Touchpad zoom and scroll gester using touchpad stopped working on Lenovo Thinkpad Laptop E520 #42420
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Reference: blender/blender#42420
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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.
Changed status to: 'Open'
Added subscriber: @MarkMcGahee
Added subscriber: @mont29
Well, I do not think any Blender dev has this specific hardware available to test so… First of all, please:
--factory-startup
commandline option).Otherwise, we won’t be really able to help, we can’t do much about a bug we cannot reproduce ourselves.
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:
Added subscriber: @Sergey
thanks for the feedback.
Sergey, you handled #40717, any hint here?
Not really, need someone who knows system events in OSX.
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.
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.
This issue was referenced by
e9645806f5
Changed status from 'Open' to: 'Resolved'
Closed by commit
e9645806f5
.