I need a little assistance - anyone. I've managed to get started (I
think) and test the first bisect and tried to mark as 'GOOD', but got
the following:

git bisect good
Bisecting: 147 revisions left to test after this (roughly 7 steps)
error: Your local changes to the following files would be overwritten by 
Please, commit your changes or stash them before you can switch branches.

What is the correct action, there's nothing in the guide about this?

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  Network scanner not detected by xsane after upgrade to 16.04

Status in linux package in Ubuntu:

Bug description:
  Hopefully I'm reporting this in the correct area/group. Sorry if not.
  After upgrading to 16.04, my scanner is no longer detected by xsane (and 
other scan apps.) The model is 'Epson WF-3520' multi-function and is connected 
wirelessly to the network.
  The problem occurs on all my computers: A Dell 64 bit desktop, An Asus 64 bit 
laptop, A Medion 32 bit laptop.
  I've upgraded to the latest software released by the manufacturer on 2 
computers, but it makes no difference.
  Printing works OK and also the scanner is detected if I connect using a USB 
cable (a second printer is installed though).
  The problem only occurs using the 'linux-image-4.4.0...' series of kernels. 
If I boot with any of the previous kernels available, 'linux-image-4.2.0...' or 
'linux-image-3.19.0...' everything works OK.
  I am able to ping the scanner.
  I've tried a number of suggested fixes from searching around various forums, 
although many of these relate to 'back-end' scanners connected to a host for 
network access which is not applicable as mine is connected directly to the 
network. In any case none have worked.
  I have tried the following:
  . Removing all manufacturer software and /usr/sane.d/epkowa.conf
  . Comment out all entries in the /usr/sane.d/dll (Back-end related)
  . Comment out all entries in the /usr/sane.d/dll.conf.conf except 'net' and 
adding 'epkowa' (Back-end related)
  . Disable the firewall (ufw)
  . Specifically adding a port to use (1865) (ie. net 192.1... 1865
  . Linking the libraries in /usr/lib/sane to /usr/lib/x86_64-linux-gnu/sane

  Other than that I'm at a loss and sticking with older kernels.


  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-34-generic 4.4.0-34.53
  ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
  Uname: Linux 4.4.0-34-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
   /dev/snd/controlC0:  tony       4520 F.... pulseaudio
   /dev/snd/controlC1:  tony       4520 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Aug 14 16:37:16 2016
  HibernationDevice: RESUME=UUID=762f657a-d174-4173-b09d-52d580c09a91
  InstallationDate: Installed on 2013-10-01 (1047 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: ASUSTeK Computer Inc. N71Jq
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic 
root=UUID=dea23950-d6b3-498c-abba-a94513b58579 ro quiet splash vt.handoff=7
   linux-restricted-modules-4.4.0-34-generic N/A
   linux-backports-modules-4.4.0-34-generic  N/A
   linux-firmware                            1.157.3
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-07-30 (14 days ago)
  dmi.bios.date: 12/24/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N71Jq.204
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N71Jq
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.product.name: N71Jq
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.

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