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ThinkPad tablet firmware has DMI product name and version reversed:
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: LENOVO
Product Name: 7762AS1
Version: ThinkPad X61 Tablet
Serial Number: LKZCDH2
UUID: 6ADBC681-4FC9-11CB-844F-B47CB9210BE2
Wake-up Type: Power Switch
SKU Number: Not Specified
Family: ThinkPad X61 Tablet
On these several HP laptops, the microphone mute hotkey is "Fn+F8" and
the scancode for this hotkey is 0x81, but this scancode was mapped to
fn_esc in the HP generic keymap section. To fix this problem, we add
a machine specific keymap section to add the correct keymap rule.
BugLink: https://bugs.launchpad.net/bugs/1409721
BugLink: https://bugs.launchpad.net/bugs/1334968
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Currently used to tag devices in the new Lenovo *50 series and the X1 Carbon
3rd. These laptops re-introduced the physical trackpoint buttons that were
missing from the *40 series but those buttons are now wired up to the
touchpad.
The touchpad now sends BTN_0, BTN_1 and BTN_2 for the trackpoint. The same
button codes were used in older touchpads that had dedicated scroll up/down
buttons. Input drivers need to work around this and thus know what they're
dealing with.
For the previous gen we introduced INPUT_PROP_TOPBUTTONPAD in the kernel, but
the resulting mess showed that these per-device quirks should really live in
userspace.
The list currently includes the X1 Carbon 3rd PNPID, others will be added as
get to know which PNPID they have.
Some time ago 95-keymap.rules was replaced by
60-keyboard.hwdb. Original comments for MSI laptops (that were in
95-keymap.rules) were removed, but I think they are important for
understanding what's going on.
https://bugs.freedesktop.org/show_bug.cgi?id=88412
Most mice have a wheel click angle of 15 degrees, i.e. 24 clicks per full
wheel rotation. Some mice, like the Logitech M325 have a larger angle. To
allow userspace to make use of that knowledge, add a property to the hwdb.
This allows for better predictive scrolling. e.g. a mouse that has a smaller
click angle will scroll faster, with this value you can accommodate this
where needed. Likewise, using "half turn of the wheel" or "full turn of the
wheel" as a UI element becomes possible.
This addition is mainly driven by libinput 0.8, having the angle enables
libinput to provide an API that distinguishes between a physical distance
(like touchpad scrolling does) and discrete steps (wheel clicks).
Callers can choose what they prefer based on the device.
Error, DATA expected but got 'mouse:usb:v046dpc24c:name:Logitech G400s Optical
Gaming Mouse:' in '/etc/udev/hwdb.d/70-mouse.hwdb':
Error, MATCH expected but got ' MOUSE_DPI=400@1000 *800@1000 2000@1000
4000@1000' in '/etc/udev/hwdb.d/70-mouse.hwdb':
Introduced in 6366e349
Reporter says he incorrectly measured the data but the device is not available
anymore to correct it. We'll have to wait for someone else to submit the data.
https://bugs.freedesktop.org/show_bug.cgi?id=87343
Note that the MS receivers likely work like the Logitech ones, i.e. all
devices connected show up with the same vid/pid/name. Full evidence remains to
be gathered.
This way entries from the same brand with the same dpi and frequency
can be coalesced. It is also visually easier to find the right DPI
than order hexadecimal identifiers.
