Not a big deal, but something nonetheless ...
I recently upgraded my kernel from 4.3 to 4.8.1 (this is a Linux From
Scratch build). There was only one obvious hiccup - X would not
start because it no longer saw the mouse.
I have a Logitech RX250 PS2/USB mouse on the PS/2 port (via a USB->PS2
adapter):
http://support.logitech.com/en_gb/product/rx250-mouse
The RX250 is a wheel mouse, but with an added left/right scroll wheel
"tilt" feature to provide for horizontal scrolling.
In my xorg.conf I had:
Section "InputDevice"
Identifier "Mouse0"
Driver "evdev"
Option "Name" "ImExPS/2 Logitech Explorer Mouse"
EndSection
However, under the 4.8.1 kernel, cat /proc/bus/input/devices shows:
I: Bus=0011 Vendor=0002 Product=0006 Version=0073
N: Name="ImExPS/2 BYD TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input3
U: Uniq=
H: Handlers=mouse0 event2
B: PROP=1
B: EV=7
B: KEY=1f0000 0 0 0 0 0 0 0 0
B: REL=143
and dmesg shows the lines:
psmouse serio1: logips2pp: Detected unknown Logitech mouse model 115
input: ImExPS/2 BYD TouchPad as /devices/platform/i8042/serio1/input/input3
Changing the mouse name in xorg.conf to "ImExPS/2 BYD TouchPad" did
allow the mouse to work correctly under X, including the tilt buttons.
FWIW, in the 4.8.1 kernel config, the byd.c driver does default to
"Yes", a default which I accepted under make oldconfig.
Apparently, the detection code (byd_detect) in the new byd.c driver,
which did not even exist in 4.3, (drivers/input/mouse/byd.c) falsely
sees the Logitech RX250 as being a BYD TouchPad and thus alters the
vendor and model names.
I do not know if it is also desirable to add an entry for a Logitech
model 115 in get_model_info in logips2pp.c
(drivers/input/mouse/logips2pp.c). But if so, I would be willing to
test any such new code. Even as an unknown Logitech model, it does
work just fine. I am curious as to how the tilt feature buttons would
be declared in the model info (would these be PS2PP_EXTRA_BTN,
or PS2PP_NAV_BTN, etc.?)
Cheers and thanks in advance,
Mike Shell
Sorry for the late response, forwarding to Dmitry and linux-input.
I haven't dealt with input in years...
Michael Shell <[email protected]> wrote:
>
> Not a big deal, but something nonetheless ...
>
> I recently upgraded my kernel from 4.3 to 4.8.1 (this is a Linux From
> Scratch build). There was only one obvious hiccup - X would not
> start because it no longer saw the mouse.
>
> I have a Logitech RX250 PS2/USB mouse on the PS/2 port (via a USB->PS2
> adapter):
>
> http://support.logitech.com/en_gb/product/rx250-mouse
>
> The RX250 is a wheel mouse, but with an added left/right scroll wheel
> "tilt" feature to provide for horizontal scrolling.
>
> In my xorg.conf I had:
>
>
> Section "InputDevice"
> Identifier "Mouse0"
> Driver "evdev"
> Option "Name" "ImExPS/2 Logitech Explorer Mouse"
> EndSection
>
>
> However, under the 4.8.1 kernel, cat /proc/bus/input/devices shows:
>
>
> I: Bus=0011 Vendor=0002 Product=0006 Version=0073
> N: Name="ImExPS/2 BYD TouchPad"
> P: Phys=isa0060/serio1/input0
> S: Sysfs=/devices/platform/i8042/serio1/input/input3
> U: Uniq=
> H: Handlers=mouse0 event2
> B: PROP=1
> B: EV=7
> B: KEY=1f0000 0 0 0 0 0 0 0 0
> B: REL=143
>
>
> and dmesg shows the lines:
>
>
> psmouse serio1: logips2pp: Detected unknown Logitech mouse model 115
> input: ImExPS/2 BYD TouchPad as /devices/platform/i8042/serio1/input/input3
>
>
> Changing the mouse name in xorg.conf to "ImExPS/2 BYD TouchPad" did
> allow the mouse to work correctly under X, including the tilt buttons.
