Gaomon Pen Tablet Stops Functioning #101807

New Issue

Kaze Sequeris · 2022-10-13T20:41:10+02:00

Kaze Sequeris commented

2022-10-13 20:41:10 +02:00

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: AMD Radeon R9 200 / HD 7900 Series ATI Technologies Inc. 4.5.13596 Core Profile Context 20.10.35.02 27.20.1034.6

Blender Version
Broken: version: 3.3.1, branch: master, commit date: 2022-10-04 18:35, hash: b292cfe5a9
Worked: Not sure, not since 3.0 at least.

Short description of error
Using Gaomon pen tablet (M10K with latest drivers, 16.0.0.37)
Pen tablet stops functioning under various circumstances.
Pen stops functioning only in Blender. When Blender is not active window, pen resumes function. Pen will not function again inside Blender until all instances of Blender are completely closed and reopened. Starting a new empty scene from file menu does not fix it. Interestingly, only the motion itself is disabled - the buttons on the pen and tablet will still work (right clicking with the pen still opens the context menu, hotkeys still perform function, ect).

Perhaps unrelated, might be a different bug, but after rotating the camera with the pen middle-mouse, any attempt to rotate with the mouse middle-mouse button does so in clunky steps, instead of smoothly. Alt-tabbing to a different window then alt-tabbing back fixes this and makes it smooth again.

Three tested things so far that break the tablet:

Subdividing an Object
Using the subdivision modifier is the most consistent, and breaks the tablet with lower face count of 23,000.
Raising Face Count Too High
Without using subdivision, extruding and loopcutting a cube enough times breaks the tablet at around 120,000 faces
Enabling a hidden Collection
Enabling a disabled collection with more than one object. This doesn't always happen. Collection tested has 3 objects (even when hidden in viewport) with no modifiers and face count below 20,000

Simply loading a save with one of the above already saved also breaks the pen function, making progress impossible.

Exact steps for others to reproduce the error
TabletBug post failure.blend

Simply loading "TabletBugPostFailure.blend" produces error. Pen will not move cursor at all.

TabletBug Pre failure.blend

After loading "TabletBugPreFailure.blend", add a subdivision modifier to the rounded cube object. Pen will move cursor before subdivision, but will not move after the modifier is added.

Tablet Bug character file.blend

After loading "TabletBugCharacterFile.blend", add a subdivision modifier to the character "body" object. Pen stops functioning

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: AMD Radeon R9 200 / HD 7900 Series ATI Technologies Inc. 4.5.13596 Core Profile Context 20.10.35.02 27.20.1034.6 **Blender Version** Broken: version: 3.3.1, branch: master, commit date: 2022-10-04 18:35, hash: `b292cfe5a9` Worked: Not sure, not since 3.0 at least. **Short description of error** Using Gaomon pen tablet (M10K with latest drivers, 16.0.0.37) Pen tablet stops functioning under various circumstances. Pen stops functioning only in Blender. When Blender is not active window, pen resumes function. Pen will not function again inside Blender until all instances of Blender are completely closed and reopened. Starting a new empty scene from file menu does not fix it. Interestingly, only the motion itself is disabled - the buttons on the pen and tablet will still work (right clicking with the pen still opens the context menu, hotkeys still perform function, ect). Perhaps unrelated, might be a different bug, but after rotating the camera with the pen middle-mouse, any attempt to rotate with the mouse middle-mouse button does so in clunky steps, instead of smoothly. Alt-tabbing to a different window then alt-tabbing back fixes this and makes it smooth again. Three tested things so far that break the tablet: - Subdividing an Object Using the subdivision modifier is the most consistent, and breaks the tablet with lower face count of 23,000. - Raising Face Count Too High Without using subdivision, extruding and loopcutting a cube enough times breaks the tablet at around 120,000 faces - Enabling a hidden Collection Enabling a disabled collection with more than one object. This doesn't always happen. Collection tested has 3 objects (even when hidden in viewport) with no modifiers and face count below 20,000 Simply loading a save with one of the above already saved also breaks the pen function, making progress impossible. **Exact steps for others to reproduce the error** [TabletBug post failure.blend](https://archive.blender.org/developer/F13674354/TabletBug_post_failure.blend) Simply loading "TabletBugPostFailure.blend" produces error. Pen will not move cursor at all. [TabletBug Pre failure.blend](https://archive.blender.org/developer/F13674364/TabletBug_Pre_failure.blend) After loading "TabletBugPreFailure.blend", add a subdivision modifier to the rounded cube object. Pen will move cursor before subdivision, but will not move after the modifier is added. [Tablet Bug character file.blend](https://archive.blender.org/developer/F13674382/Tablet_Bug_character_file.blend) After loading "TabletBugCharacterFile.blend", add a subdivision modifier to the character "body" object. Pen stops functioning

Kaze Sequeris commented

2022-10-13 20:41:10 +02:00

Added subscriber: @KazeSequeris

Omar Emara commented

2022-10-14 10:31:52 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-10-14 10:31:52 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Omar Emara commented

2022-10-14 10:31:52 +02:00

Does changing the tablet API in Preferences > Input > Tablet API make any difference? Does any of the options work better?

