update broke sddm. I am not yet sure which exact packages caused it.
So far I have tried recompiling sddm against current libraries. It does not help.
Mar 13 13:01:34 ArchDesktop systemd-coredump[572]: Process 511 (sddm-greeter) of user 996 dumped core. Stack trace of thread 511: #0 0x00007feff9328a97 n/a (libGLdispatch.so.0) #1 0x00007feff9328b58 n/a (libGLdispatch.so.0) #2 0x00007feff93290de n/a (libGLdispatch.so.0) #3 0x00007feff9328cfd n/a (libGLdispatch.so.0) #4 0x00007feff93280f8 __glDispatchGetProcAddress (libGLdispatch.so.0) #5 0x00007feff9af5c61 glXGetProcAddress (libGLX.so.0) #6 0x00007feff1dae44d n/a (libqxcb-glx-integration.so) #7 0x00007feffe9f215d n/a (libQt5Gui.so.5) #8 0x00007feffe9f5e18 n/a (libQt5Gui.so.5) #9 0x00007feffe9f5f48 n/a (libQt5Gui.so.5) #10 0x00007feffe9f6158 _ZN16QOpenGLFunctionsC2EP14QOpenGLContext (libQt5Gui.so.5) #11 0x00007feffe7261c0 _ZNK14QOpenGLContext9functionsEv (libQt5Gui.so.5) #12 0x00007fefffc844f4 _ZN23QSGDefaultRenderContext10initializeEPv (libQt5Quick.so.5) #13 0x00007fefffc784b7 n/a (libQt5Quick.so.5) #14 0x00007fefffc78b25 n/a (libQt5Quick.so.5) #15 0x00007feffe6f8d05 _ZN7QWindow5eventEP6QEvent (libQt5Gui.so.5) #16 0x00007fefffce54a5 _ZN12QQuickWindow5eventEP6QEvent (libQt5Quick.so.5) #17 0x00007feffe19f2da _ZN16QCoreApplication6notifyEP7QObjectP6QEvent (libQt5Core.so.5) #18 0x00007feffe19f440 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5) #19 0x00007feffe6edd2d _ZN22QGuiApplicationPrivate18processExposeEventEPN29QWindowSystemInterfacePrivate11ExposeEventE (libQt5Gui.so.5) #20 0x00007feffe6ee93d _ZN22QGuiApplicationPrivate24processWindowSystemEventEPN29QWindowSystemInterfacePrivate17WindowSystemEventE (libQt5Gui.so.5) #21 0x00007feffe6ca44b _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Gui.so.5) #22 0x00007feff5e889e0 n/a (libQt5XcbQpa.so.5) #23 0x00007feff9d6b5a7 g_main_context_dispatch (libglib-2.0.so.0) #24 0x00007feff9d6b810 n/a (libglib-2.0.so.0) #25 0x00007feff9d6b8bc g_main_context_iteration (libglib-2.0.so.0) #26 0x00007feffe1f404f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #27 0x00007feffe19d89a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #28 0x00007feffe1a5de4 _ZN16QCoreApplication4execEv (libQt5Core.so.5) #29 0x000000000041617f main (sddm-greeter) #30 0x00007feffd5f4511 __libc_start_main (libc.so.6) #31 0x00000000004162ba _start (sddm-greeter) Stack trace of thread 531: #0 0x00007feffd6b667d poll (libc.so.6) #1 0x00007feff9d6b7a6 n/a (libglib-2.0.so.0) #2 0x00007feff9d6b8bc g_main_context_iteration (libglib-2.0.so.0) #3 0x00007feffe1f404f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007feffe19d89a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007feffdfbfa73 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007feff5975125 n/a (libQt5DBus.so.5) #7 0x00007feffdfc46d8 n/a (libQt5Core.so.5) #8 0x00007feffbd202e7 start_thread (libpthread.so.0) #9 0x00007feffd6c054f __clone (libc.so.6) Stack trace of thread 512: #0 0x00007feffd6b667d poll (libc.so.6) #1 0x00007fefff8e68e0 n/a (libxcb.so.1) #2 0x00007fefff8e8679 xcb_wait_for_event (libxcb.so.1) #3 0x00007feff5e28239 n/a (libQt5XcbQpa.so.5) #4 0x00007feffdfc46d8 n/a (libQt5Core.so.5) #5 0x00007feffbd202e7 start_thread (libpthread.so.0) #6 0x00007feffd6c054f __clone (libc.so.6) Stack trace of thread 521: #0 0x00007feffd6b667d poll (libc.so.6) #1 0x00007feff9d6b7a6 n/a (libglib-2.0.so.0) #2 0x00007feff9d6b8bc g_main_context_iteration (libglib-2.0.so.0) #3 0x00007feffe1f404f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007feffe19d89a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007feffdfbfa73 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007fefff396025 n/a (libQt5Qml.so.5) #7 0x00007feffdfc46d8 n/a (libQt5Core.so.5) #8 0x00007feffbd202e7 start_thread (libpthread.so.0) #9 0x00007feffd6c054f __clone (libc.so.6)
Last edited by bollothedragon (2017-03-15 10:32:11)
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Same thing here, a great answer thank you Arch Forum, any suggestions of alternative display managers in the meantime?
