| Summary: | ctrl:swapcaps kills some control-shift key combos | ||
|---|---|---|---|
| Product: | xkeyboard-config | Reporter: | Andreas Koch <koch> |
| Component: | doc | Assignee: | xkb |
| Status: | RESOLVED NOTABUG | QA Contact: | |
| Severity: | normal | ||
| Priority: | high | CC: | daniel |
| Version: | unspecified | Keywords: | NEEDINFO |
| Hardware: | x86 (IA32) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: | xkbcomp :0 -xkb zz.xkb after seeting ctrlswapcaps | ||
at a guess, I'd say this is related to the confusion of keycodes and keysyms for modifier definitions Andreas, could you please run xkbcomp with output to the text .xkb file - and attach it? Thanks... (xkbcomp :0 -xkb zz.xkb) Created attachment 5279 [details] xkbcomp :0 -xkb zz.xkb after seeting ctrlswapcaps Here's the data requested by svu@gnome.org. Good hunting!
> Here's the data requested by svu@gnome.org. Good hunting!
Well, I see nothing strange or invalid... Could you please do the same thing for
the configuration without "swapcaps"?
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NEEDSINFO state was removed in Bugzilla 3.x, reopening any bugs previously listed as NEEDSINFO.
- benjsc
fd.o Wrangler
From the original report (no event in xev) and my own experience with some keyboards, my educated guess is that the issue is not in X but much closer to hardware. With my Sven Slim 303 keyboard pressing CapsLock+Shift (in any order) and then arbitrary alpha keys gives the following results: W-S-X "diagonal" is dead, all other keys are good. I believe that this is how keyboard hardware is wired. Original reporter can check upon my claim by pressing CapsLock+Shift+X without switching CapsLock and Ctrl and checking if xev reports anything when pressing X. (In reply to comment #6) > Original reporter can check upon my claim by pressing CapsLock+Shift+X without > switching CapsLock and Ctrl and checking if xev reports anything when pressing > X. Your suspicion is indeed correct, holding non-swapped CapsLock+Shift produces no effect when pressing the keys in the 2-w-s-x diagonal. So this does appear to be a limitation of the keyboard hardware. Many thanks for the hint :-) |
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To reproduce, first reset all XKB options $ setxkbmap -option -option srvrkeys:none Now press control-shift-x and watch correct result in xev $ xev ... KeyPress event, serial 30, synthetic NO, window 0x3400001, root 0x72, subw 0x0, time 18906299, (54,126), root:(1269,151), state 0x0, keycode 37 (keysym 0xffe3, Control_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 30, synthetic NO, window 0x3400001, root 0x72, subw 0x0, time 18906303, (54,126), root:(1269,151), state 0x4, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 30, synthetic NO, window 0x3400001, root 0x72, subw 0x0, time 18909298, (54,126), root:(1269,151), state 0x5, keycode 53 (keysym 0x58, X), same_screen YES, XLookupString gives 1 bytes: (18) "▒" XmbLookupString gives 1 bytes: (18) "▒" XFilterEvent returns: False Control-Shift-X is correctly reported as an event. Now swap control and caps-lock keys. $ setxkbmap -option -option srvrkeys:none,ctrl:swapcaps ... and try the same excercise again: $ xev ... KeyPress event, serial 30, synthetic NO, window 0x3400001, root 0x72, subw 0x0, time 19055073, (66,94), root:(1279,119), state 0x0, keycode 66 (keysym 0xffe3, Control_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 30, synthetic NO, window 0x3400001, root 0x72, subw 0x0, time 19056614, (66,94), root:(1279,119), state 0x4, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False And that's it, pressing x in addition to control and shift does not generate an event. Interestingly, not all control-shift-keys get killed this way. E.g., for me, the effect occurs only for the key column containing x,s,w,2. My keyboard is an IBM Model M connected via PS/2 to a Dell Latitude C810 laptop running Gentoo Linux, kernel 2.4.27. XKB is set as follows: $ setxkbmap -print xkb_keymap { xkb_keycodes { include "xfree86+aliases(qwerty)" }; xkb_types { include "complete" }; xkb_compat { include "complete" }; xkb_symbols { include "pc/pc(pc104)+pc/us+ctrl(swapcaps)+srvr_ctrl(no_srvr_keys)" }; xkb_geometry { include "pc(pc104)" }; }; Changing the keyboard type to pc101 and pc102 does not affect the misbehavior I observe.