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So I have a Lenovo Thinkpad T15 Gen 2. This Series of laptop have some useless function keys for answering and hanging voip calls and to open the notifications. The problem at hand is that I wish to remap this keys to media keys, playpause, previoussong and nextsong. The events are handled by the thinkpad_acpi driver and generate the following output when running
# evtest /dev/input/event4Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x17aa product 0x5054 version 0x4101
Input device name: "ThinkPad Extra Buttons"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event code 113 (KEY_MUTE)
Event code 114 (KEY_VOLUMEDOWN)
Event code 115 (KEY_VOLUMEUP)
Event code 120 (KEY_SCALE)
Event code 140 (KEY_CALC)
Event code 142 (KEY_SLEEP)
Event code 144 (KEY_FILE)
Event code 148 (KEY_PROG1)
Event code 152 (KEY_SCREENLOCK)
Event code 156 (KEY_BOOKMARKS)
Event code 158 (KEY_BACK)
Event code 171 (KEY_CONFIG)
Event code 173 (KEY_REFRESH)
Event code 190 (KEY_F20)
Event code 191 (KEY_F21)
Event code 194 (KEY_F24)
Event code 205 (KEY_SUSPEND)
Event code 212 (KEY_CAMERA)
Event code 217 (KEY_SEARCH)
Event code 224 (KEY_BRIGHTNESSDOWN)
Event code 225 (KEY_BRIGHTNESSUP)
Event code 227 (KEY_SWITCHVIDEOMODE)
Event code 228 (KEY_KBDILLUMTOGGLE)
Event code 236 (KEY_BATTERY)
Event code 237 (KEY_BLUETOOTH)
Event code 238 (KEY_WLAN)
Event code 240 (KEY_UNKNOWN)
Event code 372 (KEY_ZOOM)
Event code 374 (KEY_KEYBOARD)
Event code 444 (?)
Event code 445 (?)
Event code 446 (?)
Event code 466 (KEY_FN_F1)
Event code 475 (KEY_FN_F10)
Event code 476 (KEY_FN_F11)
Event code 485 (?)
Event code 582 (KEY_VOICECOMMAND)
Event code 592 (KEY_BRIGHTNESS_MIN)
Event code 634 (?)
Event type 4 (EV_MSC)
Event code 4 (MSC_SCAN)
Event type 5 (EV_SW)
Event code 3 (SW_RFKILL_ALL) state 1
Properties:
Testing ... (interrupt to exit)
Event: time 1651590498.360825, type 4 (EV_MSC), code 4 (MSC_SCAN), value 4b
Event: time 1651590498.360825, type 1 (EV_KEY), code 444 (?), value 1
Event: time 1651590498.360825, -------------- SYN_REPORT ------------
Event: time 1651590498.360843, type 4 (EV_MSC), code 4 (MSC_SCAN), value 4b
Event: time 1651590498.360843, type 1 (EV_KEY), code 444 (?), value 0
Event: time 1651590498.360843, -------------- SYN_REPORT ------------
Event: time 1651590498.554188, type 4 (EV_MSC), code 4 (MSC_SCAN), value 4c
Event: time 1651590498.554188, type 1 (EV_KEY), code 445 (?), value 1
Event: time 1651590498.554188, -------------- SYN_REPORT ------------
Event: time 1651590498.554204, type 4 (EV_MSC), code 4 (MSC_SCAN), value 4c
Event: time 1651590498.554204, type 1 (EV_KEY), code 445 (?), value 0
Event: time 1651590498.554204, -------------- SYN_REPORT ------------
Event: time 1651590498.804208, type 4 (EV_MSC), code 4 (MSC_SCAN), value 4d
Event: time 1651590498.804208, type 1 (EV_KEY), code 446 (?), value 1
Event: time 1651590498.804208, -------------- SYN_REPORT ------------
Event: time 1651590498.804224, type 4 (EV_MSC), code 4 (MSC_SCAN), value 4d
Event: time 1651590498.804224, type 1 (EV_KEY), code 446 (?), value 0
Event: time 1651590498.804224, -------------- SYN_REPORT ------------I tried remapping those scancodes (4b,4c,4d) using hwdb but it doens't work. I followed this guide. I tried modifying the /lib/udev/hwdb.d/60-keyboard.hwdb and creating a new one (e.g.: /etc/udev/hwdb.d/99-custom.hwdb.
I later tried using the setkeycodes tools in the following way
# setkeycodes 4b 165 4c 164 4d 163But still no luck. So is this even possible? Is there another method to remap scancodes? Do I have to modify the driver?
Last edited by martor (2022-05-03 15:31:34)
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I found the answer. I was modifying the thinkpad_acpi driver's ibm section in the /lib/udev/hwdb.d/60-keyboard.hwdb. After moving my modifications to the Lenovo section I was able to correctly remap the voip and notification fn-keys to the media keys I desired. Here is the part of the file I modified. (starting at line 779)
###########################################################
# Lenovo
###########################################################
# thinkpad_acpi driver
evdev:name:ThinkPad Extra Buttons:dmi:bvn*:bvr*:bd*:svnLENOVO*:pn*:*
KEYBOARD_KEY_01=screenlock
KEYBOARD_KEY_02=battery
KEYBOARD_KEY_03=sleep
KEYBOARD_KEY_04=wlan
KEYBOARD_KEY_06=switchvideomode
KEYBOARD_KEY_07=f21
KEYBOARD_KEY_08=f24
KEYBOARD_KEY_0b=suspend
KEYBOARD_KEY_0f=brightnessup
KEYBOARD_KEY_10=brightnessdown
KEYBOARD_KEY_11=kbdillumtoggle
KEYBOARD_KEY_13=zoom
KEYBOARD_KEY_14=volumeup
KEYBOARD_KEY_15=volumedown
KEYBOARD_KEY_16=mute
KEYBOARD_KEY_17=prog1
KEYBOARD_KEY_1a=f20 # Microphone mute button; should be micmute
KEYBOARD_KEY_4b=previoussong # Notification key
KEYBOARD_KEY_4c=playpause # Answer Voip call key
KEYBOARD_KEY_4d=nextsong # Hang Voip call key
KEYBOARD_KEY_45=bookmarksOffline
Won't this method overwrite 60-keyboard.hwdb when systemd package is updated?
It's better to put the rebinds into your own .hwdb file inside /etc/udev/hwdb.d/, e.g.:
/etc/udev/hwdb.d/90-thinkpad-t15-g2-rebinds.hwdbevdev:name:ThinkPad Extra Buttons:dmi:bvn*:bvr*:bd*:svnLENOVO*:pn*:*
KEYBOARD_KEY_4b=previoussong # Notification key
KEYBOARD_KEY_4c=playpause # Answer Voip call key
KEYBOARD_KEY_4d=nextsong # Hang Voip call keyTo apply changes, rebuild hwdb binary database and reload inputs:
sudo systemd-hwdb update
sudo udevadm triggerLast edited by temkyn (2023-02-08 10:09:22)
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