Ok I have confirmed that the patch in #115 (Saved the Patch by jkampe68 (http://bug-attachment.xfce.org/attachment.cgi?id=6590) as .patch file.) fixes the issue on NUC derived systems (Intel graphics, I've got a NUC5i7RYH and a Gigabyte BRIX) where the screen attached to the display port output does not come back on when power is re-applied to the monitor. The next step is validating that the screen can recover after a "sleep state" which has been initiated by light-lock.
I pulled the git repo applied the patch, ran autogen.sh then make, then make install. Rebooted and verified the new settingsd was running ( cmcmanis@charliehorse:~$ xfsettingsd --version xfsettingsd 4.12.0git-56abfbd (Xfce 4.12) Copyright (c) 2008-2011 The Xfce development team. All rights reserved. Please report bugs to <http://bugzilla.xfce.org/>. cmcmanis@charliehorse:~$ Power cycled the monitor, and where previously this would always cause it to not come back, it now returns. System is Xubuntu 16.04 otherwise vanilla install. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/1308105 Title: Xfce resets TV mode to NULL when power cycled Status in Mythbuntu: Confirmed Status in xfce4-settings: Confirmed Status in nvidia-graphics-drivers package in Ubuntu: Invalid Status in nvidia-graphics-drivers-331 package in Ubuntu: Invalid Status in xfce4-settings package in Ubuntu: Confirmed Bug description: I had an HTPC with Mythbuntu 12.04 installed. Upon upgrading a new behavior that if the TV is power cycled it no longer detects a link with the HTPC. When this happens I can find in the xorg log that there is an accompanying log item: [ 39829.509] (II) NVIDIA(0): Setting mode "NULL" After debugging with NVIDIA at https://devtalk.nvidia.com/default/topic/729955/linux/tv-stops-being- detected/ we've deteremined it's a X client that reacts to the RANDR events causing the mode to be set to NULL. Working through the list in an Xfce environment, the culprit is xfsettingsd. If xfsettingsd is running, it causes the TV to come up in a NULL mode. If it's killed, it remains in the mode it was previously running in. Until this is fixed, this behavior can be worked around with a simple shell script: ============================== #!/bin/sh #Fix TV state when HDMI link is lost. #By Mario Limonciello <supe...@ubuntu.com> OUTPUT="HDMI-0" BAD_MODE="1280x720" GOOD_MODE="1920x1080" for MODE in $BAD_MODE $GOOD_MODE; do DISPLAY=:0 xrandr --output $OUTPUT --mode $MODE sleep 2 done ============================== To manage notifications about this bug go to: https://bugs.launchpad.net/mythbuntu/+bug/1308105/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp