I tested this patch and it seems to have fixed the problem for me. I have Linux machine running Ubuntu Trusty with the latest nVidia drivers (337.25-0ubuntu1~xedgers14.04.2). I used XFCE as my window manager for a mythtv/xbmc setup.
patching xfsettingsd has solved the loss of display issue for me. My machine is connected to an Onkyo receiver which is then connected to an Epson projector. -- You received this bug notification because you are a member of UBUNTU - AL - BR, which is subscribed to Mythbuntu. https://bugs.launchpad.net/bugs/1308105 Title: Xfce resets TV mode to NULL when power cycled Status in Mythbuntu, Ubuntu derivative focused upon MythTV: 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/~linux-traipu Post to : linux-traipu@lists.launchpad.net Unsubscribe : https://launchpad.net/~linux-traipu More help : https://help.launchpad.net/ListHelp
