Bug 733448 – Replacing the shell hangs display

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Bug 733448 - Replacing the shell hangs display


Summary:	Replacing the shell hangs display


Status:	RESOLVED DUPLICATE of bug 733068

Product:	mutter
Classification:	Core
Component:	general
Version:	3.13.x
Hardware:	Other Linux

Importance:	Normal normal
Target Milestone:	---
Assigned To:	mutter-maint
QA Contact:	mutter-maint

URL:
Whiteboard:

Depends on:
Blocks:

Reported:	2014-07-20 11:12 UTC by Colin Guthrie
Modified:	2014-07-20 11:39 UTC

See Also:
GNOME target:	---
GNOME version:	---

Description Colin Guthrie 2014-07-20 11:12:25 UTC

Not sure if this is something lower level in e.g. the driver, but replacing gnome-shell no longer works for me.

Either via ALT+F2 + r, or running gnome-shell --replace in a terminal, both cause the screen to visually freeze and I cannot seem to continue.

I'll try and see if I can trace it down to a deadlock of some kind in either the old or new process.

Comment 1 Colin Guthrie 2014-07-20 11:18:39 UTC

Seems it's some kind of Xinput/XCB deadlock.

I'll change bug report to mutter as I guess that's a good start even if the underlying issue is actually lower level.

+ Trace 233846

#0 poll
#1 _xcb_conn_wait
#2 wait_for_reply
#3 xcb_wait_for_reply
#4 _XReply
#5 _XIPassiveGrabDevice
#6 XIGrabKeycode
#7 meta_change_keygrab
#8 g_hash_table_foreach
at ghash.c line 1550
#9 meta_window_change_keygrabs
#10 meta_window_grab_keys
#11 meta_window_destroy_frame
#12 meta_window_unmanage
#13 meta_display_unmanage_windows_for_screen
#14 meta_screen_free
#15 meta_display_close
#16 xevent_filter
#17 gdk_event_apply_filters
#18 _gdk_x11_display_queue_events
#19 gdk_display_get_event
#20 gdk_event_source_dispatch
#21 g_main_context_dispatch
at gmain.c line 3064
#22 g_main_context_dispatch
at gmain.c line 3663
#23 g_main_context_iterate
at gmain.c line 3734
#24 g_main_loop_run
at gmain.c line 3928
#25 meta_run
#26 main

Comment 2 Jasper St. Pierre (not reading bugmail) 2014-07-20 11:26:55 UTC

Probably fixed by

https://git.gnome.org/browse/mutter/commit/?id=806dabe2d79f90e005610ccca72bdced59c9feb4

Can you cherry-pick that commit and test?

Comment 3 Colin Guthrie 2014-07-20 11:39:41 UTC

Yes, confirmed that that fixes it. Sorry for the dupe of #733068

*** This bug has been marked as a duplicate of bug 733068 ***