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Maniphest T42420

Touchpad zoom and scroll gester using touchpad stopped working on Lenovo Thinkpad Laptop E520
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Description

System Information
Lenovo thinkpad E520 (Edge laptop)
Windows 7 sp1
Graphics card: Intel HD Graphics 3000

Blender Version
Broken in: 2.72b 9e963ae. Tested 2.72 (initial release) & is also broken.
Worked: (optional)
Confirmed that it currently works in 2.71, 2.70a, 2.69 and 2.68a on the same laptop.

Short description of error
Scrolling panels (e.g. Properties Panel) with touchpad gesture (simulated Mouse wheel) does not work (no movement).
Zooming using the the same touchpad gesture does not work. It will intermittently zoom in a small amount then stop working

Note that I can still scroll by grabbing the scroll bars and I can zoom with Ctrl-middlebutton without problems.

Exact steps for others to reproduce the error
On Thinkpad E520 laptop make sure touchpad is set up with the mouse wheel gesture (for me it is a two-finger swipe down or up).
Run blender 2.72, or 2.72b .. Go to 3d View then attempt to zoom with "mouse wheel" gesture.

Go to Properties panel; adjust size to make scroll bar appear; Use "mouse wheel" gesture.

Revisions and Commits

rB Blender
rBe9645806f563 Fix T42420: Touchpad zoom and scroll gester using touchpad stopped working

Related Objects

Event Timeline

Mark McGahee (robognome) created this task.Oct 28 2014, 1:16 AM
Mark McGahee (robognome) raised the priority of this task from to 90.
Mark McGahee (robognome) updated the task description. (Show Details)
Mark McGahee (robognome) added a project: BF Blender.
Mark McGahee (robognome) edited a custom field.
Mark McGahee (robognome) added a subscriber: Mark McGahee (robognome).
Bastien Montagne (mont29) lowered the priority of this task from 90 to 30.Oct 31 2014, 9:40 AM
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).

Well, I do not think any Blender dev has this specific hardware available to test so… First of all, please:

  • Ensure both your OS and drivers are fully up-to-date;
  • Try to start Blender in factory settings (--factory-startup commandline option).
  • Try to tweak OGL settings in UserPreferences, System tab.
  • Try to place this dll next to your blender.exe (software OGL, will be slow, but will show whether this is a driver issue or not).

Otherwise, we won’t be really able to help, we can’t do much about a bug we cannot reproduce ourselves.

Mark McGahee (robognome) added a comment.Nov 4 2014, 3:20 AM

Thanks for the diagnostic help.

I updated the gfx and touchpad drivers when I first encountered this. None of the opengl draw, selection or other checkboxes made any difference. Factory settings start up did not change the behavior. Neither did running it with with opengl32.dll in the directory with blender.exe, Other than slowing the update rate of the screen as you predicted, it did not change mousewheel behavior.

New Info:

  • I unzipped and ran blender 2.72a with factory settings and it also shows the same problem.
  • When I perform the mousewheel gesture the system console spits out the following message from 3 to 10 times: "<!> event has invalid window" Did a lot of zooming and panning without the mousewheel, but this didn't produce the same error message. Checked 2.71 console (where the mousewheel works) and the mousewheel did not produce the message.
  • * attached console output using opengl32.dll and factory settings.
    blender_2.72_touchpad_bug_-_debug_consol.txt3 KBDownload
  • Looked at T40717 -- a workarouund for another laptop touchpad issue that was included starting with 2.72. It might be the trigger for the error message. It appears to be the only change to the mousewheel handling applied for 2.72, The change for that fix appears harmless otherwise, but I would like to see if removing the T40717 workaround corrects my problem.
Bastien Montagne (mont29) raised the priority of this task from 30 to Normal.Nov 12 2014, 7:19 PM
Bastien Montagne (mont29) added a subscriber: Sergey Sharybin (sergey).

thanks for the feedback.

Sergey, you handled T40717, any hint here?

Sergey Sharybin (sergey) added a comment.Nov 13 2014, 12:19 PM

Not really, need someone who knows system events in OSX.

Sergey Sharybin (sergey) added a comment.Nov 13 2014, 12:24 PM

Ah, mixed several reports in here sorry. Was looking into some OSX touchpad issues recently..

I don't think that workaround for that particular fix caused the issue, it just sends WM_USER event to a queue to force PeekMessage to trigger and cause window refresh. We don't handle this even, so apart from extra redraw that call does nothing.

More likely the change which was sending a wheel event to a window under the mouse caused this. But it's hard to say for sure unless some of the developers are able to reproduce the issue.

Mark McGahee (robognome) added a comment.Nov 20 2014, 6:24 PM

It might be worth considering to try to reproduce this on a laptop that uses a Synaptics driver for the touchpad, whether it is a Lenovo or not.

I have encountered mouse wheel issues on a couple of other programs. Notepad++ 6.5.1 corrected a problem with Synaptics touchpad drivers (scrolling). Since it is open source that code may give some insight in this issue, provided that it is feasible to do so.

Sergey Sharybin (sergey) changed the task status from Unknown Status to Resolved.Nov 26 2014, 12:47 PM
Sergey Sharybin (sergey) added a commit: rBe9645806f563: Fix T42420: Touchpad zoom and scroll gester using touchpad stopped working.

Closed by commit rBe9645806f563.