Public bug reported: The Logitech R400 presenter's buttons for starting a presentation and toggling the screen to black does not work any more since at least Ubuntu 14.04 (it had worked in a previous Ubuntu version I do not remember exactly and it still worked in Debian 7 Wheezy but also does not work any more in Debian 8 Jessie). The buttons for the next and previous slide still do.
This presenter model has probably been one of the most widely spread ones since many years. I've bought mine in 2010 and it still is the best selling presenter on amazon.com and amazon.de. So really a lot of people are affected (moreover, similar Logitech models do exist, too). The problem seems to be in file /lib/udev/hwdb.d/60-keyboard.hwdb – the "displaytoggle" and "presentation" entries do not seem to be mapped to a key correctly (I do not understand how that mapping works in more detail). As a workaround, the Logitech R400 entry in this file can be changed (see attached patch) followed by sudo udevadm hwdb --update but it does not seem to be a real solution as other devices are probably affected, too. The real solution would probably be to get the "toggledisplay" etc. entries in this configuration file to be mapped exactly. latest Ubuntu version tested: 15.10 udev package version: 225-1ubuntu9 ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Patch added: "workaround for /lib/udev/hwdb.d/60-keyboard.hwdb" https://bugs.launchpad.net/bugs/1554065/+attachment/4591577/+files/workaround.diff ** Summary changed: - Logitech presenter only working partially since Ubuntu 14.04 + Logitech presenter only working partially -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1554065 Title: Logitech presenter only working partially Status in systemd package in Ubuntu: New Bug description: The Logitech R400 presenter's buttons for starting a presentation and toggling the screen to black does not work any more since at least Ubuntu 14.04 (it had worked in a previous Ubuntu version I do not remember exactly and it still worked in Debian 7 Wheezy but also does not work any more in Debian 8 Jessie). The buttons for the next and previous slide still do. This presenter model has probably been one of the most widely spread ones since many years. I've bought mine in 2010 and it still is the best selling presenter on amazon.com and amazon.de. So really a lot of people are affected (moreover, similar Logitech models do exist, too). The problem seems to be in file /lib/udev/hwdb.d/60-keyboard.hwdb – the "displaytoggle" and "presentation" entries do not seem to be mapped to a key correctly (I do not understand how that mapping works in more detail). As a workaround, the Logitech R400 entry in this file can be changed (see attached patch) followed by sudo udevadm hwdb --update but it does not seem to be a real solution as other devices are probably affected, too. The real solution would probably be to get the "toggledisplay" etc. entries in this configuration file to be mapped exactly. latest Ubuntu version tested: 15.10 udev package version: 225-1ubuntu9 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1554065/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp