Trackpad stops working for a while #112173

New Issue

Nathaniel · 2023-09-09T06:41:29+02:00

Nathaniel commented

2023-09-09 06:41:29 +02:00

System Information
Operating system: MacOS 12.6.5
Graphics card: AMD Radeon Pro 5500M

Blender Version
Broken: 3.6.2
Worked: don't know

Short description of error

Sometimes, Blender stops responding to trackpad gestures such as two-finger scroll or pinch zoom. This is not just in the viewport but everywhere - I can't scroll menus or the node view, for example.

The UI is otherwise responsive when this happens - I can scroll menus by dragging the slider at the edge, just not with a two-finger scroll.

If I go and do something else in another app for a few minutes, it usually fixes itself.

This happens sporadically and I don't have a reliable way to reproduce it, but it seems to happen often after I render an image - after the image has rendered, I try to use pinch-zoom to look more closely and find I can't. I am not sure if it happens in other situations as well - if it does I will update this report.

Exact steps for others to reproduce the error

I'm afraid that I can't reproduce this reliably - it just happens every now and then, in any .blend file. I am happy to take any advice on how to look for a way to reproduce it.

**System Information** Operating system: MacOS 12.6.5 Graphics card: AMD Radeon Pro 5500M **Blender Version** Broken: 3.6.2 Worked: don't know **Short description of error** Sometimes, Blender stops responding to trackpad gestures such as two-finger scroll or pinch zoom. This is not just in the viewport but everywhere - I can't scroll menus or the node view, for example. The UI is otherwise responsive when this happens - I can scroll menus by dragging the slider at the edge, just not with a two-finger scroll. If I go and do something else in another app for a few minutes, it usually fixes itself. This happens sporadically and I don't have a reliable way to reproduce it, but it seems to happen often after I render an image - after the image has rendered, I try to use pinch-zoom to look more closely and find I can't. I am not sure if it happens in other situations as well - if it does I will update this report. **Exact steps for others to reproduce the error** I'm afraid that I can't reproduce this reliably - it just happens every now and then, in any .blend file. I am happy to take any advice on how to look for a way to reproduce it.

Nathaniel added the

labels 2023-09-09 06:41:29 +02:00

YimingWu commented

2023-09-09 16:24:30 +02:00

This sounds like some behaviour where on my linux machine the touchscreen could occasionally stay pressed (not lifted) at 1 point, then touch gestures are going haywire, even interfering with regular operations. Not sure if the same thing happens with touchpads (in my experiences they are often more robust), but "unlifted finger" could be a cause.

Could you try this: Hold one finger down on the track pad and do something else with another mouse, then use two more fingers to do gestures while you still holding the other finger. See if the response of the program is similar to what you have experienced.

It's likely that the OS released the "phantom touch" after a time out so normal operations can resume. If this is indeed the case, we probably can't do much on blender side, other than maybe detect those touches and discard them early in the event system.

This sounds like some behaviour where on my linux machine the touchscreen could occasionally stay pressed (not lifted) at 1 point, then touch gestures are going haywire, even interfering with regular operations. Not sure if the same thing happens with touchpads (in my experiences they are often more robust), but "unlifted finger" could be a cause. Could you try this: Hold one finger down on the track pad and do something else with another mouse, then use two more fingers to do gestures while you still holding the other finger. See if the response of the program is similar to what you have experienced. It's likely that the OS released the "phantom touch" after a time out so normal operations can resume. If this is indeed the case, we probably can't do much on blender side, other than maybe detect those touches and discard them early in the event system.

YimingWu added

Status

Needs Information from User

and removed

labels 2023-09-09 16:24:49 +02:00

Nathaniel commented

2023-09-09 16:31:33 +02:00

This has only ever happened in Blender, so it seems kind of unlikely that it's purely an OS level issue. I should mention that other apps respond to touch gestures correctly while Blender is in this state.

Nathaniel commented

2023-09-09 16:34:14 +02:00

I don't have another mouse, but I tried holding down one finger, then pressing a key on the keyboard, then using two finger gestures while still holding the other finger. Both Blender and Google Chrome behaved as expected.

YimingWu commented

2023-09-09 16:36:42 +02:00

@Nathaniel-6 it is possible that other program have mechanisms to get rid of erroneous touch state too.

@mano-wii @jenkm are you guys familiar with this phenomenon?

