I didn’t know for sure if I should respond to this but it’s the only search result I could find.
I had this problem on a new build. The LCD would shut off and a few seconds later the backlight would come back on with no display. For those that wind up here, it has nothing to do with the way Ubuntu configures it’s drivers. I spent a couple hours on this and using a multimeter discovered after the system halts the USB bus was being reset. As in, the power dropped to 0V for a second then back up to 5V. This resets the iMon display and causes the backlight to turn on with no display. In the PC BIOS, I had enabled all wake options (from memory, Pcie, USB, lan, keyboard, mouse.) It turns out enabling the machine to wake from a USB device causes the motherboard to reset all USB devices when the system halts so the attached USB devices can wake the system. On my motherboard, I only had to set the BIOS to wake from keyboard with any key and the iMon device will wake the system - all other options were disabled. After that, the iMon display shut off and stayed off when the system halted. Hope this helps others. -- You received this bug notification because you are a member of Mythbuntu Bug Team, which is subscribed to Mythbuntu. https://bugs.launchpad.net/bugs/515194 Title: lcdproc does not shutdown imon(0038) lcd-display after system shutdown Status in Mythbuntu: Won't Fix Bug description: When I shut down Mythbuntu, LCD-display lights turn off for couple of seconds but then backlights turn on again and stay on after shutdown. Why this is happening? I have following parameters in LCDd.conf: [imonlcd] # Specify which iMon protocol should be used [legal: 0=15c2:ffdc device, # 1=15c2:0038 device; default: 0] Protocol=1 # Set the exit behavior [legal: 0=leave shutdown message, 1=show the big clock, # 2=blank device; default: 1] OnExit=2 lcdproc version information: sami@sami-htpc:~$ apt-cache policy lcdproc lcdproc: Asennettu: 0.5.3-0ubuntu1 Ehdokas: 0.5.3-0ubuntu1 Versiotaulukko: *** 0.5.3-0ubuntu1 0 500 http://fi.archive.ubuntu.com karmic/universe Packages 100 /var/lib/dpkg/status To manage notifications about this bug go to: https://bugs.launchpad.net/mythbuntu/+bug/515194/+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
