Impossible to copy/paste data between different Blender instances that are using different temp directories #82243

New Issue

Georg K · 2020-10-30T02:20:26+01:00

Georg K commented

2020-10-30 02:20:26 +01:00

System Information

Operating system:	Linux-5.8.16-2-MANJARO-x86_64-with-glibc2.2.5 64 Bits
	Windows 10
Graphics card: AMD VERDE (DRM 2.50.0, 5.8.16-2-MANJARO, LLVM 10.0.1) X.Org 4.5 (Core Profile) Mesa 20.1.8

Blender Version
Broken: version: 2.92.0 Alpha, branch: master, commit date: 2020-10-29 23:21, hash: 81a0fffb2d
Worked: Never

Short description of error
It is not possible to copy/paste data between two Blender instances that use a different Temporary Files path.

Exact steps for others to reproduce the error

Open two instances of Blender (regardless of whether they are the same version or different versions)
In the destination instance, delete all objects and set a custom path for Temporary Files (in Blender Preferences - File Paths)
In the other instance, Ctrl-C to copy default cube,
In the destination instance, Ctrl-V to paste,
It is not pasted, message "no objects to paste"

**System Information** |Operating system:|Linux-5.8.16-2-MANJARO-x86_64-with-glibc2.2.5 64 Bits | -- | -- | ||Windows 10 Graphics card: AMD VERDE (DRM 2.50.0, 5.8.16-2-MANJARO, LLVM 10.0.1) X.Org 4.5 (Core Profile) Mesa 20.1.8 **Blender Version** Broken: version: 2.92.0 Alpha, branch: master, commit date: 2020-10-29 23:21, hash: `81a0fffb2d` Worked: Never **Short description of error** It is not possible to copy/paste data between two Blender instances that use a different `Temporary Files` path. **Exact steps for others to reproduce the error** - Open two instances of Blender (regardless of whether they are the same version or different versions) - In the destination instance, delete all objects and set a custom path for Temporary Files (in Blender Preferences - File Paths) - In the other instance, Ctrl-C to copy default cube, - In the destination instance, Ctrl-V to paste, It is not pasted, message "no objects to paste"

Georg K commented

2020-10-30 02:20:26 +01:00

Added subscriber: @georgK

blender-admin commented

2020-10-30 02:20:26 +01:00

#89288 was marked as duplicate of this issue

Germano Cavalcante commented

2020-10-30 04:09:23 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-10-30 04:09:23 +01:00

I cannot reproduce the problem.
Here I can copy objects from both 2.79 and 2.91 and paste in 2.92
The opposite is also possible.
But I was only able to test on windows.
Is there a permissions conflict on the file?

Operating system: Windows-10-10.0.18941 64 Bits
Graphics card: Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13596 Core Profile/Debug Context 20.10 27.20.1034.6

I cannot reproduce the problem. Here I can copy objects from both 2.79 and 2.91 and paste in 2.92 The opposite is also possible. But I was only able to test on windows. Is there a permissions conflict on the file? ---- **Operating system:** Windows-10-10.0.18941 64 Bits **Graphics card:** Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13596 Core Profile/Debug Context 20.10 27.20.1034.6

Nicholas Hawkes commented

2020-10-30 06:18:26 +01:00

Added subscriber: @nicholashawkes

Georg K commented

2020-10-30 13:19:11 +01:00

The permissions of the executables are identical and I did not change anything permission related. Also tested on a second Manjaro system and it's the same there, too.