@Nathaniel-6 it is possible that other program have mechanisms to get rid of erroneous touch state too. @mano-wii @jenkm are you guys familiar with this phenomenon?

Nathaniel commented

2023-09-11 10:24:04 +02:00

This just happened again and I noticed something really weird: in the screenshot below, while Blender was in this weird state, I tried to scroll around the node view by dragging the scrollbar on its right-hand side (not using two finger scrolling). But instead of moving the node view, it only moved the "map range" node.

I could move the map range node sideways as well as vertically, even though the scroll bar usually only moves the nodes vertically. As soon as it started moving, the 'map range' node became disconnected from the wire it was attached to.

(I tried to capture a video, but it started working again before I could work out how.)

This just happened again and I noticed something really weird: in the screenshot below, while Blender was in this weird state, I tried to scroll around the node view by dragging the scrollbar on its right-hand side (not using two finger scrolling). But instead of moving the node view, it only moved the "map range" node. I could move the map range node sideways as well as vertically, even though the scroll bar usually only moves the nodes vertically. As soon as it started moving, the 'map range' node became disconnected from the wire it was attached to. (I tried to capture a video, but it started working again before I could work out how.) ![image](/attachments/80c0dce6-2ef4-4916-bfde-06c404995086)

image.png

1.8 MiB

👀 1

Pratik Borhade commented

2023-09-22 07:34:04 +02:00

I tried to scroll around the node view by dragging the scrollbar on its right-hand side (not using two finger scrolling). But instead of moving the node view, it only moved the "map range" node.

Hi, this seems a different problem because the Original post is about touchpad scrolling

Re: touchpad scrolling:

Did you check whether the window was active while navigating with touchpad?
Maybe factory reset would resolve the issue: File > Defaults > Load Factory Settings
Launch blender from command line with --debug-events argument, check if that captures touchpad event when scrolling is not functional.

> I tried to scroll around the node view by dragging the scrollbar on its right-hand side (not using two finger scrolling). But instead of moving the node view, it only moved the "map range" node. Hi, this seems a different problem because the Original post is about `touchpad scrolling` Re: touchpad scrolling: - Did you check whether the window was active while navigating with touchpad? - Maybe factory reset would resolve the issue: `File > Defaults > Load Factory Settings` - Launch blender from command line with `--debug-events` argument, check if that captures touchpad event when scrolling is not functional.

Nathaniel commented

2023-09-22 08:05:52 +02:00

@PratikPB2123 I'm fairly certain that it's another symptom of the same problem. The weird behaviour I described in my second post occurred when Blender was in the state I described in my first post (i.e. not responding to trackpad scrolling) and it stopped at the same time the first issue stopped.

Pratik Borhade commented

2023-10-23 08:37:36 +02:00

Re: touchpad scrolling:

Did you check whether the window was active while navigating with touchpad?

Maybe factory reset would resolve the issue: File > Defaults > Load Factory Settings

Launch blender from command line with --debug-events argument, check if that captures touchpad event when scrolling is not functional.

Sorry for getting back late. This is still unanswered ^

> Re: touchpad scrolling: > - Did you check whether the window was active while navigating with touchpad? > - Maybe factory reset would resolve the issue: `File > Defaults > Load Factory Settings` > - Launch blender from command line with `--debug-events` argument, check if that captures touchpad event when scrolling is not functional. Sorry for getting back late. This is still unanswered ^

Yevgeny Makarov commented

2023-11-17 11:49:56 +01:00

I think it's a bug in macOS, I've seen it a couple of times in other programs (with Blender not even running).

Also, since there are no specific steps to reproduce, there is nothing we can do about it.

I think it's a bug in macOS, I've seen it a couple of times in other programs (with Blender not even running). Also, since there are no specific steps to reproduce, there is nothing we can do about it.

Pratik Borhade referenced this issue

2023-12-04 06:11:26 +01:00

Trackpad zoom unreliable #115651

Pratik Borhade commented

2023-12-29 07:27:43 +01:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again 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 again for the report. If the problem persists please open a new report with the required information.

Pratik Borhade closed this issue

2023-12-29 07:27:47 +01:00

Blender Bot added

Status

Archived

and removed

Status

Needs Information from User

labels 2023-12-29 07:27:49 +01:00

Sign in to join this conversation.