** Description changed: After upgrading to 18.04, on xfce4 with Display Power Management (xfce4 -power-manager) enabled, or any of the three sliders set to non-zero, - then when the time limit is hit after inactivity the screen goes black - with a cursor flashing. Two Xorg logs are created when this happens (see - attached). Ctrl-Alt-F# will switch to other ttys at this point, but only - briefly before switching back to the one that is black with a single - flashing cursor. + then when the time limit is hit after inactivity two monitors power + down, but then the tty switches to tty8, and the third monitor just + shows a black with a cursor flashing. Switching back to tty7 shows text + saying that the session is locked, but no amount of keyboard or mouse + activity brings up a prompt to unlock it. + + Two Xorg logs are created when this happens (see attached). Ctrl-Alt-F# + will switch to other ttys at this point, but only briefly before + switching back to the one that is black with a single flashing cursor. + After a few switchings between ttys, it stops automatically going back + to tty8. + + This problem also occurs when xscreensaver is used to control the + display power management as well. However on switching back to tty7 in + this case, the unlock dialog is presented as expected and things + continue to work. So it would appear it is something more fundamental + than xfce4-power-manager that is causing the active tty to change when + the screens go sleep. + + The screen power off that occurs while the lightdm's graphical login is + presented (i.e. before logging in) works fine. (I would expect things to happen as in 17.10, namely that the displays blank/switch off as selected, and then when further input is given they unblank/switch on.) + + Please let me know what further information I can provide to narrow down + the problem. lsb_release -rd: Description: Ubuntu 18.04 LTS Release: 18.04 apt-cache policy xfce4-power-manager: xfce4-power-manager: Installed: 1.6.1-0ubuntu1 Candidate: 1.6.1-0ubuntu1 Version table: *** 1.6.1-0ubuntu1 500 500 http://gb.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xfce4-power-manager 1.6.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 CurrentDesktop: XFCE Date: Wed Jul 25 21:10:33 2018 InstallationDate: Installed on 2017-05-13 (438 days ago) InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) SourcePackage: xfce4-power-manager UpgradeStatus: Upgraded to bionic on 2018-07-16 (9 days ago)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1783637 Title: xfce4-power-manager causes X to exit when blanking To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/1783637/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
