X window display bug?

X window display bug?

[Bo Lin]

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Hi emacs-devel,

I'm getting weird GUI behavior when compiling the latest CVS code
(actually I use git to pull from git://git.sv.gnu.org/emacs.git).
Attached is a screen shot of what it (started with emacs -Q) looks like.
As you can see, the left and right margins are unusually large, I can't
`split-window-horizontally' because "Window width 7 too small (after
splitting)", and the number returned by `window-width' is clearly wrong.
This behavior has been around for at least two months (it has been like
this ever since I started trying to compile emacs23). Any suggestions?

This is compiled on Ubuntu 8.04.

$ uname -a
Linux unicorn 2.6.24-22-generic #1 SMP Mon Nov 24 18:32:42 UTC 2008 i686 GNU/Linux
$ gcc -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.2 --program-suffix=-4.2 --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-mpfr --enable-targets=all --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.2.4 (Ubuntu 4.2.4-1ubuntu3)


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Re: X window display bug?

[Jan Djärv]

Bo Lin skrev:
> Hi emacs-devel,
> 
> I'm getting weird GUI behavior when compiling the latest CVS code
> (actually I use git to pull from git://git.sv.gnu.org/emacs.git).
> Attached is a screen shot of what it (started with emacs -Q) looks like.
> As you can see, the left and right margins are unusually large, I can't
> `split-window-horizontally' because "Window width 7 too small (after
> splitting)", and the number returned by `window-width' is clearly wrong.
> This behavior has been around for at least two months (it has been like
> this ever since I started trying to compile emacs23). Any suggestions?

Can you post the commands you use to get to the state in the picture?

	Jan D.

Re: X window display bug?

[linbo]

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Jan Djärv <jan.h.d@swipnet.se> writes:

> Bo Lin skrev:
>> Hi emacs-devel,
>> 
>> I'm getting weird GUI behavior when compiling the latest CVS code
>> (actually I use git to pull from git://git.sv.gnu.org/emacs.git).
>> Attached is a screen shot of what it (started with emacs -Q) looks like.
>> As you can see, the left and right margins are unusually large, I can't
>> `split-window-horizontally' because "Window width 7 too small (after
>> splitting)", and the number returned by `window-width' is clearly wrong.
>> This behavior has been around for at least two months (it has been like
>> this ever since I started trying to compile emacs23). Any suggestions?
>
> Can you post the commands you use to get to the state in the picture?
>
> 	Jan D.

# emacs -Q
  (emacs starts up with no errors, but margins are unusually big)

Ctrl-x 3

Then in *scratch*:

(window-width (selected-window)) Ctrl-J

Then click on mini-buffer to bring up *Messages*.

That's all.

 -Bo

Re: X window display bug?

[Jan Djärv]

linbo skrev:
> Jan Dj�rv <jan.h.d@swipnet.se> writes:
> 
>> Bo Lin skrev:
>>> Hi emacs-devel,
>>>
>>> I'm getting weird GUI behavior when compiling the latest CVS code
>>> (actually I use git to pull from git://git.sv.gnu.org/emacs.git).
>>> Attached is a screen shot of what it (started with emacs -Q) looks like.
>>> As you can see, the left and right margins are unusually large, I can't
>>> `split-window-horizontally' because "Window width 7 too small (after
>>> splitting)", and the number returned by `window-width' is clearly wrong.
>>> This behavior has been around for at least two months (it has been like
>>> this ever since I started trying to compile emacs23). Any suggestions?
>> Can you post the commands you use to get to the state in the picture?
>>
>> 	Jan D.
> 
> # emacs -Q
>   (emacs starts up with no errors, but margins are unusually big)
> 
> Ctrl-x 3
> 
> Then in *scratch*:
> 
> (window-width (selected-window)) Ctrl-J
> 
> Then click on mini-buffer to bring up *Messages*.
> 
> That's all.

There must be more to it, for example, why are your margins so big?  Can you
check /etc/X11/app-defaults (or /usr/lib/X11/app-defaults) if there is any
Emacs or EMacs file in there?  Also do
% xrdb -query |grep -i emacs
and see if you get any lines.  Let us know what you find.

	Jan D.

Re: X window display bug?

