1198741 - mouse wheel ignored on return to Nightly window

Status: RESOLVED DUPLICATE of bug 1182700

(Core :: Widget: Gtk, defect)

Description

[u123541]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:43.0) Gecko/20100101 Firefox/43.0
Build ID: 20150813030208

Steps to reproduce:

Running KDE4 with "Focus Follows Mouse - Mouse Precedence" -- though selecting any other "Focus Follows Mouse" variant does not affect bug.
Nightly maximized (bug not present if not maximized).
Raise any other app window; scrolling works on other app.
Move mouse to Nightly and keystrokes delivered to Nightly as expected.
However, wheel scrolling is ignored.


Actual results:

I can raise several apps above Nightly and move mouse plus scroll and all apps respond correctly; but when I move mouse over Nightly, I have to click on Nightly window (which raises it over other apps) before it responds to wheel events.  This also affects google maps wheel zooming.

Switching desktops is where I first noticed this and initially assumed it could be a KDE bug; until performing the above tests showed that only Nightly was ignoring wheel on mouse over. IOW, every time I switched back to desktop running Nightly, mouse wheel would not work until I clicked, or forced scrolling.


Expected results:

Handle wheel scroll on mouse re-entry.

Also, on occasion (haven't found the trigger), I have to click & drag scroll bar before wheel scroll will work again.

Comment 1

[u123541]

Attachment: bug1198741.jpg

More proof this is a Nightly bug...
When I switch back to Nightly-containing desktop, hovering mouse over:
- Nightly window -- wheel ignored
- Nightly tabs -- wheel ignored
- Nightly title bar -- wheel correctly scrolls between Nightly windows[1]

[1] I use KDE's window grouping feature as seen in this screen shot.

Comment 2

[u123541]

On occasion, wheel scrolling cannot be resumed; except by switching to another tab and back...

Comment 3

[u123541]

After more testing, this is becoming difficult to identify the exact trigger(s)...

Turns out that "maximized only" is incorrect.  While I can mouse over between windows and that works; if I switch desktops and come back to the desktop containing the non-maximized Nightly, scrolling doesn't work.

Re comment 2, this only sometimes works to restore wheel scrolling; switching to another Nightly window and back seems to restore wheel scrolling (for now?)...

I've tested mouse over scrolling with many other apps (xpdf, konsole, gimp, emacs, okular, bibletime,...) and only Nightly fails.

Comment 4

[Mike Hoye [:mhoye]]

Can you tell us specifically what kind of mouse you're using?

Comment 5

[u123541]

(In reply to Mike Hoye [:mhoye] from comment #4)
> Can you tell us specifically what kind of mouse you're using?

That's a surprise question... :)  At the moment, I have both a GE wired mouse and a generic wireless mouse hooked up.  

$ lsusb -v

Bus 002 Device 012: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x093a Pixart Imaging, Inc.
  idProduct          0x2510 Optical Mouse
  bcdDevice            1.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           34
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      2 Mouse
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      62
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              10

Bus 002 Device 002: ID 276d:1105  
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x276d 
  idProduct          0x1105 
  bcdDevice            0.01
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           34
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      2 Mouse
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      52
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval               8

Comment 6

[u123541]

Due to problems accessing a website with an old TLS, I fired up FirefoxESR 38.2.0 (Mageia Linux 5) and I'm not seeing this mouse issue.

Comment 7

[u123541]

Back on Nightly and mouse problem is back...