Kaze Sequeris commented

2022-10-14 11:42:08 +02:00

It appears that yes, changing the API has an effect. Both options will stop the error. Pen even still works when switching back to automatic during the session, but will stop working again when loading a new file while automatic is saved in preferences. Automatic is the only setting that breaks the pen.

Thank you for pointing these settings out to me, switching the API means I can continue to work!

In the event more testing brings up the same/very similar error, should I reply to this thread with it, or would that require I open a new task?

It appears that yes, changing the API has an effect. Both options will stop the error. Pen even still works when switching back to automatic during the session, but will stop working again when loading a new file while automatic is saved in preferences. Automatic is the only setting that breaks the pen. Thank you for pointing these settings out to me, switching the API means I can continue to work! In the event more testing brings up the same/very similar error, should I reply to this thread with it, or would that require I open a new task?

Omar Emara commented

2022-10-14 12:37:05 +02:00

Added subscriber: @PrototypeNM1

Omar Emara commented

2022-10-14 12:37:05 +02:00

@PrototypeNM1 Any idea about the behavior described in the comment above where Automatic tablet API selection can cause issues?

@KazeSequeris If it is the same issue, you can just comment back on this report and we can reinvestigate.

@PrototypeNM1 Any idea about the behavior described in the comment above where Automatic tablet API selection can cause issues? @KazeSequeris If it is the same issue, you can just comment back on this report and we can reinvestigate.

Alex commented

2022-10-15 05:10:14 +02:00

Added subscriber: @dyonisius

Alex commented

2022-10-15 05:10:14 +02:00

I'm having the exact same problem with a Gaomon s620, anything that causes a heavy load crashes the tablet motion, setting tablet API to wintab still crashes, it only stops crashing when I set to Windows Ink

Nicholas Rishel commented

2022-10-15 06:46:16 +02:00

Could you run blender --debug-wintab and recreate the issue, then paste the console log here and link the paste to this report?

Could you run `blender --debug-wintab` and recreate the issue, then paste the console log [here](https://developer.blender.org/paste/edit/form/default/) and link the paste to this report?

Alex commented

2022-10-15 17:26:30 +02:00

There you go
Debug

There you go [Debug ](https://developer.blender.org/P3257)

Thomas Dinges commented

2022-12-15 16:41:36 +01:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Nicholas Rishel commented

2022-12-18 00:12:11 +01:00

At a glance this sounds like input buffer filled and we didn't get a message to empty it. Will have to investigate.

At a glance this *sounds* like input buffer filled and we didn't get a message to empty it. Will have to investigate.

Nicholas Rishel self-assigned this 2022-12-18 00:12:40 +01:00

Romn commented

2023-09-01 11:39:17 +02:00

Is there any news about this? I have a Gaomon s620 and the pen pressure stops working when opening the program or when there are heavy loads.
It only happens in Blender 3.0 to 3.6, version 2.93 this does not happen.

Is there any news about this? I have a Gaomon s620 and the pen pressure stops working when opening the program or when there are heavy loads. It only happens in Blender 3.0 to 3.6, version 2.93 this does not happen.

shou-ge commented

2023-09-15 15:56:27 +02:00

I have a gaomon tablet, I meet the same issue, what happened! any solution?

I have a [gaomon tablet](https://pctechtest.com/best-gaomon-drawing-tablets), I meet the same issue, what happened! any solution?

Romn commented

2023-10-17 02:16:11 +02:00

Still no solution :,(

Kaze Sequeris commented

2023-10-23 08:20:11 +02:00

I can't speak for the devs of course, but in my case, changing the tablet API in Preferences > Input > Tablet API to something other than 'automatic' fixed the issue for me. Might need to test each option in turn, but if that works, at least you can continue using the pen while they figure out what exactly is wrong. If not, maybe open a new ticket? I'm sure the devs are working on fixes for things and will get to it when they can, but more attention might bump it up a little on the priority list.

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Gaomon Pen Tablet Stops Functioning #101807