Philipp Oeser commented

2020-11-02 14:40:36 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-11-02 14:40:36 +01:00

Also cannot reproduce here

**System Information**
Operating system: Linux-5.8.16-300.fc33.x86_64-x86_64-with-fedora-33-Thirty_Three 64 Bits
Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.66
version: 2.92.0 Alpha, branch: master, commit date: 2020-11-02 09:11, hash: `rBcc09c0d0484b`

Also cannot reproduce here ``` **System Information** Operating system: Linux-5.8.16-300.fc33.x86_64-x86_64-with-fedora-33-Thirty_Three 64 Bits Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.66 version: 2.92.0 Alpha, branch: master, commit date: 2020-11-02 09:11, hash: `rBcc09c0d0484b` ```

Georg K commented

2020-11-02 16:29:18 +01:00

The problem seems to be in the earlier versions, not in 2.92: if I run the earlier version with --factory-startup I can copy/paste an object to 2.92. Without that, although I get the message "Copied 1 selected object(s)", I can only paste to the same blender version, e.g. copy in 2.90, can't paste in 2.92 but can paste to another instance of 2.90.
Deactivating all plugins (without restarting blender) in the earlier version did not help though.

The problem seems to be in the earlier versions, not in 2.92: if I run the earlier version with --factory-startup I can copy/paste an object to 2.92. Without that, although I get the message "Copied 1 selected object(s)", I can only paste to the same blender version, e.g. copy in 2.90, can't paste in 2.92 but can paste to another instance of 2.90. Deactivating all plugins (without restarting blender) in the earlier version did not help though.

Richard Antalik commented

2020-11-09 20:29:16 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-11-09 20:29:16 +01:00

Changed status from 'Needs Triage' to: 'Archived'

Richard Antalik closed this issue

2020-11-09 20:29:16 +01:00

Richard Antalik self-assigned this 2020-11-09 20:29:16 +01:00

Richard Antalik commented

2020-11-09 20:29:16 +01:00

In #82243#1046296, @georgK wrote:
The problem seems to be in the earlier versions, not in 2.92

We can't do anything about earlier versions really.

Deactivating all plugins (without restarting blender) in the earlier version did not help though.

Does it work when you deactivate plugins and then restart?

Are you sure that keymap for copy is assigned correctly?

If you say that this works with --factory-startup it doesn't really look like bug in Blender.
Since we are unable to reproduce this, I will close this report. If you find a way to reproduce this problem starting from factory settings, we can reopen. Thanks for reporting anyway.

> In #82243#1046296, @georgK wrote: > The problem seems to be in the earlier versions, not in 2.92 We can't do anything about earlier versions really. >Deactivating all plugins (without restarting blender) in the earlier version did not help though. Does it work when you deactivate plugins and then restart? Are you sure that keymap for copy is assigned correctly? If you say that this works with `--factory-startup` it doesn't really look like bug in Blender. Since we are unable to reproduce this, I will close this report. If you find a way to reproduce this problem starting from factory settings, we can reopen. Thanks for reporting anyway.

Georg K commented

2020-11-09 21:34:31 +01:00

Pasting of the copied objects worked after factory resetting the originating blender instance event though I reactivated all plugins that were active before.
I never touched the keymap, and there was the "object copied to buffer" notification (and I can paste to a different instance of the same version), so the object was actually copied.

Some versions seem to share different copy buffers, like I can copy from 2.79 to 2.90 but not to 2.92, not from 2.92 to 2.79 or 2.90, from 2.79 to 2.83 and 2.90 but not 2.92, from 2.92 to 2.92...
It's quite the mystery.
I guess I just have to factory reset all my versions and reactivate all plugins and the issue will be gone.

Pasting of the copied objects worked after factory resetting the originating blender instance event though I reactivated all plugins that were active before. I never touched the keymap, and there was the "object copied to buffer" notification (and I can paste to a different instance of the same version), so the object was actually copied. Some versions seem to share different copy buffers, like I can copy from 2.79 to 2.90 but not to 2.92, not from 2.92 to 2.79 or 2.90, from 2.79 to 2.83 and 2.90 but not 2.92, from 2.92 to 2.92... It's quite the mystery. I guess I just have to factory reset all my versions and reactivate all plugins and the issue will be gone.

Georg K commented

2021-01-30 17:47:00 +01:00

So I found the reason of this issue: I have set a custom path for Temporary Files (in Blender Preferences - File Paths) in most older Blender versions that I had not set in some newer versions.
Blender does not seem to use the system clipboard but its Temporary Files location for storing copied content, so there were two separate clipboards, one using the default location and one using my custom location.
BTW: saving Auto Saves to /tmp by default which is automatically deleted upon boot isn't a good preset - if the computer crashes, the Auto Save is lost, too, so I had to change the directory.

