Benjamin,

Sorry for the delay!

$ uname -r
4.3.0-040300rc5-generic

Attached dmesg with i2c-hid.debug=1

Regards,

Josep


2015-10-06 10:59 GMT+02:00 Benjamin Tissoires [off-list ref]:

Hi Josep,

On Tue, Oct 6, 2015 at 10:02 AM, Josep Pujadas-Jubany
[off-list ref] wrote:

quoted

Benjamin,

I'm sorry. I just wanted to summarize the problem I reported at
bugs.launchpad.net

No worries. I know exactly why everyone coming from ubuntu always
sends such a mail, and this is what annoys me ;)

quoted

I followed the instructions that Ubuntu Team said to me,
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1493814/comments/33

The rest is only my ignorance about Linux Kernel. I'm sorry twice!

no worries twice :)

quoted

I will try to explain a new time the problem. I have no idea if it's
caused by the input module or not. Perhaps it is a problem of the i2c
module.

The Synaptic Touchpad is detected as SYN1B7D:01 06CB:2991 UNKNOWN with
default BIOS settings (i2c mode activated).

I tried this with the last version of the BIOS and latest kernel 64
bit available.

When this occurs the Touchpad works just like a simple mouse.

OK, so the good thing is that your i2c module is working properly
otherwise we would not see your touchpad at all under HID.

The fact that the touchpad stays in mouse emulation mode means that
there is something fishy with the touchpad which prevents us to switch
it to the multitouch mode. (adding Andrew in CC, he should be able to
help us).

Can you upload a dmesg with "i2c-hid.debug=1" appended to the command
line? (in grub, type this without quotes at the end of the line
containing the kernel boot parameters).

Also, could you send us the output of hid-recorder [1]? (download the
source, compile it and run "src/hid-recorder /dev/hidraw*"). This
should help us understanding what is going on.

Cheers,
Benjamin

[1] http://bentiss.github.io/hid-replay-docs/

quoted

Thanks!

Josep


2015-10-05 11:09 GMT+02:00 Benjamin Tissoires [off-list ref]:

quoted

Hi Josep,

[please do not take my rant personally, I know it can be difficult to
report a problem upstream]

On Sun, Oct 4, 2015 at 7:26 PM, Josep Pujadas-Jubany [off-list ref] wrote:

quoted

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1493814

Touchpad has issues working
===========================

The mainline kernel does not fix the issue

Latest BIOS (1.38)

Oh boy. We are not robots. Please add some valuable information like
what is the issue, and what you are seeing. We are humans and a little
bit of phrasing does not hurt (I know the ubuntu howto tells you to
consider us as robot, and I really am offended each time we receive
such a bug report).

quoted

BIOS Touchpad option ---> Advanced
==================================

$ xinput
⎜ ↳ SYN1B7D:01 06CB:2991 UNKNOWN id=11 [slave pointer (2)]

$ dmesg | grep -E "(mouse|input)"
[ 14.668719] input: SYN1B7D:01 06CB:2991 UNKNOWN as
/devices/platform/80860F41:00/i2c-0/i2c-SYN1B7D:01/0018:06CB:2991.0001/input/input7
[ 14.669434] hid-multitouch 0018:06CB:2991.0001: input,hidraw0:
<UNKNOWN> HID v1.00 Mouse [SYN1B7D:01 06CB:2991] on

This looks good to me from the input point of view. Please describe
which issues you are seeing, because here, all we can say is that it
is normal and there is nothing to be done.

quoted

BIOS Touchpad option ---> Basic
===============================

$ xinput
⎜ ↳ SynPS/2 Synaptics TouchPad id=12 [slave pointer (2)]

$ dmesg | grep -E "(mouse|input)"
[ 2.367407] psmouse serio2: synaptics: queried max coordinates: x
[..5662], y [..4728]
[ 2.410703] psmouse serio2: synaptics: queried min coordinates: x
[1322..], y [1190..]
[ 2.493774] psmouse serio2: synaptics: Touchpad model: 1, fw: 8.1, id:
0x1e2b1, caps: 0xd40123/0x840300/0x126800, board id: 2991, fw id:
1626681
[ 2.543305] input: SynPS/2 Synaptics TouchPad as
/devices/platform/i8042/serio2/input/input11

OK, this is normal too.

Cheers,
Benjamin