Red Hat Bugzilla – Bug 546607
gnome-screensaver looses mouse/keyboard after resume with external display
Last modified: 2015-01-14 18:24:21 EST
Description of problem:
Not sure this is a gnome-screensaver problem, but killing gnome-screensaver works as a workaround.
Basically when I suspend my ThinkPad T60 (Intel 945GM), then while in suspended state attach an external display (VGA or DVI), and open the lid to trigger a resume, I get the login screen on the LVDS, but no mouse cursor and I cannot type anything.
I can however switch to a VT, login and kill gnome-screensaver, and switch back and continue to work.
Also if this happens, after resume the external display does not get a signal, but the moment I do a VT switch it does get signal, and if I then immediately switch back, the mouse cursor is visible on the secondary display, but does not move.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
2. Attach external display
No mouse cursor, cannot type password
functioning mouse and keyboard
Acer TravelMate 6292, Intel GM965, same issues. It appears that the unlock dialog gets confused if the screen geometry changes while it's active. This is a regression from 2.26.
Steps to reproduce same as above.
Password/unlock dialog on LVDS screen, no pointer visible, no keyboard focus for dialog, can not type or otherwise interact with the dialog.
Wait 60 seconds for dialog to time out and screensaver to reactivate, then touch the mouse or keyboard for dialog to reappear -- this time it works.
Created attachment 389024 [details]
gnome-screensaver debug messages
With the below versions I started gnome-screensaver in debug before suspending. After resume I killed it which can be seen by the 'Terminated' message in the log.
I updated to gnome-screensaver-2.28.2-1.fc12.x86_6 but it has not made a difference.
I can also confirm Osma's workaround. Wait for gnome-screensaver to time-out and hide the unlock dialog. Then pressing a key and this time it does work.
The new gnome-power-manager-2.28.3-1.fc12.x86_64 again makes no difference. I even tried if perhaps pressing alt-f2 and typing "pkill -f gnome-screensaver" would get me past the screensaver, in which case it would have been another security exploit as in CVE-2010-0422, #564464 but that does not seem to be the case.
Fact remains that gnome-screensaver looses input focus when suspending, attaching an external display and then resuming.
ok, that should obviously have read gnome-screensaver-2.28.3-1.fc12.x86_64, not gnome-power-manager.
I tried F13alpha, and the issue is resolved there. It would be nice if whatever fixed the issue could be backported to F12, but I probably won't care any more in 2 months time when F13 is out.
Although I was not able in a quick test to reproduce it with F13 Alpha, the current final build of F13 has the same problem as before.
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I have not seen this for some time on up-to-date F13 installation.
I no longer have the 945GM equipped ThinkPad. And on my new ThinkPad with latest generation Intel video, I have not seen this issue with either F13 or F14.
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