Logitech diNovo Mini
From MythTV
The Logitech diNovo Mini is a palm-sized keyboard directly targeted at Home Theater PC users. It is a bluetooth keyboard that incorporates a full QWERTY layout with a touch-pad mouse.
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Ubuntu 8.10 Update
According to the Ubuntu 8.10 release notes the keyboard driver has undergone extensive modifications, and previous configurations with xmodmap will need to be changed.
The crux of the changes (as far as the author can tell) is that now the keyboard mapping is decided by XWindows on the fly, maybe with the Hardware Abstraction Layer (HAL) putting it's 2-cents worth in.
Marc Randolph suggested on the MythTV Mailing list:
- The X.Org configuration file (/etc/X11/xorg.conf) still has InputDevice entries for the mouse and keyboard, but they are ignored now because input-hotplug is used. The keyboard settings now come from /etc/default/console-setup; to change them please use sudo dpkg-reconfigure console-setup. After that, HAL and X need to be restarted (e.g., by rebooting your system).
So, with the keyboard manually set to "Logitech diNovo" (there is no "Logitech diNovo Mini" option), all the previously good keycodes are changed, and some of the keys do not generate a scan code at all.
The following keycodes provide a partial solution:
keycode 174 = Escape keycode 173 = Left keycode 171 = Right keycode 172 = P keycode 175 = R
The author will provide a less-suckfull approach once it becomes known to him. At the moment it also seems that Mythbuntu 8.10 no longer automatically calls xmodmap either.
Media Buttons
The keyboard includes a row of extra buttons along the top, plus some alternate blue function buttons. At the time of writing (2008-08-22) these buttons are not natively supported under Mythbuntu Linux or MythTV. However it's possible to re-map these keys to something useful for MythTV using xmodmap.
The program xmodmap takes a plain text file of key-codes (determined with the xev program), and the keystroke this code should generate.
! DiNovo Mini Keyboard Mappings for MythTV ! ! Volume Down: keycode 174 XF86AudioLowerVolume ! Volume Up: keycode 176 XF86AudioRaiseVolume ! Mute: keycode 160 XF86AudioMute ! Record: keycode 177 XF86AudioRecord ! Skip Left: keycode 144 XF86AudioPrev ! Skip Right: keycode 153 XF86AudioNext ! Stop: keycode 164 XF86AudioStop ! Play/Pause: keycode 162 XF86AudioPlay ! Back: keycode 22 ?? Backspace ! -------------------------- ! Music: keycode 129 XF86Music ! Browser: keycode 178 XF86WWW ! Power: keycode 223 XF86Sleep ! keycode 174 = F10 keycode 176 = F11 keycode 160 = F9 keycode 177 = R keycode 144 = Left keycode 153 = Right keycode 164 = Escape keycode 162 = P keycode 129 = XF86Music keycode 178 = XF86WWW keycode 223 = XF86Sleep
(Note: The blue alt-keys (Music, Browser, Power) are not mapped to anything useful in MythTV, this is left as an exercise for the reader!)
Save the above to a file named .Xmodmap (or anything else, it doesn't matter). To bring the above functions up immediately enter:
xmodmap /home/mythtv/.Xmodmap
Now you need to make sure the above will come up each time the MythTV system is rebooted. This is system dependent, but basically whenever mythfrontend is about to start xmodmap should be run. Mythbuntu seems to automatically do this for a ~/.Xmodmap for the user running the frontend.
The Mouse-trackpad
With the current release of Ubuntu (8.10) no further configuration is needed to get the mouse-trackpad of the diNovo mini working. However With the previous Ubuntu versions the following changes will see it right.
Based on some great work by the myth-fans in AVSforums, repairing the problem is a simple configuration change.
As root (or via sudo) add the following line to /etc/modprobe.d/options -
For Ubuntu 8.10:
No update is necessary, it seems to work without modification.
For Ubuntu 8.04:
options usbhid quirks=0x046d:0xc71f:0x00080000
For Ubuntu 7.10: (not verified by the author)
options usbhid quirks=0x046d:0xc71f:0x00200000
Then rebuild your kernel startup ramdisk, because you need these options at boot-time:
update-initramfs -u
Technical Notes
- Using your own bluetooth adapter can cause problems with this keyboard. The author's own (inexpensive) bluetooth dongle failed to maintain a good link to the keyboard, and using other bluetooth devices (e.g.: a nearby Nintendo Wii console) would cause the link to drop-out. Using the dongle included with the keyboard solves these stability problems.
- On those rare occasions when the keyboard will not pair with the computer - remove the battery from the keyboard (and type a few keys to exhaust capacitors), before trying again. This usually does the trick.
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