A couple of problem with xorg-server 1.7.3

[Peter Hutterer]

On Wed, Dec 09, 2009 at 06:08:29PM +0800, Gregoire Gentil wrote:
> On Wed, 2009-12-09 at 14:11 +1000, Peter Hutterer wrote:
> > On Wed, Dec 09, 2009 at 11:54:09AM +0800, Gregoire Gentil wrote:
> > > I'm using xorg-server 1.7.3 on an ARM device and I have a couple of
> > > problems. Perhaps I can get some hints from the mailing lists.
> > > 
> > > First, since the version later than 1.5.3, X takes a very long time to
> > > start, especially I have a blank screen for almost seven seconds! :-( I
> > > would like to know how I can debug what X is trying to do during this
> > > very long time. Can I put more debug version especially with timing
> > > info? What can I do to investigate? I copy paste the Xorg.0.log file
> > > below.
> > > 
> > > Secondly, I have a null driver loaded below because /dev/input/event3 is
> > > an accelerometer. Is there a way to tell X to discard
> > > a /dev/input/eventX reported by hal? Or is there a hal policy to tell X
> > > not to try this event?
> > 
> > https://fedoraproject.org/wiki/Input_device_configuration, search for
> > "remove key".
> > 
> > > Section "InputDevice"
> > > 	Identifier	"Configured Mouse"
> > > 	Driver		"mouse"
> > > 	Option		"CorePointer"
> > > 	Option		"Device"		"/dev/input/mice"
> > > 	Option		"Protocol"		"ExplorerPS/2"
> > > 	Option		"Emulate3Buttons"	"true"
> > > EndSection
> > > 
> > > Section "InputDevice"
> > > 	Identifier	"Generic Keyboard"
> > > 	Driver		"kbd"
> > > 	Option		"CoreKeyboard"
> > > 	Option		"XkbRules"		"xorg"
> > > 	Option		"XkbModel"		"pc105"
> > > 	Option		"XkbLayout"		"us"
> > > EndSection
> > 
> > Just FYI, the log says about those two sections:
> >     (WW) AllowEmptyInput is on, devices using drivers 'kbd', 'mouse' or
> >     'vmmouse' will be disabled.
> > 
> > You can just remove them, they don't really serve a purpose in your setup.
> Thanks for the email. If I put another XkbLayout, would it be in use? Or
> the whole section is totally ignored?

unless you disable hotplugging (Option "AutoAddDevices" "off"), any kbd
section will be completely ignored. There's "historical" reasons for it,
I'll spare you the details.

> > > Section "ServerFlags"
> > > 	Option		"DontZap"		"False"
> > > EndSection
> > 
> > DontZap is the default since IIRC 1.6.1, not needed unless you want to
> > disable it extra-hard :)
> I think that I will keep this because I want to be able to zap hence the
> "False". I guess that it's True by default. Correct?

no, it's "False" by default and zapping is enabled in the server. If you
have xkeyboard-config >= 1.6 it's not in your default keymap. Though while
you have the gun, you'll have to add the trigger yourself.

setxkbmap -option "terminate:ctrl_alt_bksp" or the matching checkbox in the
keyboard preferences GUI if you have any.
 
Cheers,
  Peter