I auto login to kde without a display manager. Automatic login into Xorg without display manager. This works for me since I don't use any other desktop. If you log out, it brings you back to the command prompt. So you can sign in and launch a different desktop if you wish.
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nvidia + nouveau ?
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same at work. Intel chipset
sddm + lxqt
Tried with GDM but doesn't work either.
workaround for me is autologin in sddm
Last edited by Coolgeek (2017-03-15 21:12:54)
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Same thing. SDDM + Plasma + Radeon.
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I could confirm. This kind of bugs've started yesterday. It seems it's the same (or very similar to) as: https://github.com/sddm/sddm/issues/556
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Works on all of my systems nvidia and intel graphics. Have you made sure to update your microcodes? any journal/coredump output?
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Process 13199 (sddm-greeter) of user 996 dumped core.
Stack trace of thread 13199:
#0 0x00007ff0b9014a97 n/a (libGLdispatch.so.0)
#1 0x00007ff0b9014b58 n/a (libGLdispatch.so.0)
#2 0x00007ff0b90150de n/a (libGLdispatch.so.0)
#3 0x00007ff0b9014cfd n/a (libGLdispatch.so.0)
#4 0x00007ff0b90140f8 __glDispatchGetProcAddress (libGLdispatch.so.0)
#5 0x00007ff0b97e1c61 glXGetProcAddress (libGLX.so.0)
#6 0x00007ff0b1a4144d n/a (libqxcb-glx-integration.so)
#7 0x00007ff0be6de15d n/a (libQt5Gui.so.5)
#8 0x00007ff0be6e1e18 n/a (libQt5Gui.so.5)
#9 0x00007ff0be6e1f48 n/a (libQt5Gui.so.5)
#10 0x00007ff0be6e2158 _ZN16QOpenGLFunctionsC2EP14QOpenGLContext (libQt5Gui.so.5)
#11 0x00007ff0be4121c0 _ZNK14QOpenGLContext9functionsEv (libQt5Gui.so.5)
#12 0x00007ff0bf9704f4 _ZN23QSGDefaultRenderContext10initializeEPv (libQt5Quick.so.5)
#13 0x00007ff0bf9644b7 n/a (libQt5Quick.so.5)
#14 0x00007ff0bf964b25 n/a (libQt5Quick.so.5)
#15 0x00007ff0be3e4d05 _ZN7QWindow5eventEP6QEvent (libQt5Gui.so.5)
#16 0x00007ff0bf9d14a5 _ZN12QQuickWindow5eventEP6QEvent (libQt5Quick.so.5)
#17 0x00007ff0bde8b2da _ZN16QCoreApplication6notifyEP7QObjectP6QEvent (libQt5Core.so.5)
#18 0x00007ff0bde8b440 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5)
#19 0x00007ff0be3d9d2d _ZN22QGuiApplicationPrivate18processExposeEventEPN29QWindowSystemInterfacePrivate11ExposeEventE (libQt5Gui.so.5)
#20 0x00007ff0be3da93d _ZN22QGuiApplicationPrivate24processWindowSystemEventEPN29QWindowSystemInterfacePrivate17WindowSystemEventE (libQt5Gui.so.5)
#21 0x00007ff0be3b644b _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Gui.so.5)
#22 0x00007ff0b5b1b9e0 n/a (libQt5XcbQpa.so.5)
#23 0x00007ff0b9a575a7 g_main_context_dispatch (libglib-2.0.so.0)
#24 0x00007ff0b9a57810 n/a (libglib-2.0.so.0)
#25 0x00007ff0b9a578bc g_main_context_iteration (libglib-2.0.so.0)
#26 0x00007ff0bdee004f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
#27 0x00007ff0bde8989a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
#28 0x00007ff0bde91de4 _ZN16QCoreApplication4execEv (libQt5Core.so.5)
#29 0x000000000041629f main (sddm-greeter)
#30 0x00007ff0bd2e0511 __libc_start_main (libc.so.6)
#31 0x00000000004163ca _start (sddm-greeter)
Stack trace of thread 13200:
#0 0x00007ff0bd3a267d poll (libc.so.6)
#1 0x00007ff0bf5d28e0 n/a (libxcb.so.1)
#2 0x00007ff0bf5d4679 xcb_wait_for_event (libxcb.so.1)
#3 0x00007ff0b5abb239 n/a (libQt5XcbQpa.so.5)
#4 0x00007ff0bdcb06d8 n/a (libQt5Core.so.5)
#5 0x00007ff0bba0c2e7 start_thread (libpthread.so.0)
#6 0x00007ff0bd3ac54f __clone (libc.so.6)
Stack trace of thread 13202:
