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[Oleg Cherkasov <1277245@xxxxxxxxxxxxxxxxxx>]

Hi, I am still having that issue on 14.04 Lenovo T540p with nvidia-prime
activated.

I had suspected it is 'Disable while typing' option in Mouse&Touchpad
configuration however disabling the option does not solve the problem.
At the same time 14.04 on Dell V131 does not have any issues with
touchpad at all.  Switching to any virtual console and back C-A-F7 is a
workaround as mentioned above however does not solve actual problem.  I
wonder it is still 'Disable while typing' issue because I had similar
issue in a past.

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https://bugs.launchpad.net/bugs/1277245

Title:
  nvidia prime causing mouse and screen to freeze

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  I upgraded to Ubuntu Trusty Tahr . Currently running with updates as of 6th Feb. 64bit. 
  After installing nvidia-prime and nvidia-331, i can see frequent mouse freezes. Once the mouse is frozen, it doesn't allow Alt+Tab functionality. Only way to get out of this is by pressing Ctrl+Alt+F1 . I can bring back by unloading and loading the psmouse module

  modprobe -r psmouse.

  lspci | grep VGA
  00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18)
  01:00.0 VGA compatible controller: NVIDIA Corporation GT218M [GeForce 310M] (rev a2)

  
  uname -a
  Linux Vostro-3300 3.13.0-6-generic #23-Ubuntu SMP Thu Jan 30 09:48:03 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
  cat /etc/lsb-release 
  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=14.04
  DISTRIB_CODENAME=trusty
  DISTRIB_DESCRIPTION="Ubuntu Trusty Tahr (development branch)"

  This issue does not occur while running the opensource driver.

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