So I found the reason of this issue: I have set a custom path for Temporary Files (in Blender Preferences - File Paths) in most older Blender versions that I had not set in some newer versions. Blender does not seem to use the system clipboard but its Temporary Files location for storing copied content, so there were two separate clipboards, one using the default location and one using my custom location. BTW: saving Auto Saves to /tmp by default which is automatically deleted upon boot isn't a good preset - if the computer crashes, the Auto Save is lost, too, so I had to change the directory.

Germano Cavalcante changed title from ~~Can't paste to 2.92.0 from earlier versions~~ to Can't paste objects between different Blender instances if a custom path for 'Temporary Files' is set

2021-02-01 14:43:37 +01:00

Richard Antalik was unassigned by Germano Cavalcante

2021-02-01 14:43:37 +01:00

Germano Cavalcante commented

2021-02-01 14:43:37 +01:00

Changed status from 'Archived' to: 'Confirmed'

Germano Cavalcante reopened this issue

2021-02-01 14:43:37 +01:00

Germano Cavalcante commented

2021-02-01 14:45:41 +01:00

Thanks for the update.
Perhaps it would be better to create another report with the new information.
But I edited the description and confirmed.

Thanks for the update. Perhaps it would be better to create another report with the new information. But I edited the description and confirmed.

Bastien Montagne commented

2021-02-01 15:39:44 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2021-02-01 15:39:44 +01:00

@mano-wii this is not proper title/description, issue happens when the two Blender instances use two different temp paths. And imho this is not a bug, but rather a know limitation of current system.

@mano-wii this is not proper title/description, issue happens when the two Blender instances use **two different** temp paths. And imho this is not a bug, but rather a know limitation of current system.

Bastien Montagne changed title from ~~Can't paste objects between different Blender instances if a custom path for 'Temporary Files' is set~~ to Impossible to copy/paste data between different Blender instances that are using different temp directories

2021-02-01 15:42:58 +01:00

Bastien Montagne commented

2021-10-07 16:17:25 +02:00

Added subscribers: @ManBlender, @PratikPB2123, @chemicalcrux, @rjg

Bastien Montagne commented

2021-10-07 16:29:51 +02:00

Added subscribers: @ideasman42, @brecht

Bastien Montagne commented

2021-10-07 16:29:51 +02:00

@brecht @ideasman42 a fairly simple solution here is to use the system text clipboard to store a path to the temp .blend file, and read from there when pasting (defaulting to current temp directory if nothing matches, to support pasting from older versions of Blender)? That's how asset copy/paste is implemented currently btw.

But by default all instances of Blender should share the same temp directory (i.e. system's default one), so wonder if this is not actually rather a feature, allowing to create 'copy/paste groups'? Not sure if that would have any practical usage though...

@brecht @ideasman42 a fairly simple solution here is to use the system text clipboard to store a path to the temp .blend file, and read from there when pasting (defaulting to current temp directory if nothing matches, to support pasting from older versions of Blender)? That's how asset copy/paste is implemented currently btw. But by default all instances of Blender should share the same temp directory (i.e. system's default one), so wonder if this is not actually rather a feature, allowing to create 'copy/paste groups'? Not sure if that would have any practical usage though...

Brecht Van Lommel commented

2021-10-07 17:57:42 +02:00

Putting a path to the .blend file in the system clipboard seems reasonable to me.

I don't think the current behavior is a feature, copy/paste should have nothing to do with temp files on a user level, that's an implementation detail.

Putting a path to the .blend file in the system clipboard seems reasonable to me. I don't think the current behavior is a feature, copy/paste should have nothing to do with temp files on a user level, that's an implementation detail.

Philipp Oeser removed the

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Impossible to copy/paste data between different Blender instances that are using different temp directories #82243