How to disable Ctrl-Atl-F*
Jean Blouin
I am porting an application from another unix platform to linux which
uses Ctrl-Alt-F8 and Ctrl-Alt-F9. But on Linux these key are used to
switch to virtual console. Is there a way to disable this, and let my
application receive Ctrl-Alt-F8 and Ctrl-Alt-F9? I tried using the
following option in XF86Config
Section "ServerFlags"
Option "DontVTSwitch" "on"
EndSection
But it does not work.
I am using RedHat 8.0 with stock XFree86 Version 4.2.0.
Any help would be greatly appreciated.
Jean
Dave Uhring
> Hi,
>
> I am porting an application from another unix platform to linux which
> uses Ctrl-Alt-F8 and Ctrl-Alt-F9. But on Linux these key are used to
> switch to virtual console. Is there a way to disable this, and let my
> application receive Ctrl-Alt-F8 and Ctrl-Alt-F9? I tried using the
> following option in XF86Config
/etc/inittab
Robt. Miller
Or if he didn't want to do without the terminals he could remap with
defkeymap.map/loadkeys.
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Dances With Crows
Black Sun and said:
> In article <pan.2003.06.19....@yahoo.com>, Dave Uhring
> wrote:
>> On Thu, 19 Jun 2003 11:27:57 -0700, Jean Blouin wrote:
>>> I am porting an application from another unix platform to linux
>>> which uses Ctrl-Alt-F8 and Ctrl-Alt-F9. But on Linux these key are
>>> used to switch to virtual console. Is there a way to disable this,
>>> and let my application receive Ctrl-Alt-F8 and Ctrl-Alt-F9? I tried
>>> using the following option in XF86Config
>>> Option "DontVTSwitch" "on"
Interesting.
>> /etc/inittab
Won't do anything about the OP's problem. I have nothing running on
/dev/vc/9 , but Ctrl-Alt-F9 from X switches to vc9 anyway.
> Or if he didn't want to do without the terminals he could remap with
> defkeymap.map/loadkeys.
That's only for virtual consoles, isn't it? X handles things
differently. AFAIK, Ctrl-Alt-F?, Ctrl-Alt-Plus, and Ctrl-Alt-Minus are
handled directly by the X server, and there's no way to remap these key
combinations with xmodmap or xbindkeys.
It seems odd that Ctrl-Alt-F[89] are used and F[1-7] aren't. If you're
porting this anyway, it'd probably be a better idea to reassign whatever
functions Ctrl-Alt-F[78] call to other shortcut keys.
--
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Jean Blouin
> On Thu, 19 Jun 2003 16:17:46 -0500, Robt. Miller staggered into the
> Black Sun and said:
> > In article <pan.2003.06.19....@yahoo.com>, Dave Uhring
> > wrote:
> >> On Thu, 19 Jun 2003 11:27:57 -0700, Jean Blouin wrote:
> >>> I am porting an application from another unix platform to linux
> >>> which uses Ctrl-Alt-F8 and Ctrl-Alt-F9. But on Linux these key are
> >>> used to switch to virtual console. Is there a way to disable this,
> >>> and let my application receive Ctrl-Alt-F8 and Ctrl-Alt-F9? I tried
> >>> using the following option in XF86Config
>
> >>> Option "DontVTSwitch" "on"
>
> Interesting.
>
> >> /etc/inittab
>
> Won't do anything about the OP's problem. I have nothing running on
> /dev/vc/9 , but Ctrl-Alt-F9 from X switches to vc9 anyway.
>
> > Or if he didn't want to do without the terminals he could remap with
> > defkeymap.map/loadkeys.
>
> That's only for virtual consoles, isn't it? X handles things
> differently. AFAIK, Ctrl-Alt-F?, Ctrl-Alt-Plus, and Ctrl-Alt-Minus are
> handled directly by the X server, and there's no way to remap these key
> combinations with xmodmap or xbindkeys.
>
> It seems odd that Ctrl-Alt-F[89] are used and F[1-7] aren't. If you're
> porting this anyway, it'd probably be a better idea to reassign whatever
> functions Ctrl-Alt-F[78] call to other shortcut keys.
I actually found the solution I was looking for... (By looking at the
XFree86 source code...Isn't this great, I love Linux! )
I added the following to my XF86Config
Section "ServerFlags"
Option "VTSysReq" "on"
EndSection
This allow my application to use all Ctrl-Alt-F* and it remaps the
virtual console switch to Alt-SysReq-F*, which for my application does
not create any hotkey conflicts.
Thanks to all who responded.
Jean
Dances With Crows
and said:
> Dances With Crows <dancesw...@usa.net> wrote in message
> news:<slrnbf4ah0.4vt....@samantha.crow202.dyndns.org>...
>> It seems odd that Ctrl-Alt-F[89] are used and F[1-7] aren't. If
>> you're porting this anyway, it'd probably be a better idea to
>> reassign whatever functions Ctrl-Alt-F[78] call to other shortcut
>> keys.
>
> I actually found the solution I was looking for... (By looking at the
> XFree86 source code...Isn't this great, I love Linux! )
There's always the option of looking at the source, which is great...
this should've been better-documented though. VTSysReq is actually in
the man pages in a reasonable place, unlike RenderColormapMode (see
slrnb6kb40.rjl....@samantha.crow202.dyndns.org for what that
option is and what it can be used for.)
> I added the following to my XF86Config
> Section "ServerFlags"
> Option "VTSysReq" "on"
> EndSection
>
> This allow my application to use all Ctrl-Alt-F* and it remaps the
> virtual console switch to Alt-SysReq-F*,
The XF86Config man page says this:
Option "VTSysReq" "boolean"
enables the SYSV-style VT switch sequence for non-SYSV systems
which support VT switching. This sequence is Alt-SysRq followed
by a function key (Fn). This prevents the X server trapping the
keys used for the default VT switch sequence, which means that
clients can access them. Default: off.
...if you read the entry carefully, it actually makes sense, but it's
totally non-obvious if you're reading quickly and trying to do keyword
searches. Sigh.