Like Aaron wrote, I got the same problem on my Dell Latitude E6420 laptop. It seems that this patch does not fix my problem, although the symptoms are the same.
lsusb:
Bus 001 Device 005: ID 0eef:7356 D-WAV Scientific Co., Ltd
xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ eGalax Inc. USB TouchController id=11 [slave pointer (2)]
⎜ ↳ eGalax Inc. USB TouchController id=12 [slave pointer (2)]
⎜ ↳ eGalax Inc. USB TouchController id=13 [slave pointer (2)]
⎜ ↳ ImPS/2 ALPS GlidePoint id=15 [slave pointer (2)]
⎜ ↳ Dell Dell USB Optical Mouse id=18 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ Laptop_Integrated_Webcam_FHD id=10 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
↳ Dell WMI hotkeys id=16 [slave keyboard (3)]
↳ LITEON Technology USB Multimedia Keyboard id=17 [slave keyboard (3)]
Like Aaron wrote, I got the same problem on my Dell Latitude E6420 laptop. It seems that this patch does not fix my problem, although the symptoms are the same.
lsusb:
Bus 001 Device 005: ID 0eef:7356 D-WAV Scientific Co., Ltd
xinput list Integrated_ Webcam_ FHD id=10 [slave keyboard (3)]
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ eGalax Inc. USB TouchController id=11 [slave pointer (2)]
⎜ ↳ eGalax Inc. USB TouchController id=12 [slave pointer (2)]
⎜ ↳ eGalax Inc. USB TouchController id=13 [slave pointer (2)]
⎜ ↳ ImPS/2 ALPS GlidePoint id=15 [slave pointer (2)]
⎜ ↳ Dell Dell USB Optical Mouse id=18 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ Laptop_
↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
↳ Dell WMI hotkeys id=16 [slave keyboard (3)]
↳ LITEON Technology USB Multimedia Keyboard id=17 [slave keyboard (3)]