HID regression: Quanta touchscreen, device ID: 0408:3008

HID regression: Quanta touchscreen, device ID: 0408:3008

[Ming Lei]

Hi,

Quanta touchscreen, device ID: 0408:3008, works well on 3.0, but
double click doesn't work on 3.4-rc2, please refer to detailed report
on the below link.



https://bugs.launchpad.net/ubuntu/+source/linux/+bug/913164/comments/15
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/913164/comments/32

Thanks,
-- 
Ming Lei

Re: HID regression: Quanta touchscreen, device ID: 0408:3008

[Jiri Kosina]

On Mon, 23 Apr 2012, Ming Lei wrote:

> Hi,
> 
> Quanta touchscreen, device ID: 0408:3008, works well on 3.0, but
> double click doesn't work on 3.4-rc2, please refer to detailed report
> on the below link.
> 
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/913164/comments/15
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/913164/comments/32

Ming Lei,

those two links don't provide any detailed report whatsoever. Looking at 

	https://bugs.launchpad.net/ubuntu/+source/linux/+bug/913164

there seems to be quite some discussion, but covering multiple models from 
multiple vendors (and likely multiple different patches needed).

So if there are patches that need to be applied (likely device ID 
additions as far as I understand this monster launchpad bug entry), please 
point me directly to the respective patches or send me a little bit more 
details (VID/PID/protocol needed), and I'll queue the patches.

Thanks,

-- 
Jiri Kosina
SUSE Labs

Re: HID regression: Quanta touchscreen, device ID: 0408:3008

[Ming Lei]

Hi Jiri,

On Mon, Apr 23, 2012 at 9:43 PM, Jiri Kosina <jkosina@suse.cz> wrote:

> those two links don't provide any detailed report whatsoever. Looking at
>
>        https://bugs.launchpad.net/ubuntu/+source/linux/+bug/913164
>
> there seems to be quite some discussion, but covering multiple models from
> multiple vendors (and likely multiple different patches needed).

On comment #14, #15 and #32 of the above link, only the  Quanta touchscreen
(vendor ID: 0408, device ID:3008) is related.

>
> So if there are patches that need to be applied (likely device ID
> additions as far as I understand this monster launchpad bug entry), please
> point me directly to the respective patches or send me a little bit more
> details (VID/PID/protocol needed), and I'll queue the patches.

Sorry, I have not any patches which can make the Quanta touchscreen(0408:3008)
working well, also no any device ID addition patch is need for the device.

You can understand my email as a regression report for the Quanta touchscreen
device, since it works well on 3.0 kernel, but double click stops working
on 3.4-rc2.


Thanks,
-- 
Ming Lei
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Re: HID regression: Quanta touchscreen, device ID: 0408:3008

[Jiri Kosina]

On Mon, 23 Apr 2012, Ming Lei wrote:

> > So if there are patches that need to be applied (likely device ID
> > additions as far as I understand this monster launchpad bug entry), please
> > point me directly to the respective patches or send me a little bit more
> > details (VID/PID/protocol needed), and I'll queue the patches.
> 
> Sorry, I have not any patches which can make the Quanta touchscreen(0408:3008)
> working well, also no any device ID addition patch is need for the device.
> 
> You can understand my email as a regression report for the Quanta touchscreen
> device, since it works well on 3.0 kernel, but double click stops working
> on 3.4-rc2.

Support for 0x3008 PID has been added by Benjamin only in v3.3-rc1 (commit 
5e7ea11f6), so I am not really sure about the level of support you are 
talking about in 3.0 kernel?

Was it perhaps supported by some out of tree driver?

-- 
Jiri Kosina
SUSE Labs

Re: HID regression: Quanta touchscreen, device ID: 0408:3008

[Benjamin Tissoires]

Hi guys,

On Mon, Apr 23, 2012 at 16:19, Ming Lei <tom.leiming@gmail.com> wrote:
> Hi Jiri,
>
> On Mon, Apr 23, 2012 at 9:43 PM, Jiri Kosina <jkosina@suse.cz> wrote:
>
>> those two links don't provide any detailed report whatsoever. Looking at
>>
>>        https://bugs.launchpad.net/ubuntu/+source/linux/+bug/913164
>>
>> there seems to be quite some discussion, but covering multiple models from
>> multiple vendors (and likely multiple different patches needed).
>
> On comment #14, #15 and #32 of the above link, only the  Quanta touchscreen
> (vendor ID: 0408, device ID:3008) is related.
>
>>
>> So if there are patches that need to be applied (likely device ID
>> additions as far as I understand this monster launchpad bug entry), please
>> point me directly to the respective patches or send me a little bit more
>> details (VID/PID/protocol needed), and I'll queue the patches.
>
> Sorry, I have not any patches which can make the Quanta touchscreen(0408:3008)
> working well, also no any device ID addition patch is need for the device.
>
> You can understand my email as a regression report for the Quanta touchscreen
> device, since it works well on 3.0 kernel, but double click stops working
> on 3.4-rc2.

