Attaching xenial debdiff ** Patch added: "xenial debdiff" https://bugs.launchpad.net/ubuntu/bionic/+source/xfce4-settings/+bug/1308105/+attachment/5249614/+files/xenial.debdiff
-- You received this bug notification because you are a member of Mythbuntu Bug Team, which is subscribed to Mythbuntu. https://bugs.launchpad.net/bugs/1308105 Title: [SRU] Xfce resets TV mode to NULL when power cycled Status in Mythbuntu: Confirmed Status in xfce4-settings: Fix Released 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: Fix Released Status in nvidia-graphics-drivers source package in Xenial: Invalid Status in nvidia-graphics-drivers-331 source package in Xenial: Invalid Status in xfce4-settings source package in Xenial: In Progress Status in nvidia-graphics-drivers source package in Bionic: Invalid Status in nvidia-graphics-drivers-331 source package in Bionic: Invalid Status in xfce4-settings source package in Bionic: Fix Released Bug description: [Impact] * When a TV is power-cycled, it is no longer detected as an available display. * The root issue is in xfce4-settings: xfsettingsd. * The related patch correctly handles the NULL mode the TV enters when powered off. [Test Case] * Connect a TV to a computer running xfce4-settings 4.12.0, this can be in a single configuration or dual-monitor. * Power the TV off. * Power the TV on. * Expected: TV powers on and remains connected as an available display. * Actual: TV powers on and is not connected or detected. [Regression Potential] * Regression potential is minimal: The associated patch targets this very specific scenario and behavior, and does not interact with the rest of the codebase. [Original Report] 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/~mythbuntu-bugs Post to : mythbuntu-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~mythbuntu-bugs More help : https://help.launchpad.net/ListHelp