[Bo Lin]

Hi Jan,

Jan Djärv <jan.h.d@swipnet.se> writes:
>
> There must be more to it, for example, why are your margins so big?  Can you
> check /etc/X11/app-defaults (or /usr/lib/X11/app-defaults) if there is any
> Emacs or EMacs file in there?

No.

> Also do
> % xrdb -query |grep -i emacs

$ xrdb -query | grep -i emacs
Emacs*Background:	#ffffff
Emacs*Dialog*background:	#cccccc
Emacs*Dialog*foreground:	#000000
Emacs*Foreground:	#000000
Emacs*XlwScrollBar.Background:	#cccccc
Emacs*XlwScrollBar.Foreground:	#000000
Emacs*backgroundToolBarColor:	#cccccc
Emacs*bottomToolBarShadowColor:	#cccccc
Emacs*menubar*background:	#cccccc
Emacs*menubar*foreground:	#000000
Emacs*popup*Background:	#cccccc
Emacs*popup*Foreground:	#000000
Emacs*topToolBarShadowColor:	#cccccc
Emacs.Font:	fontset-big
Emacs.Fontset-0:	-*-*-medium-r-normal--16-*-*-*-*-*-fontset-big,ascii:-*-fixed-medium-r-normal--16-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--*-*-*-*-*-*-gb2312.1980-*
Emacs.Fontset-1:	-*-*-medium-r-normal--14-*-*-*-*-*-fontset-medium,ascii:-*-fixed-medium-r-normal--14-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--14-*-*-*-*-*-gb2312.1980-*
Emacs.Fontset-2:	-*-*-medium-r-normal--14-*-*-*-*-*-fontset-xming,ascii:-*-fixed-medium-r-normal--14-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--12-*-*-*-*-*-gb2312.1980-*
Emacs.default.attributeBackground:	#ffffff
Emacs.default.attributeForeground:	#000000
Emacs.mode-line.attributeForeground:	#000000
Emacs.scroll-bar.attributeBackground:	#cccccc
Emacs.scroll-bar.attributeForeground:	#000000
Emacs.tool-bar.attributeBackground:	#cccccc
Emacs.tool-bar.attributeForeground:	#000000

But then I did

$ xrdb -remove

and retried emacs, the problem still persists. I use Emacs 22 for my
daily tasks with no problems on the same system, btw.

Also I think that the big margin is just a symptom and not the cause. As
I mentioned in my previous mails, Emacs won't allow me to
'split-window-horizontally' because 'window-width' thinks my window is
only 11 columns wide, while in fact my window is much wider than 11. And
when I try to adjust the Emacs frame width using the mouse, I can only
do so in very big increments. It appears that the bigger-than-normal
margin's width is what Emacs thinks is the width of one "column".

Any suggestions on how I should proceed from here? Thanks.

Regards,
Bo

> and see if you get any lines.  Let us know what you find.
>
> 	Jan D.

Re: X window display bug?

[Jan Djärv]

Hmm, can you try to recompile your Emacs with just -g (i.e. no -O)?

	Jan D.