Well, depending on the point of view, it's a regression or a feature ;-)

in kernels pre-3.2 IIRC, this device used the embedded mouse interface
(so the double click "worked"). Now, it's using the generic
hid-multitouch driver, which means that it forwards raw multitouch
events to the upper layers.

The problem relies in the upper layers and not in the kernel: nobody
took the time to code a X.org driver that handles true multitouch
direct devices. You can eventually use the synaptics one, but you will
have to deal with absolute/relative coordinates, and the last time I
played with it, it was not convenient as I was not able to make GDM
use the absolute coordinate system (I kow I should have patched the
synaptics X.org driver).

Cheers,
Benjamin

>
>
> Thanks,
> --
> Ming Lei
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Re: HID regression: Quanta touchscreen, device ID: 0408:3008

[Chase Douglas]

On 04/23/2012 08:34 AM, Benjamin Tissoires wrote:
> The problem relies in the upper layers and not in the kernel: nobody
> took the time to code a X.org driver that handles true multitouch
> direct devices. You can eventually use the synaptics one, but you will
> have to deal with absolute/relative coordinates, and the last time I
> played with it, it was not convenient as I was not able to make GDM
> use the absolute coordinate system (I kow I should have patched the
> synaptics X.org driver).

X now supports direct multitouch devices using the X evdev driver. This
may be a bug in the X server.

-- Chase

Re: HID regression: Quanta touchscreen, device ID: 0408:3008

[Benjamin Tissoires]

On Mon, Apr 23, 2012 at 17:42, Chase Douglas
<chase.douglas@canonical.com> wrote:
> On 04/23/2012 08:34 AM, Benjamin Tissoires wrote:
>> The problem relies in the upper layers and not in the kernel: nobody
>> took the time to code a X.org driver that handles true multitouch
>> direct devices. You can eventually use the synaptics one, but you will
>> have to deal with absolute/relative coordinates, and the last time I
>> played with it, it was not convenient as I was not able to make GDM
>> use the absolute coordinate system (I kow I should have patched the
>> synaptics X.org driver).
>
> X now supports direct multitouch devices using the X evdev driver. This
> may be a bug in the X server.

Yes it does, but does it also emulates right-clicks with double tap?
(It's not an attack ;-), it's just a question as I did not followed
the development of XInput 2.2 since a long time...)

thanks,
Benjamin

>
> -- Chase
> --
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Re: HID regression: Quanta touchscreen, device ID: 0408:3008

[Chase Douglas]

On 04/23/2012 08:48 AM, Benjamin Tissoires wrote:
> On Mon, Apr 23, 2012 at 17:42, Chase Douglas
> <chase.douglas@canonical.com> wrote:
>> On 04/23/2012 08:34 AM, Benjamin Tissoires wrote:
>>> The problem relies in the upper layers and not in the kernel: nobody
>>> took the time to code a X.org driver that handles true multitouch
>>> direct devices. You can eventually use the synaptics one, but you will
>>> have to deal with absolute/relative coordinates, and the last time I
>>> played with it, it was not convenient as I was not able to make GDM
>>> use the absolute coordinate system (I kow I should have patched the
>>> synaptics X.org driver).
>>
>> X now supports direct multitouch devices using the X evdev driver. This
>> may be a bug in the X server.
> 
> Yes it does, but does it also emulates right-clicks with double tap?
> (It's not an attack ;-), it's just a question as I did not followed
> the development of XInput 2.2 since a long time...)

No offense taken :). I merely wanted to point out that it could be a bug
in the X server, too.

In XI 2.2, there is only button 1 emulation. If you double tap it should
double click. If you press and hold, it should press and hold button 1.
There's no "gestural" interpretation in the X server that interprets
touchscreen input and causes a button 2 event.

-- Chase