Hi,

On Mon, Oct 1, 2012 at 9:13 AM, minhsien0330 <minhsien0...@gmail.com> wrote:
> Dear Alexandre and Jehan:
>
> My tablet is "np10 10.1 tablet PC" :
> http://www.yiynova.com/En/proddetails.php?proid=8&clsid=4?%3E
> I am a Debian Linux user, the tablet screen and pen was well supported by
> Linux kernel (3.2.0) and Xorg(1.12.1.902), I posted the /var/log/Xorg.0.log
> at the end of this mail.
>

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.

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.

> I had checked the setting in Input device, the input device (pen) of this
> tablet had been set as "Screen" mode, and I can drawing with pen pressure,
> So I think the tablet and pen was enabled in Gimp.

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 Gimp 2.4.7, this "No response" problem only happened in the second time I
> opened and tried to type filename in "Save dialog". The reproduce procedure
> is:
[...]
> Besides, I found, in Gimp-2.6, "sometimes" the toolbox became "unclickable"
> for tablet pen, but drawing in the image window with the tablet pen still
> worked fine at the same time. It happened randomly,  I cannot find the rule
> so far. After searching on Google, I guess this gimp-2.6 problem is similar
> to this bug report:
> https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/556670
>

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

>
> Do I need to offer any information?
> Thank you so much :)
>
> Regards,
> Minhsien
>
> ---
> The  following information of this tablet device in /var/log/Xorg.0.log was:
> [    14.811] (II) config/udev: Adding input device          WALTOP
> Tablet     (/dev/input/event1)
> [    14.811] (**)          WALTOP             Tablet    : Applying
> InputClass "evdev tablet catchall"
> [    14.811] (II) Using input driver 'evdev' for '         WALTOP
> Tablet    '
> [    14.811] (**)          WALTOP             Tablet    : always reports
> core events
> [    14.811] (**) evdev:          WALTOP             Tablet    : Device:
> "/dev/input/event1"
> [    14.811] (--) evdev:          WALTOP             Tablet    : Vendor
> 0x172f Product 0x5a
> [    14.811] (--) evdev:          WALTOP             Tablet    : Found 1
> mouse buttons
> [    14.811] (--) evdev:          WALTOP             Tablet    : Found
> absolute axes
> [    14.811] (--) evdev:          WALTOP             Tablet    : Found x and
> y absolute axes
> [    14.811] (--) evdev:          WALTOP             Tablet    : Found
> absolute tablet.
> [    14.811] (II) evdev:          WALTOP             Tablet    : Configuring
> as tablet
> [    14.811] (**) evdev:          WALTOP             Tablet    :
> YAxisMapping: buttons 4 and 5
> [    14.811] (**) evdev:          WALTOP             Tablet    :
> EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
> [    14.811] (**) Option "config_info"
> "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input1/event1"
> [    14.811] (II) XINPUT: Adding extended input device "         WALTOP
> Tablet    " (type: TABLET, id 10)
> [    14.812] (II) evdev:          WALTOP             Tablet    : initialized
> for absolute axes.
> [    14.812] (**)          WALTOP             Tablet    : (accel) keeping
> acceleration scheme 1
> [    14.812] (**)          WALTOP             Tablet    : (accel)
> acceleration profile 0
> [    14.812] (**)          WALTOP             Tablet    : (accel)
> acceleration factor: 2.000
> [    14.812] (**)          WALTOP             Tablet    : (accel)
> acceleration threshold: 4
> [    14.813] (II) config/udev: Adding input device          WALTOP
> Tablet     (/dev/input/mouse0)
>
>
>
>
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