<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - USB and DMI keyboard mappings behave differently" href="https://bugs.freedesktop.org/show_bug.cgi?id=78408#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - USB and DMI keyboard mappings behave differently" href="https://bugs.freedesktop.org/show_bug.cgi?id=78408">bug 78408</a> from <a class="email" href="mailto:ed.678901@gmail.com" title="ed.678901@gmail.com">ed.678901@gmail.com</a> <pre>I wrote my reply too quickly: The first paragraph should read "...you cannot map a modifier key to a non-modifier key..." The second paragraph should read "...the same keycode on a regular key as well as a modifier key..." Sorry about the confusion. The link I posted contains a thoroughly proofed explanation. On 26 May 2014 12:20, Ed I <<a href="mailto:ed.678901@gmail.com">ed.678901@gmail.com</a>> wrote: > Hi Martin, > > What I mean is that with USB rules, you cannot map a non-modifier key to a > modifier key, unless the modifier key in question is also remapped. For > example, if you cannot have both Caps Lock and Left Control mapped to the > leftctrl keycode at the same time. > > My expectaction is that you should be able to have the same keycode on a > regular key as well as a non-modifier key. The only reason I mentioned DMI > rules is because they already satisfy this expectation. > > For an even more elaborate illustration, could you please see the question > I posted on the Unix & Linux StackExchange site? > > > <a href="http://unix.stackexchange.com/questions/128234/modifier-keys-cannot-be-mapped-to-regular-keys-on-usb-keyboard-with-udev">http://unix.stackexchange.com/questions/128234/modifier-keys-cannot-be-mapped-to-regular-keys-on-usb-keyboard-with-udev</a> > > Let me know if you still don't get what I mean. I can send you the > hardware models I used, but I'm confident you will discover the same on any > USB keyboard. > > Ed > > > On 25 May 2014 06:09, <<a href="mailto:bugzilla-daemon@freedesktop.org">bugzilla-daemon@freedesktop.org</a>> wrote: > >> Martin Pitt <<a href="mailto:martin.pitt@ubuntu.com">martin.pitt@ubuntu.com</a>> changed <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - USB and DMI keyboard mappings behave differently" href="show_bug.cgi?id=78408">bug 78408</a><<a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - USB and DMI keyboard mappings behave differently" href="show_bug.cgi?id=78408">https://bugs.freedesktop.org/show_bug.cgi?id=78408</a>> >> What Removed Added Status NEW NEEDINFO >> >> *<a href="show_bug.cgi?id=78408#c1">Comment # 1</a> <<a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - USB and DMI keyboard mappings behave differently" href="show_bug.cgi?id=78408#c1">https://bugs.freedesktop.org/show_bug.cgi?id=78408#c1</a>> on >> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - USB and DMI keyboard mappings behave differently" href="show_bug.cgi?id=78408">bug 78408</a> <<a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - USB and DMI keyboard mappings behave differently" href="show_bug.cgi?id=78408">https://bugs.freedesktop.org/show_bug.cgi?id=78408</a>> from Martin >> Pitt <<a href="mailto:martin.pitt@ubuntu.com">martin.pitt@ubuntu.com</a>> * >> >> Can you please explain this in some more detail? >> >> (In reply to <a href="show_bug.cgi?id=78408#c0">comment #0</a> <<a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - USB and DMI keyboard mappings behave differently" href="show_bug.cgi?id=78408#c0">https://bugs.freedesktop.org/show_bug.cgi?id=78408#c0</a>>)> I was expecting the following two mappings to behave the same way: >> > >> > keyboard:dmi:bvn*:bvr*:bd*:svn*:pn*:pvr* >> > KEYBOARD_KEY_3a=leftctrl >> > >> > keyboard:usb:v*p* >> > KEYBOARD_KEY_70039=leftctrl >> >> Those would apply to different devices and different keys, so in which sense >> should they behave the same? >> > However, the USB mapping will only work if the existing key is remapped, e.g. >> > >> > keyboard:usb:v*p* >> > KEYBOARD_KEY_70039=leftctrl >> > KEYBOARD_KEY_700e0=capslock >> > >> > It looks like the behaviour for USB keyboards is a bug. >> >> So what are you trying to do there, and what is the original assignment from >> the kernel? Do you mean you can't assign multiple scan codes to the same key >> code for USB devices? >> >> Thanks! >> >> ------------------------------ >> You are receiving this mail because: >> >> - You reported the bug. >> >> ></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>