Blender crashes on refocus #59470

New Issue

Fabian Mohr · 2018-12-16T21:24:51+01:00

Fabian Mohr commented

2018-12-16 21:24:51 +01:00

System Information
Operating system: Windows 10 x64
Graphics card: Nvidia GTX 1060
Processor: Intel Core i5 3570

Blender Version
Broken: 2.79-git.4e3562f45ad, 2.79-git.968bf0df148, 2.76 to 2.80 from blender download page. All same behavior.
Worked: none

Short description of error
Blender crashes when switching back into focus with ERROR_ACCESS_VIOLATION

Exact steps for others to reproduce the error
I open blender. I switch to another window and back into blender via alt-tab, by clicking, or just double-tapping the win-key, and blender crashes instantly.

No Error log generated. Running in CMD just gives me this: EXCEPTION_ACCESS_VIOLATION
I tried running blender from console with --factory-startup, no change
I tried both .zip and .msi versions, none worked
I tried running versions from 2.76 up to 2.80, always same behavior
I tried opencl.dll from other solutions, did not work
I updated to newest drivers (from 385.xx to 417.35), nothing changed
I tried turning off my anti-vir (windows defender), did not work
I am slowly going mad

Is there any way I can get a better error msg?
Any help or stabs to this would be highly appreciated. Screenshot of cuda-z and cpu-z.

**System Information** Operating system: Windows 10 x64 Graphics card: Nvidia GTX 1060 Processor: Intel Core i5 3570 **Blender Version** Broken: 2.79-git.4e3562f45ad, 2.79-git.968bf0df148, 2.76 to 2.80 from blender download page. All same behavior. Worked: none **Short description of error** Blender crashes when switching back into focus with ERROR_ACCESS_VIOLATION **Exact steps for others to reproduce the error** I open blender. I switch to another window and back into blender via alt-tab, by clicking, or just double-tapping the win-key, and blender crashes instantly. - No Error log generated. Running in CMD just gives me this: EXCEPTION_ACCESS_VIOLATION - I tried running blender from console with --factory-startup, no change - I tried both .zip and .msi versions, none worked - I tried running versions from 2.76 up to 2.80, always same behavior - I tried opencl.dll from other solutions, did not work - I updated to newest drivers (from 385.xx to 417.35), nothing changed - I tried turning off my anti-vir (windows defender), did not work - I am slowly going mad Is there any way I can get a better error msg? Any help or stabs to this would be highly appreciated. Screenshot of cuda-z and cpu-z. ![Screenshot 2018-12-16 21.20.22.png](https://archive.blender.org/developer/F5974089/Screenshot_2018-12-16_21.20.22.png) ![Screenshot 2018-12-16 21.20.58.png](https://archive.blender.org/developer/F5974091/Screenshot_2018-12-16_21.20.58.png)

Fabian Mohr commented

2018-12-16 21:24:51 +01:00

Added subscriber: @tahtackle

blender-admin commented

2018-12-16 21:24:51 +01:00

#73315 was marked as duplicate of this issue

blender-admin commented

2018-12-16 21:24:51 +01:00

#64539 was marked as duplicate of this issue

Sebastian Parborg commented

2018-12-17 14:54:39 +01:00

Added subscribers: @fclem, @ZedDB

Sebastian Parborg commented

2018-12-17 14:54:39 +01:00

Have you tried running blender and time previously on that machine? If not then I think this might be a bug with Windows itself. I think there was some use that had this problem too. But it happened have a windows update.

@fclem I can't seem to find that task. Do you know which one I'm talking about?

Have you tried running blender and time previously on that machine? If not then I think this might be a bug with Windows itself. I think there was some use that had this problem too. But it happened have a windows update. @fclem I can't seem to find that task. Do you know which one I'm talking about?

Fabian Mohr commented

2019-01-09 15:14:04 +01:00

Blenders wasn't installed previously on that machine. I fixed it by removing the "WinTab32.dll" file in C:\Windows\System32. But removing dll-files does not seem like a proper way to fix issues. Here's to hoping it won't break my PC.

Brecht Van Lommel commented

2019-01-09 17:03:51 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-01-09 17:03:51 +01:00

That's a DLL for pen tablet support. Are you using a pen tablet? If so, does disconnecting it avoid the crash?

Fabian Mohr commented

2019-01-09 18:21:01 +01:00

No tablet was connected during any of this. I used a Tablet with proprietary drivers on thic PC before, but not during these issues.

Brecht Van Lommel commented

2019-05-21 11:43:08 +02:00

Added subscriber: @DavidSnelsonSmith

Germano Cavalcante commented

2020-01-29 19:14:43 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-01-29 19:14:43 +01:00

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

Germano Cavalcante commented

2020-01-29 19:14:43 +01:00

I cannot reproduce the problem in blender 2.79b or blender 2.83.