Bo Lin skrev:
> Hi Jan,
> 
> Jan Djärv <jan.h.d@swipnet.se> writes:
>> There must be more to it, for example, why are your margins so big?  Can you
>> check /etc/X11/app-defaults (or /usr/lib/X11/app-defaults) if there is any
>> Emacs or EMacs file in there?
> 
> No.
> 
>> Also do
>> % xrdb -query |grep -i emacs
> 
> $ xrdb -query | grep -i emacs
> Emacs*Background:	#ffffff
> Emacs*Dialog*background:	#cccccc
> Emacs*Dialog*foreground:	#000000
> Emacs*Foreground:	#000000
> Emacs*XlwScrollBar.Background:	#cccccc
> Emacs*XlwScrollBar.Foreground:	#000000
> Emacs*backgroundToolBarColor:	#cccccc
> Emacs*bottomToolBarShadowColor:	#cccccc
> Emacs*menubar*background:	#cccccc
> Emacs*menubar*foreground:	#000000
> Emacs*popup*Background:	#cccccc
> Emacs*popup*Foreground:	#000000
> Emacs*topToolBarShadowColor:	#cccccc
> Emacs.Font:	fontset-big
> Emacs.Fontset-0:	-*-*-medium-r-normal--16-*-*-*-*-*-fontset-big,ascii:-*-fixed-medium-r-normal--16-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--*-*-*-*-*-*-gb2312.1980-*
> Emacs.Fontset-1:	-*-*-medium-r-normal--14-*-*-*-*-*-fontset-medium,ascii:-*-fixed-medium-r-normal--14-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--14-*-*-*-*-*-gb2312.1980-*
> Emacs.Fontset-2:	-*-*-medium-r-normal--14-*-*-*-*-*-fontset-xming,ascii:-*-fixed-medium-r-normal--14-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--12-*-*-*-*-*-gb2312.1980-*
> Emacs.default.attributeBackground:	#ffffff
> Emacs.default.attributeForeground:	#000000
> Emacs.mode-line.attributeForeground:	#000000
> Emacs.scroll-bar.attributeBackground:	#cccccc
> Emacs.scroll-bar.attributeForeground:	#000000
> Emacs.tool-bar.attributeBackground:	#cccccc
> Emacs.tool-bar.attributeForeground:	#000000
> 
> But then I did
> 
> $ xrdb -remove
> 
> and retried emacs, the problem still persists. I use Emacs 22 for my
> daily tasks with no problems on the same system, btw.
> 
> Also I think that the big margin is just a symptom and not the cause. As
> I mentioned in my previous mails, Emacs won't allow me to
> 'split-window-horizontally' because 'window-width' thinks my window is
> only 11 columns wide, while in fact my window is much wider than 11. And
> when I try to adjust the Emacs frame width using the mouse, I can only
> do so in very big increments. It appears that the bigger-than-normal
> margin's width is what Emacs thinks is the width of one "column".
> 
> Any suggestions on how I should proceed from here? Thanks.
> 
> Regards,
> Bo
> 
>> and see if you get any lines.  Let us know what you find.
>>
>> 	Jan D.
> 

Re: X window display bug?

[Bo Lin]

Hi Jan,

Jan Djärv <jan.h.d@swipnet.se> writes:

> Hmm, can you try to recompile your Emacs with just -g (i.e. no -O)?

Yes, this is Emacs 23.0.60.2 (as of Dec 19) compiled with CFLAGS='-g',
no -O

 -Bo

>
> 	Jan D.
>
>
> Bo Lin skrev:
>> Hi Jan,
>>
>> Jan Djärv <jan.h.d@swipnet.se> writes:
>>> There must be more to it, for example, why are your margins so big?  Can you
>>> check /etc/X11/app-defaults (or /usr/lib/X11/app-defaults) if there is any
>>> Emacs or EMacs file in there?
>>
>> No.
>>
>>> Also do
>>> % xrdb -query |grep -i emacs
>>
>> $ xrdb -query | grep -i emacs
>> Emacs*Background:	#ffffff
>> Emacs*Dialog*background:	#cccccc
>> Emacs*Dialog*foreground:	#000000
>> Emacs*Foreground:	#000000
>> Emacs*XlwScrollBar.Background:	#cccccc
>> Emacs*XlwScrollBar.Foreground:	#000000
>> Emacs*backgroundToolBarColor:	#cccccc
>> Emacs*bottomToolBarShadowColor:	#cccccc
>> Emacs*menubar*background:	#cccccc
>> Emacs*menubar*foreground:	#000000
>> Emacs*popup*Background:	#cccccc
>> Emacs*popup*Foreground:	#000000
>> Emacs*topToolBarShadowColor:	#cccccc
>> Emacs.Font:	fontset-big
>> Emacs.Fontset-0:	-*-*-medium-r-normal--16-*-*-*-*-*-fontset-big,ascii:-*-fixed-medium-r-normal--16-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--*-*-*-*-*-*-gb2312.1980-*
>> Emacs.Fontset-1:	-*-*-medium-r-normal--14-*-*-*-*-*-fontset-medium,ascii:-*-fixed-medium-r-normal--14-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--14-*-*-*-*-*-gb2312.1980-*
>> Emacs.Fontset-2:	-*-*-medium-r-normal--14-*-*-*-*-*-fontset-xming,ascii:-*-fixed-medium-r-normal--14-*-*-*-*-*-iso8859-1, chinese-gb2312:-*-*-medium-r-normal--12-*-*-*-*-*-gb2312.1980-*
>> Emacs.default.attributeBackground:	#ffffff
>> Emacs.default.attributeForeground:	#000000
>> Emacs.mode-line.attributeForeground:	#000000
>> Emacs.scroll-bar.attributeBackground:	#cccccc
>> Emacs.scroll-bar.attributeForeground:	#000000
>> Emacs.tool-bar.attributeBackground:	#cccccc
>> Emacs.tool-bar.attributeForeground:	#000000
>>
>> But then I did
>>
>> $ xrdb -remove
>>
>> and retried emacs, the problem still persists. I use Emacs 22 for my
>> daily tasks with no problems on the same system, btw.
>>
>> Also I think that the big margin is just a symptom and not the cause. As
>> I mentioned in my previous mails, Emacs won't allow me to
>> 'split-window-horizontally' because 'window-width' thinks my window is
>> only 11 columns wide, while in fact my window is much wider than 11. And
>> when I try to adjust the Emacs frame width using the mouse, I can only
>> do so in very big increments. It appears that the bigger-than-normal
>> margin's width is what Emacs thinks is the width of one "column".
>>
>> Any suggestions on how I should proceed from here? Thanks.
>>
>> Regards,
>> Bo
>>
>>> and see if you get any lines.  Let us know what you find.
>>>
>>> 	Jan D.
>>

