[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Michael Doube]

Thanks for your help with this, looks like it's fixed for Xenial on
stock kernel v4.4 so I will not proceed with an SRU at this stage

:~$ uname -a
Linux Bethany 4.4.0-59-generic #80-Ubuntu SMP Fri Jan 6 17:47:47 UTC 2017 
x86_64 x86_64 x86_64 GNU/Linux

:~$ cat /proc/bus/input/devices
I: Bus=0011 Vendor=0002 Product=0008 Version=0800
N: Name="AlpsPS/2 ALPS DualPoint TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input6
U: Uniq=
H: Handlers=mouse1 event7 
B: PROP=1
B: EV=b
B: KEY=e520 7 0 0 0 0
B: ABS=2608103

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Christopher M. Penalver]

Michael Doube, thank you for taking the time to report this bug and
helping to make Ubuntu better. However, I am closing it because the bug
has been fixed in the latest development version of Ubuntu.

This is a significant bug in Ubuntu. If you need a fix for the bug in
previous versions of Ubuntu, please perform as much as possible of the
SRU Procedure [1] to bring the need to a developer's attention.

[1]: https://wiki.ubuntu.com/StableReleaseUpdates#Procedure

** Tags removed: needs-reverse-bisect
** Tags added: reverse-bisect-done

** Tags added: cherry-pick

** Changed in: linux (Ubuntu)
   Importance: Low => Medium

** Changed in: linux (Ubuntu)
   Status: Confirmed => Fix Released

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Michael Doube]

Bisected kernel, see below (where 'bad' means feature introduced and
functional)

aeaa881f9b17823028b464893b89c42db797b717 is the first bad commit
commit aeaa881f9b17823028b464893b89c42db797b717
Author: Ben Gamari 
Date:   Tue Oct 4 11:43:30 2016 -0700

Input: ALPS - set DualPoint flag for 74 03 28 devices

Here we introduce logic in alps_identify to set the ALPS_DUALPOINT flag
for touchpad hardware responding to E7 report with 73 03 28, as is found
in the Dell Latitude E7470.

Tested-by: Michal Hocko 
Signed-off-by: Ben Gamari 
Signed-off-by: Dmitry Torokhov 

:04 04 9e51f288b78352b4b7fca18f5e5f379cd1d4b90a
3b7eafa43208c2a7046be9d17f748fcd5dba18d8 M  drivers


** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Christopher M. Penalver]

Michael Doube, the next step is to fully reverse commit bisect from
kernel 4.4 to 4.9 in order to identify the last bad commit, followed
immediately by the first good one. Once this good commit has been
identified, it may be reviewed for backporting. Could you please do this
following https://wiki.ubuntu.com/Kernel/KernelBisection ?

Please note, finding adjacent kernel versions, or providing a commit
from a kernel version bisect is not fully commit bisecting.

Also, the kernel release names are irrelevant for the purposes of
bisecting.

It is most helpful that after the fix commit (not kernel version) has
been identified, you then mark this report Status Confirmed.

Thank you for your help.

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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Re: [Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Michael Doube]

Michael Doube, would you need a backport to a release prior to Zesty?
Yes, to 16.04 LTS

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Christopher M. Penalver]

Michael Doube, would you need a backport to a release prior to Zesty?

If not, please feel free to mark this Status Invalid by clicking on the
current status in the yellow line and then choosing Invalid in the
revealed drop down box.

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Michael Doube]

Tested against today's Zesty CD Image and confirming that touchpad
detection is working there.

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Christopher M. Penalver]

Michael Doube, as Zesty was rebased against 4.9, could you please test
it via http://cdimage.ubuntu.com/daily-live/current/ and advise to the
results?

** Tags removed: kernel-fixed-upstream-4.9.0-040900-generic
** Tags added: kernel-fixed-upstream-4.9

** Changed in: linux (Ubuntu)
   Status: Confirmed => Incomplete

** Tags added: needs-reverse-bisect

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Michael Doube]

This is fixed upstream in mainline kernel 4.9.0-040900-generic

:~$ cat /proc/bus/input/devices

I: Bus=0011 Vendor=0002 Product=0008 Version=0800
N: Name="AlpsPS/2 ALPS DualPoint TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input6
U: Uniq=
H: Handlers=mouse1 event7 
B: PROP=1
B: EV=b
B: KEY=e520 7 0 0 0 0
B: ABS=2608103


** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

** Tags added: kernel-fixed-upstream kernel-fixed-
upstream-4.9.0-040900-generic

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Christopher M. Penalver]

Michael Doube, thank you for reporting this and helping make Ubuntu
better.

In order to allow additional upstream developers to examine the issue, at your 
earliest convenience, could you please test the latest upstream kernel 
available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please 
keep in mind the following:
1) The one to test is at the very top line at the top of the page (not the 
daily folder).
2) The release names are irrelevant.
3) The folder time stamps aren't indicative of when the kernel actually was 
released upstream.
4) Install instructions are available at 
https://wiki.ubuntu.com/Kernel/MainlineBuilds .

If testing on your main install would be inconvenient, one may:
1) Install Ubuntu to a different partition and then test this there.
2) Backup, or clone the primary install.

If the latest kernel did not allow you to test to the issue (ex. you couldn't 
boot into the OS) please make a comment in your report about this, and continue 
to test the next most recent kernel version until you can test to the issue. 
Once you've tested the upstream kernel, please comment on which kernel version 
specifically you tested. If this issue is fixed in the mainline kernel, please 
add the following tags by clicking on the yellow circle with a black pencil 
icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where X, and Y are the first two numbers of the kernel version, and Z is
the release candidate number if it exists.

If the mainline kernel does not fix the issue, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Please note, an error to install the kernel does not fit the criteria of
kernel-bug-exists-upstream.

Also, you don't need to apport-collect further unless specifically
requested to do so.

It is most helpful that after testing of the latest upstream kernel is
complete, you mark this report Status Confirmed.

Lastly, to keep this issue relevant to upstream, please continue to test
the latest mainline kernel as it becomes available.

Thank you for your help.

** Tags added: bios-outdated-1.9.3

** No longer affects: xserver-xorg-input-synaptics (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

** Changed in: linux (Ubuntu)
   Status: Confirmed => Incomplete

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Michael Doube]

Added linux package because device is not correctly detected and
debugging instructions say

" If Touchpad is not detected then the following will appear:

Name="ImPS/2 Generic Wheel Mouse"

In this case the bug must be a kernel issue."

https://wiki.ubuntu.com/DebuggingTouchpadDetection

:~$ cat /proc/bus/input/devices

I: Bus=0011 Vendor=0002 Product=0005 Version=
N: Name="ImPS/2 Generic Wheel Mouse"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input7
U: Uniq=
H: Handlers=mouse1 event8 
B: PROP=1
B: EV=7
B: KEY=7 0 0 0 0
B: REL=103


** Also affects: linux (Ubuntu)
   Importance: Undecided
   Status: New

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  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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[Bug 1641451] Re: ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

[Michael Doube]

** Summary changed:

- 'ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370
+ ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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Title:
  ALPS Touchpad incorrectly detected as PS/2 mouse in Dell Latitude 7370

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