[Bug 99173] Xorg waits for long time(200ms+) to invoke VT_RELDISP
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Thu May 18 17:04:00 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=99173
--- Comment #10 from zhang rui <rui.zhang at intel.com> ---
Created attachment 131408
--> https://bugs.freedesktop.org/attachment.cgi?id=131408&action=edit
pm_console_suspend delay during suspend
Don't know what kind of info is needed.
This problem can be reproduced on many platforms. here is the analyze_suspend
output on Dell XPS 13 9360, which is a KBL platform, with 4.11 kernel.
As you can see in the ftrace output
python-2517 [003] d... 267.793000: pm_prepare_console_cal:
(pm_prepare_console+0x0/0x40)
python-2517 [000] d... 268.065713: pm_prepare_console_ret:
(pm_suspend+0x1dd/0x3a0 <- pm_prepare_console) arg1=0x0
this is the time cost by switching console during suspend.
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