*** This bug is a duplicate of bug 1370720 ***
https://bugs.launchpad.net/bugs/1370720
** This bug has been marked a duplicate of bug 1370720
unity-settings-daemon can deadlock if a modeset fails
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https://bugs.launchpad.net/bugs/1693715
Title:
Laptop flat panel show blank screen after undocking with 2 DP displays
on dock
Status in unity-settings-daemon package in Ubuntu:
New
Bug description:
Taking HP laptop and dock available with me for example, laptop has NVIDIA
discrete gpu and proprietary driver installed -
1. connect two DP-displays to dock
2. attach system on dock and make sure all 3 displays are light up
3. undock
You can observe blank screen on laptop's flat panel. After some
investigation it has been found that unity-setting-daemon has grabbed
X-server and waiting for response on error dialog box, this is
blocking other X-clients like compiz which might be also doing
something in response of un-dock event. See following gdb log -
Breakpoint 1, XGrabServer (dpy=0x2193550) at GrServer.c:36
36 LockDisplay(dpy);
#0 XGrabServer (dpy=0x2193550) at GrServer.c:36
#1 0x00007f387a918a49 in gdk_x11_display_grab () from
/usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#2 0x00007f387cbf0a42 in gnome_rr_screen_refresh () from
/usr/lib/libgnome-desktop-3.so.7
#3 0x00007f386191359b in handle_fn_f7 (timestamp=0, mgr=0x2187d00) at
gsd-xrandr-manager.c:1391
#4 gsd_xrandr_manager_2_video_mode_switch (error=0x0, timestamp=0,
manager=0x2187d00) at gsd-xrandr-manager.c:785
#5 handle_method_call_xrandr_2 (invocation=0x7f3868003240,
parameters=<optimized out>, method_name=<optimized out>, manager=0x2187d00) at
gsd-xrandr-manager.c:2567
#6 handle_method_call (connection=<optimized out>, sender=<optimized out>,
object_path=<optimized out>, interface_name=<optimized out>,
method_name=<optimized out>, parameters=<optimized out>,
invocation=0x7f3868003240, user_data=0x2187d00) at gsd-xrandr-manager.c:2596
#7 0x00007f387c21a301 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#8 0x00007f387bc41ce5 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9 0x00007f387bc42048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f387bc4230a in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f387c665e25 in gtk_main () from
/usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#12 0x0000000000403714 in main ()
Program received signal SIGINT, Interrupt.
0x00007f387b70384d in poll () at ../sysdeps/unix/syscall-template.S:81
81 ../sysdeps/unix/syscall-template.S: No such file or directory.
#0 0x00007f387b70384d in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f387bc41fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f387bc4230a in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f387c5f6970 in gtk_dialog_run () from
/usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#4 0x00007f3861911d24 in error_message (primary_text=<optimized out>,
error_to_display=<optimized out>, secondary_text=0x0, mgr=<optimized out>) at
gsd-xrandr-manager.c:1361
#5 0x00007f3861911f35 in apply_configuration
(manager=manager@entry=0x2187d00, config=config@entry=0x25580e0,
timestamp=timestamp@entry=1158092, show_error=show_error@entry=1,
save_configuration=save_configuration@entry=0) at gsd-xrandr-manager.c:528
#6 0x00007f3861912e11 in auto_configure_outputs (timestamp=1158092,
manager=0x2187d00) at gsd-xrandr-manager.c:1737
#7 use_stored_configuration_or_auto_configure_outputs
(manager=manager@entry=0x2187d00, timestamp=1158092) at
gsd-xrandr-manager.c:1779
#8 0x00007f3861913cdd in on_randr_event (screen=0x21fb760, data=<optimized
out>) at gsd-xrandr-manager.c:1837
#9 0x00007f387bf113b8 in g_closure_invoke () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007f387bf22d3d in ?? () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007f387bf2aa29 in g_signal_emit_valist () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007f387bf2ace2 in g_signal_emit () from
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007f387cbf0964 in ?? () from /usr/lib/libgnome-desktop-3.so.7
#14 0x00007f387cbf0a59 in gnome_rr_screen_refresh () from
/usr/lib/libgnome-desktop-3.so.7
#15 0x00007f386191359b in handle_fn_f7 (timestamp=0, mgr=0x2187d00) at
gsd-xrandr-manager.c:1391
#16 gsd_xrandr_manager_2_video_mode_switch (error=0x0, timestamp=0,
manager=0x2187d00) at gsd-xrandr-manager.c:785
#17 handle_method_call_xrandr_2 (invocation=0x7f3868003240,
parameters=<optimized out>, method_name=<optimized out>, manager=0x2187d00) at
gsd-xrandr-manager.c:2567
#18 handle_method_call (connection=<optimized out>, sender=<optimized out>,
object_path=<optimized out>, interface_name=<optimized out>,
method_name=<optimized out>, parameters=<optimized out>,
invocation=0x7f3868003240, user_data=0x2187d00) at gsd-xrandr-manager.c:2596
#19 0x00007f387c21a301 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#20 0x00007f387bc41ce5 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f387bc42048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f387bc4230a in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f387c665e25 in gtk_main () from
/usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#24 0x0000000000403714 in main ()
Continuing.
Applying following patch to unity-setting-daemon fixing this issue -
=== modified file 'plugins/xrandr/gsd-xrandr-manager.c'
--- plugins/xrandr/gsd-xrandr-manager.c 2016-05-20 16:50:05 +0000
+++ plugins/xrandr/gsd-xrandr-manager.c 2017-05-26 07:01:30 +0000
@@ -1355,9 +1355,8 @@
"%s", primary_text);
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG
(dialog), "%s",
error_to_display ?
error_to_display->message : secondary_text);
-
- gtk_dialog_run (GTK_DIALOG (dialog));
- gtk_widget_destroy (dialog);
+ g_signal_connect_swapped (dialog, "response", G_CALLBACK
(gtk_widget_destroy), dialog);
+ gtk_widget_show_all (dialog);
}
static void
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