2012/10/1 Jehan Pagès <jehan.marmott...@gmail.com>

> Are you using the linuxwacom X driver (which has some support for
> Waltop tablets, I see:
> http://linuxwacom.git.sourceforge.net/git/gitweb.cgi?p=linuxwacom/xf86-input-wacom;a=blob;f=src/wcmUSB.c;h=9f327ba6b0210a04933da22861750d304d7edb86;hb=HEAD#l172
> and your tablet is apparently a Walcom one sold under another brand)
> or the X driver from the vendor itself
> (http://www.waltop.com.tw/download.asp?lv=0&id=2 which is apparently a
> fork off of linuxwacom 0.8.4, according to linuxwacom sources)?
> Note that I don't see your device (0x5a) in linuxwacom list. So I
> guess the answer is that you are using the vendor driver. Just to be
> sure though, would be worth checking.

Dear Jehan:

I did not install the driver from the vendor or xserver-xorg-input-wacom, I
am not sure it's wacom driver or not.
The dmesg and Xorg.0.log seems not talking about this, do you know how to
check the driver?

> The problem may indeed come from the driver rather than Gimp,
> especially if you use the wrong one (do you use the pen a lot outside
> Gimp? Do you have similar issues elsewhere?). Same questions could
> apply to GTK: if you have similar issues on other programs, but only
> GTK ones, may be a bug in the GTK graphical toolkit.

Similar problem happened in Mypaint, but the problem happened only when
opening Preference dialog (sometimes), it never happened with Save dialog.
Except for Mypaint, no other GTK application had this problem, eg. leafpad.

> For this kind of tablet, you see only a pen input device? Not a pad
> too? (I know this is a special type of machine, where the pad is also
> the screen. So the question is maybe stupid, but as I cannot test
> myself...)

In "Input" dialog, there are only 2 device:
(1) Virtual core xtest pointer
(2) Waltop Tablet

> I see you mention Gimp 2.4.7 and 2.6. Have you tried with 2.8 (last
> stable version 2.8.2)? Maybe that's fixed there. That would be worth
> installed (or compiled if Debian has no package yet maybe).
> I would say that if there is no easy fix to your issue (like a
> configuration one that we tried), nor a driver issue, installing the
> latter version of Gimp should be the next step to diagnose.
> Jehan

Thanks for your reminding, I had tested this problem with gimp 2.8.2
The pen worked fine with gimp-2.8.2, I have migrated to gimp-2.8.
Note: this "No response to tablet pen" problem only happened when meeting
the About dialog (Help > About).

Thanks you.


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