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2 problems with Intuos tablet and GIMP (Slow input/lag and Tablet Eraser not working)

Sep 21, 2014, 01:24
Post: #1
2 problems with Intuos tablet and GIMP (Slow input/lag and Tablet Eraser not working)
So, as I mentioned in the title, I use a graphics tablet (INTUOS CTL-480 model) with GIMP, and I have encountered some problems. I'm using GIMP 2.8.14 on Windows 8.1 64 bit, with the latest driver for my Graphics Tablet, which is currently Driver 6.3.9w3, released on August 18th 2014.


More information on the problems I have encountered:
I have fully configured my Wacom Tablet with GIMP. Both "WACOM Tablet Eraser" and "WACOM Tablet Pressure Stylus" are set to screen mode. Now you probably know already that the pen that comes with the CTL-480 model has no actual eraser, so I use one of the pen's buttons as an Eraser (I did that by going to my Pen Settings, details on the image below).

http://imgur.com/ojQX7X9
The settings are the same for every tab (That is, "All other", "gimp-2.8", "Photoshop").

As I said above, I have configured GIMP and it recognizes the Stylus and the Eraser as two different input devices, as it should (as far as I know). On GIMP, I have successfully selected the Eraser tool with "WACOM Tablet Eraser". However, when I try to erase something, the tool does not work. The core pointer moves, the eraser's "brush outline" does not move and nothing is erased. I have also tried on a PhotoShop trial with the same tablet settings, and it actually works, so I am fairly certain that it's not the tablet. I've also tried on a second computer, same OS, same tablet, both programs, same results. If it helps, every time I open GIMP, the first time I push the button to use "WACOM Tablet Eraser", the right-click menu pops up, for some reason. It doesn't do that after it's been used at least once after GIMP is open.

Now for the second, and not as important problem as the eraser problem, is what I called "slow input/lag" in the description. When I'm using "WACOM Tablet Pressure Stylus" on GIMP on a high resolution (My native resolution is 1920x1080), the "brush outline", as well as the actual drawing (Well, it's more like painting, rather than drawing, since that is the only time I'm moving the pen so fast) falls behind, or lags (Not the "Core Pointer" though). As such, this is annoying when drawing, since it can cause a lot of accidental errors. I have tried disabling the brush outline, and it indeed speeds things up, however, not having a brush outline and full resolution makes things hard for me. I've tried the PhotoShop trial I mentioned above to see if it has the same problem, and it does not. Which is why I believe GIMP may be at fault here.


Those are the problems I encountered. I've searched, but I didn't find solutions to my problems. I am not a native English speaker, so I would like to apologize for any incorrect wording in this post. Thank you in advance for your precious time and support,

Xarizzar
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Sep 21, 2014, 07:53 (This post was last modified: Sep 21, 2014 07:55 by jeehyun.)
Post: #2
RE: 2 problems with Intuos tablet and GIMP (Slow input/lag and Tablet Eraser not working)
Gimp is mainly for photo not paint.
So gimp may not work well with tablet.
How about trying krita? It supports windows, linux, and osx.
Open source lovers use gimp with krita.
krita.org
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Sep 21, 2014, 11:47
Post: #3
RE: 2 problems with Intuos tablet and GIMP (Slow input/lag and Tablet Eraser not working)
ofnuts Wrote:1) eraser: can you show us: Windows>Dockable dialogs>Device status
http://i.imgur.com/6WVTjdz.png

ofnuts Wrote:2) performance: yes, Gimp 2.8 paint performance isn't good.
I heard yesterday that gimp 2.6 does work better with tablets (despite the fact that gimp 2.6 has to be opened by the tablet and not the mouse in order for the tablet to be detected) and people were hesitant to update... So I installed it (without deleting 2.8). In fact, there is no lag with 2.6. The Eraser problem is kind of different, but it is still there. It actually erases when I'm using it, however the moment when I release the button of my pen I have bound the eraser with, the erasing is undone. Here is the Device Status for 2.6.12: http://i.imgur.com/O3WjyjP.png

jeehyun Wrote:Gimp is mainly for photo not paint.
So gimp may not work well with tablet.
How about trying krita? It supports windows, linux, and osx.
Open source lovers use gimp with krita.
krita.org
Some time after I learned about gimp 2.6, I learned about this. It doesn't seem half bad, actually, thanks for recommending it. I haven't encountered any problems with it yet, which is good.

That said though, I'd still like to find a solution for GIMP, if possible. Doesn't matter to me which version the solution is for.

Thank you both for your replies Big Grin
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Sep 21, 2014, 16:10 (This post was last modified: Sep 21, 2014 16:11 by Xarizzar.)
Post: #4
RE: 2 problems with Intuos tablet and GIMP (Slow input/lag and Tablet Eraser not working)
ofnuts Wrote:1) there is no need to start Gimp using the tablet to see it detected by Gimp. But it must be plugged in before Gimp starts, because Gimp won't dynamically "discover" it later.
Oh, I heard that (needing to open GIMP with the tablet) was a bug in 2.6. I guess I was wrong then.

ofnuts Wrote:2) is the eraser working when your assign it to the "Stylus" tip?
Yes, I can confirm that it works on both GIMP 2.6.10 and GIMP 2.8.14, if I assign it to the "Stylus" tip. Also, I've just tried to assign a brush tool with the button I have bound the eraser with, and I can confirm that on GIMP 2.6.10, it draws but it undoes the drawing the moment I release the button. On GIMP 2.8.14, it doesn't draw anything at all, just like it doesn't erase anything at all when I assign to it the Eraser tool. So tools only work when assigned on the stylus tip. I believe it's safe to assume that no tools will work if I try to use them while holding the Eraser button.

ofnuts Wrote:Btw, in the Wacom Bamboo tablets (and, from the name displayed, likely also on the Intuos ones) the "Eraser" end of the stylus isn't pressure sensitive, and so is of little use, even for the eraser.
I don't think this is of any concern to me. I've mentioned in my first post that I use the "INTUOS CTL-480" WACOM tablet, which has nothing to do with Bamboo WACOM tablets, as far as I know. I've heard that a Bamboo pen comes with the CTH-480 one, but I didn't get one when I got my CTL-480 tablet.
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