> FWIW, in the 4.8.1 kernel config, the byd.c driver does default to
> "Yes", a default which I accepted under make oldconfig.
>
> Apparently, the detection code (byd_detect) in the new byd.c driver,
> which did not even exist in 4.3, (drivers/input/mouse/byd.c) falsely
> sees the Logitech RX250 as being a BYD TouchPad and thus alters the
> vendor and model names.
>
> I do not know if it is also desirable to add an entry for a Logitech
> model 115 in get_model_info in logips2pp.c
> (drivers/input/mouse/logips2pp.c). But if so, I would be willing to
> test any such new code. Even as an unknown Logitech model, it does
> work just fine. I am curious as to how the tilt feature buttons would
> be declared in the model info (would these be PS2PP_EXTRA_BTN,
> or PS2PP_NAV_BTN, etc.?)
>
>
>
> Cheers and thanks in advance,
>
> Mike Shell
>
On Friday 11 November 2016, Eric Wong wrote:
> Sorry for the late response, forwarding to Dmitry and linux-input.
> I haven't dealt with input in years...
>
> Michael Shell <[email protected]> wrote:
> > Not a big deal, but something nonetheless ...
> >
> > I recently upgraded my kernel from 4.3 to 4.8.1 (this is a Linux From
> > Scratch build). There was only one obvious hiccup - X would not
> > start because it no longer saw the mouse.
> >
> > I have a Logitech RX250 PS2/USB mouse on the PS/2 port (via a USB->PS2
> > adapter):
> >
> > http://support.logitech.com/en_gb/product/rx250-mouse
> >
> > The RX250 is a wheel mouse, but with an added left/right scroll wheel
> > "tilt" feature to provide for horizontal scrolling.
> >
> > In my xorg.conf I had:
> >
> >
> > Section "InputDevice"
> > Identifier "Mouse0"
> > Driver "evdev"
> > Option "Name" "ImExPS/2 Logitech Explorer Mouse"
> > EndSection
> >
> >
> > However, under the 4.8.1 kernel, cat /proc/bus/input/devices shows:
> >
> >
> > I: Bus=0011 Vendor=0002 Product=0006 Version=0073
> > N: Name="ImExPS/2 BYD TouchPad"
> > P: Phys=isa0060/serio1/input0
> > S: Sysfs=/devices/platform/i8042/serio1/input/input3
> > U: Uniq=
> > H: Handlers=mouse0 event2
> > B: PROP=1
> > B: EV=7
> > B: KEY=1f0000 0 0 0 0 0 0 0 0
> > B: REL=143
> >
> >
> > and dmesg shows the lines:
> >
> >
> > psmouse serio1: logips2pp: Detected unknown Logitech mouse model 115
> > input: ImExPS/2 BYD TouchPad as
> > /devices/platform/i8042/serio1/input/input3
> >
> >
> > Changing the mouse name in xorg.conf to "ImExPS/2 BYD TouchPad" did
> > allow the mouse to work correctly under X, including the tilt buttons.
> > FWIW, in the 4.8.1 kernel config, the byd.c driver does default to
> > "Yes", a default which I accepted under make oldconfig.
> >
> > Apparently, the detection code (byd_detect) in the new byd.c driver,
> > which did not even exist in 4.3, (drivers/input/mouse/byd.c) falsely
> > sees the Logitech RX250 as being a BYD TouchPad and thus alters the
> > vendor and model names.
> >
> > I do not know if it is also desirable to add an entry for a Logitech
> > model 115 in get_model_info in logips2pp.c
> > (drivers/input/mouse/logips2pp.c). But if so, I would be willing to
> > test any such new code. Even as an unknown Logitech model, it does
> > work just fine. I am curious as to how the tilt feature buttons would
> > be declared in the model info (would these be PS2PP_EXTRA_BTN,
> > or PS2PP_NAV_BTN, etc.?)
> >
> >
> >
> > Cheers and thanks in advance,
> >
> > Mike Shell
The BYD detection is broken. I've seen at least 3 different mice detected as
BYD touchpad.
--
Ondrej Zary