Re: X window display bug?

[Jan Djärv]

Bo Lin skrev:
> Hi Jan,
> 
> Jan Djärv <jan.h.d@swipnet.se> writes:
> 
>> Hmm, can you try to recompile your Emacs with just -g (i.e. no -O)?
> 
> Yes, this is Emacs 23.0.60.2 (as of Dec 19) compiled with CFLAGS='-g',
> no -O
> 

Have you tried running with another font, like
% emacs -Q -fn fixed

The size of the fringes suggests tha Emacs miscalculates the font width, or 
that the font itself is buggy.

	Jan D.

Re: X window display bug?

[Bo Lin]

Hi Jan,

Jan Djärv <jan.h.d@swipnet.se> writes:

> Bo Lin skrev:
>> Hi Jan,
>>
>> Jan Djärv <jan.h.d@swipnet.se> writes:
>>
>>> Hmm, can you try to recompile your Emacs with just -g (i.e. no -O)?
>>
>> Yes, this is Emacs 23.0.60.2 (as of Dec 19) compiled with CFLAGS='-g',
>> no -O
>>
>
> Have you tried running with another font, like
> % emacs -Q -fn fixed
>

Yes, that fixes the problem! Seems it's caused by using non fixed-width
font as "default font". I don't why emacs would choose a variable-width
font as default font when -fn is not explicitly specified though,
definitely not my "Monospace" font according to fc-match:

$ fc-match monospace
VeraMono.ttf: "Bitstream Vera Sans Mono" "Roman"

Anyway, emacs23 is working for me now, thanks a lot for your help! :)

 -Bo

> The size of the fringes suggests tha Emacs miscalculates the font width, or
> that the font itself is buggy.
>
> 	Jan D.

Re: X window display bug?

[Jan Djärv]

Bo Lin skrev:
> Hi Jan,
> 
> Jan Djärv <jan.h.d@swipnet.se> writes:
> 
>> Bo Lin skrev:
>>> Hi Jan,
>>>
>>> Jan Djärv <jan.h.d@swipnet.se> writes:
>>>
>>>> Hmm, can you try to recompile your Emacs with just -g (i.e. no -O)?
>>> Yes, this is Emacs 23.0.60.2 (as of Dec 19) compiled with CFLAGS='-g',
>>> no -O
>>>
>> Have you tried running with another font, like
>> % emacs -Q -fn fixed
>>
> 
> Yes, that fixes the problem! Seems it's caused by using non fixed-width
> font as "default font". I don't why emacs would choose a variable-width
> font as default font when -fn is not explicitly specified though,
> definitely not my "Monospace" font according to fc-match:
> 
> $ fc-match monospace
> VeraMono.ttf: "Bitstream Vera Sans Mono" "Roman"

It could be a bad font, but it could also be corrupted cache files.  Try
% rm -rf ~/.font-cache* ~/.fontconfig
% sudo fc-cache --force

This rebuilds the cache files, it may take some time.

	Jan D.