[Kernel-packages] [Bug 1629613] Re: [Dell XPS 13] SynPS/2 Synaptics TouchPad not recognized after upgrade from 14.04 to 16.04

2017-01-09 Thread Julius Seporaitis 
With a little spare time I've been checking what happens in logs while I
run `evtest` as per above instruction: `/var/log/dmesg` and
`/var/log/Xorg.0.log` - as grepping showed they both reference "SynPS/2
Synaptics TouchPad".

dmesg log was not updating after boot, but I noticed something in
Xorg.0.log, which I attach below. Here's the breakdown of the final few
lines, that happened while I was checking `less /proc/bus/input/devices`
and `evtest`. So here it is:

First of ALT+CTRL+F2, as I switch to virtual terminal, I get this:

[47.820] (II) AIGLX: Suspending AIGLX clients for VT switch

I assume nothing unusual and proceed to run `less
/proc/bus/input/devices` - observe the device `event5` in the list, that
is the TouchPad (as per above comment).

I run `sudo evtest /dev/input/event5` and start swiping and clicking the
touchpad - nothing yet happens. After a little bit - curiosity kills and
ALT+CTRL+F7 - I go check the terminal app that's tailing log files. I
notice this:

[86.672] (II) AIGLX: Resuming AIGLX clients after VT switch
[86.672] (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 0, 
position (0, 0), rotation normal, reflection none
[86.744] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[92.560] (II) AIGLX: Suspending AIGLX clients for VT switch

Switch back to virtual terminal where `evtest` is still running - I
continue swiping and clicking touchpad. No events come through. One more
come back to X:

[   106.959] (II) AIGLX: Resuming AIGLX clients after VT switch
[   106.959] (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 0, 
position (0, 0), rotation normal, reflection none
[   107.028] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[   113.552] (II) AIGLX: Suspending AIGLX clients for VT switch

And back - still no events. I continue the procedure of clicking,
touching and swiping. Eventually - the events start coming in. I CTRL+C
`evtest`, log out from VT and come back to X:

[   174.700] (II) AIGLX: Resuming AIGLX clients after VT switch
[   174.700] (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 0, 
position (0, 0), rotation normal, reflection none
[   174.760] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found

The touchpad sure works and I can move the pointer.

Any advice/ideas where to look next - welcome & could look at it next
time I have spare time.

** Attachment added: "Xorg.0.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1629613/+attachment/4802134/+files/Xorg.0.log

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Title:
  [Dell XPS 13] SynPS/2 Synaptics TouchPad not recognized after upgrade
  from 14.04 to 16.04

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  * Touchpad doesn't work at all (No response from the Touchpad)
  * Tried using external mouse and it works fine
  * Cannot find "SynPS/2 Synaptics TouchPad" in "cat /proc/bus/input/devices"

  
  OS:   Ubuntu 16.04.1 LTS
  kernel version: 4.4.0-38-generic
  Laptop Model:   Dell XPS 13 - 9

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[Kernel-packages] [Bug 1629613] Re: [Dell XPS 13] SynPS/2 Synaptics TouchPad not recognized after upgrade from 14.04 to 16.04

2016-12-18 Thread Julius Seporaitis 
Updating BIOS managed to improve the situation to the point where I can
consistently make the touchpad work, although it is inconvenient.

Laptop: Dell XPS 13 Developer Edition (9333)
OS: 16.04 LTS - updated from 14.04 LTS - updated from 12.04 LTS, which was the 
original OS and had touchpad working.

Here's how I "made" it work.

1. Updated BIOS from A02 to A08 (latest for my model) - as per Dell's 
instructions[0].
2. After reboot, `xinput` output finally had "SynPS/2 Synaptics TouchPad", BUT 
it was still not responsive.
3. `sudo apt-get install evtest` (required for step #4).
4. Following the "Debugging Touchpad Detection"[1] I switch to VT (CTRL+ALT+F2)
5. Run `cat /proc/bus/input/devices` I find the touchpad name is `event5`.
6. Run `sudo evtest /dev/input/event5 > event` and do various gestures on the 
touchpad, then CTRL+C.
7. Switch back to X (CTLR+ALT+F7) - turns out the touchpad is now working.

After rebooting touchpad is non-responsive, but if I repeat steps 6 & 7
- it starts working again. I'm not sure if this is reproducible on other
models, but I hope this is helpful for further debugging.


[0]: http://www.dell.com/support/Article/us/en/04/SLN284433/en
[1]: 
https://wiki.ubuntu.com/DebuggingTouchpadDetection#In_case_your_Touchpad_doesn.27t_work_at_all_.28No_response_from_the_Touchpad.29

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1629613

Title:
  [Dell XPS 13] SynPS/2 Synaptics TouchPad not recognized after upgrade
  from 14.04 to 16.04

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  * Touchpad doesn't work at all (No response from the Touchpad)
  * Tried using external mouse and it works fine
  * Cannot find "SynPS/2 Synaptics TouchPad" in "cat /proc/bus/input/devices"

  
  OS:   Ubuntu 16.04.1 LTS
  kernel version: 4.4.0-38-generic
  Laptop Model:   Dell XPS 13 - 9

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1629613/+subscriptions

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