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[Bug 1220426] Re: [nvidia-prime]Freeze while using touchpad

 

Okay, I got a lot further this time.   Instead of

sudo apt-get build-dep xorg-server

I used

sudo apt-get build-dep xorg-server-lts-utopic

That installed a bunch of additional packages.   When I executed the
"sudo fakeroot debian/rules binary" command it ran for a few minutes,
spit out thousands of lines of output, and appeared to compile dozens or
hundreds of modules.   However it got to a point where it failed with
the following messages:

dh_shlibdeps
sed -i 's/libgl1-mesa-glx /libgl1-mesa-glx-lts-utopic /' -i debian/xserver-xorg-core-lts-utopic.substvars
sed: can't read debian/xserver-xorg-core-lts-utopic.substvars: No such file or directory
make[1]: *** [binary-deb] Error 2

Any suggestions of how to get past this?

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https://bugs.launchpad.net/bugs/1220426

Title:
  [nvidia-prime]Freeze while using touchpad

Status in X.Org X server:
  Fix Released
Status in xorg-server package in Ubuntu:
  Triaged

Bug description:
  Using Asus N43SL laptop as an example, with nvidia-prime installed, so
  the dedicated NVIDIA graphics card (GT 540m) is in use, once in a
  while, my screen will freeze when I use my touchpad.

  WORKAROUND: Use USB mouse.

  WORKAROUND: Uninstall nvidia-prime and use integrated graphics.

  WORKAROUND: Do a VT switch via Ctrl+Alt+F1 then Ctrl+Alt+F7.

  In the attached Xorg.0.log, you can see "synaptics: ETPS/2 Elantech Touchpad: touchpad found" each time I did a VT switch and regained control:
  https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1220426/+attachment/3801516/+files/Xorg.0.log

  The following upstream report has a patch that addresses this issue:
  https://bugs.freedesktop.org/show_bug.cgi?id=86288

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