Operating system: Windows-10-10.0.18941 64 Bits
Graphics card: Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13559 Core Profile Context 26.20.12028.2

Is this still a problem in the latest builds?
https://builder.blender.org/download/

I cannot reproduce the problem in blender 2.79b or blender 2.83. **Operating system:** Windows-10-10.0.18941 64 Bits **Graphics card:** Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13559 Core Profile Context 26.20.12028.2 Is this still a problem in the latest builds? https://builder.blender.org/download/

Brecht Van Lommel changed title from ~~Blender crashes on refocus~~ to Blender crashes on refocus with tablet active

2020-02-03 11:45:47 +01:00

Brecht Van Lommel commented

2020-02-03 11:46:36 +01:00

Added subscriber: @ArthurPholax

Brecht Van Lommel commented

2020-02-03 11:46:55 +01:00

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

Brecht Van Lommel commented

2020-02-03 11:46:55 +01:00

We haven't been able to reproduce this ourselves, but we know it's a bug given the number of reports.

Arthur commented

2020-02-03 12:11:14 +01:00

I don't think that #73315 and this bug are the same, because in #73315 it only appears when I open any other Blender window except the main, and only when using tablet.
For example, with connected tablet everything works fine using a mouse until I move cursor with the tablet. And not every tablet behaves the same. Both of my tablets are using their drivers, not (only) windows built-in.
Also, #73315 didn't appear on pre-2.8 versions.

Maybe there is the way I could get any info from logs or CMD?
Also, I will try to replicate THIS bug on my machine later, but I didn't get any crashes from just switching applications.

I don't think that #73315 and this bug are the same, because in #73315 it only appears when I open any other Blender window except the main, and only when using tablet. For example, with connected tablet everything works fine using a mouse until I move cursor **with the tablet**. And not every tablet behaves the same. Both of my tablets are using their drivers, not (only) windows built-in. Also, #73315 **didn't appear on pre-2.8 versions.** Maybe there is the way I could get any info from logs or CMD? Also, I will try to replicate THIS bug on my machine later, but I didn't get any crashes from just switching applications.

Brecht Van Lommel commented

2020-02-03 14:00:23 +01:00

Ok, I'll keep them separate until we're know. Still seems likely to me that both are crashing due the same bug in tablet API access.

Brecht Van Lommel changed title from ~~Blender crashes on refocus with tablet active~~ to Blender crashes on refocus

2020-02-03 14:00:48 +01:00

Arthur commented

2020-02-03 14:45:47 +01:00

I just had luck to test on another PC.
Win 10, Intel i5, no dedicated GPU.

Tried to switch between applications - nothing crashes. Can't reproduce #59470.
Still crashes as in #73315.

But seems like the bugs are really closely related as I got an error message

Error : EXCEPTION_ACCESS_VIOLATION
Address : 0x00007FFE82C14943
Module : C:\WINDOWS\SYSTEM32\Wintab32.dll

Renaming (or deleting) Wintab32.dll fixes #73315 too.

I just had luck to test on another PC. Win 10, Intel i5, no dedicated GPU. Tried to switch between applications - nothing crashes. Can't reproduce #59470. Still crashes as in #73315. But seems like the bugs are really closely related as I got an error message Error : EXCEPTION_ACCESS_VIOLATION Address : 0x00007FFE82C14943 Module : C:\WINDOWS\SYSTEM32\Wintab32.dll Renaming (or deleting) Wintab32.dll fixes #73315 too.

Brecht Van Lommel commented

2020-04-08 12:54:49 +02:00

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

Brecht Van Lommel commented

2020-04-08 12:54:49 +02:00

There have been significant changes to tablet handling on Windows today. Can you verify if this is still an issue in the latest build?
https://builder.blender.org/download/

There have been significant changes to tablet handling on Windows today. Can you verify if this is still an issue in the latest build? https://builder.blender.org/download/

Fabian Mohr commented

2020-04-08 13:16:08 +02:00

Hi, I'm sorry but I had to reinstall Windows on my PC (so no driver) and am no longer using (or owning) the tablet. I'm afraid I won't be able to verify, sorry for that.

Germano Cavalcante commented

2020-04-17 16:58:45 +02:00

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

Germano Cavalcante closed this issue

2020-04-17 16:58:45 +02:00

Germano Cavalcante self-assigned this 2020-04-17 16:58:45 +02:00

Germano Cavalcante commented

2020-04-17 16:58:45 +02:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.
Thanks for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks for the report. If the problem persists please open a new report with the required information.

Martin commented

2020-06-05 21:34:16 +02:00

Added subscriber: @McMartin

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Blender crashes on refocus #59470