I created a merge request of Tim's branch into the 14.04 branch.
** Changed in: unity-settings-daemon (Ubuntu)
Status: Triaged => In Progress
** Description changed:
OEM LP private bug: https://bugs.launchpad.net/bugs/1466441
Title: Sometimes system turns a black screen when resume from S3 via Lid
Close
- Summary:
+ [Impact]
+
Sometimes system turns a black screen when resume from S3 via Lid Close
It only has cursor on screen but still can switch to tty1.
Failure rate ~ 1/5
- Steps:
+ [Test Case]
1. install Ubuntu 14.04.2 & 3.19+ kernel and boot to OS
2. Close the lid
3. Open the lid
4. check the display status
Expected results: System should resume to the log in screen when open
the lid
Actual results:
System sometimes fails to resume back to the log in screen but blackscreen
instead.
(Failure rate~ 1/5)
+
+ [Regression Potential]
+ Low. Delaying touchscreen mapping by 3 seconds should not affect any other
input device.
+
Details:
unity-settings-deamon will call "xinput --map-to-output 11 eDP1" at
background,
and it's being blocked so only cursor will show on screen.
1. Switch to tty1 when this happen
2. Login with user account on tty1.
3. Use "DISPLAY=:0 xrandr " on commandline you'll see it's being blocked.
Since xinput is being blocked for some unknown reason (in gdb it shows
polling on xcb_connect_to_fd() in XOpenDisplay() ),
a possible workaround is to set a timeout for xinput in u-s-d.
=== modified file 'plugins/xrandr/gsd-xrandr-manager.c'
--- plugins/xrandr/gsd-xrandr-manager.c 2014-06-05 11:56:15 +0000
+++ plugins/xrandr/gsd-xrandr-manager.c 2015-07-01 08:59:56 +0000
@@ -2199,7 +2199,7 @@
- if (gnome_rr_output_info_is_active(output)) {
- g_debug ("Mapping touchscreen %d onto output %s",
- device_id, name);
+ if (gnome_rr_output_info_is_active(output)) {
+ g_debug ("Mapping touchscreen %d onto output %s",
+ device_id, name);
- sprintf (command, "xinput --map-to-output %d %s",
+ sprintf (command, "timeout 3s xinput --map-to-output %d %s",
- device_id, name);
- status = system (command);
- }
+ device_id, name);
+ status = system (command);
+ }
** Summary changed:
- For skylake system, u-s-d cause a black screen when resume from S3 via Lid
Close
+ SRU: For skylake system, u-s-d cause a black screen when resume from S3 via
Lid Close
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https://bugs.launchpad.net/bugs/1471708
Title:
SRU: For skylake system, u-s-d cause a black screen when resume from
S3 via Lid Close
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