#0 0x00007ff0bba12756 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1 0x00007ff0ab63d55b n/a (radeonsi_dri.so)
#2 0x00007ff0ab63d287 n/a (radeonsi_dri.so)
#3 0x00007ff0bba0c2e7 start_thread (libpthread.so.0)
#4 0x00007ff0bd3ac54f __clone (libc.so.6)
Stack trace of thread 13206:
#0 0x00007ff0bd3a267d poll (libc.so.6)
#1 0x00007ff0b9a577a6 n/a (libglib-2.0.so.0)
#2 0x00007ff0b9a578bc g_main_context_iteration (libglib-2.0.so.0)
#3 0x00007ff0bdee004f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
#4 0x00007ff0bde8989a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
#5 0x00007ff0bdcaba73 _ZN7QThread4execEv (libQt5Core.so.5)
#6 0x00007ff0bf082025 n/a (libQt5Qml.so.5)
#7 0x00007ff0bdcb06d8 n/a (libQt5Core.so.5)
#8 0x00007ff0bba0c2e7 start_thread (libpthread.so.0)
#9 0x00007ff0bd3ac54f __clone (libc.so.6)
Stack trace of thread 13203:
#0 0x00007ff0bba12756 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1 0x00007ff0ab63d55b n/a (radeonsi_dri.so)
#2 0x00007ff0ab63d287 n/a (radeonsi_dri.so)
#3 0x00007ff0bba0c2e7 start_thread (libpthread.so.0)
#4 0x00007ff0bd3ac54f __clone (libc.so.6)
Stack trace of thread 13204:
#0 0x00007ff0bba12756 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1 0x00007ff0ab63d55b n/a (radeonsi_dri.so)
#2 0x00007ff0ab63d287 n/a (radeonsi_dri.so)
#3 0x00007ff0bba0c2e7 start_thread (libpthread.so.0)
#4 0x00007ff0bd3ac54f __clone (libc.so.6)
Stack trace of thread 13207:
#0 0x00007ff0bd3a267d poll (libc.so.6)
#1 0x00007ff0b9a577a6 n/a (libglib-2.0.so.0)
#2 0x00007ff0b9a578bc g_main_context_iteration (libglib-2.0.so.0)
#3 0x00007ff0bdee004f _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
#4 0x00007ff0bde8989a _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
#5 0x00007ff0bdcaba73 _ZN7QThread4execEv (libQt5Core.so.5)
#6 0x00007ff0b5608125 n/a (libQt5DBus.so.5)
#7 0x00007ff0bdcb06d8 n/a (libQt5Core.so.5)
#8 0x00007ff0bba0c2e7 start_thread (libpthread.so.0)
#9 0x00007ff0bd3ac54f __clone (libc.so.6)
Stack trace of thread 13201:
#0 0x00007ff0bba12756 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1 0x00007ff0ab63d55b n/a (radeonsi_dri.so)
#2 0x00007ff0ab63d287 n/a (radeonsi_dri.so)
#3 0x00007ff0bba0c2e7 start_thread (libpthread.so.0)
#4 0x00007ff0bd3ac54f __clone (libc.so.6)
Stack trace of thread 13205:
#0 0x00007ff0bba12756 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1 0x00007ff0ab63d55b n/a (radeonsi_dri.so)
#2 0x00007ff0ab63d287 n/a (radeonsi_dri.so)
#3 0x00007ff0bba0c2e7 start_thread (libpthread.so.0)
#4 0x00007ff0bd3ac54f __clone (libc.so.6)
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I've been trying to switch to Nouveau 1.0.14-1 and couldn't get SDDM to start (dmesg prints sddm errors segfault 14, and 4 in libQt5Core.so.5.8.0). It works with the binary driver.
I can't tell if I'm doing the switching wrong or am getting the same behavior, but is anyone with the proprietary Nvidia driver affected?
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Any news about this problem?
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I just want to report that my problem with sddm is gone. I don't know how or when or why. Intel graphics.
There's 1 speculation though: I had kmscon installed, and I had been using kmscon for all my vts, including #1. The day sddm went wrong, I noticed that kmscon was buggy too (cannot switch between vts). So I removed kmscon to use kernel-based vt. Then something got my attention and I stopped investigating.
Days later, I tried to use sddm again and it just worked. So... if you use kmscon too, try uninstalling it. There're instructions on the wiki.
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