Hot Keys Issue - Lenovo T500

[Charles Profitt]

Information gathered at the request of slangseek per - https://wiki.ubuntu.com/Hotkeys/Troubleshooting
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xev | sed -n 's/^.*state \([0-9].*\), keycode *\([0-9]\+\) *\(.*\), .*$/keycode \2 = \3, state = \1/p'

keycode 36 = (keysym 0xff0d, Return), state = 0x10
keycode 122 = (keysym 0x1008ff11, XF86AudioLowerVolume), state = 0x10
keycode 122 = (keysym 0x1008ff11, XF86AudioLowerVolume), state = 0x10
keycode 123 = (keysym 0x1008ff13, XF86AudioRaiseVolume), state = 0x10
keycode 123 = (keysym 0x1008ff13, XF86AudioRaiseVolume), state = 0x10

note: keycode36 was not the result of a keypress, 122 was volume down and 123 volume up. There was no result for mute.
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hal-find-by-capability --capability input | xargs -n1 lshal -u | grep info.product
udi = '/org/freedesktop/Hal/devices/computer_logicaldev_input_4'
  button.has_state = true (bool)
  button.state.value = true (bool)
  button.type = 'radio' (string)
  info.addons.singleton = {'hald-addon-input'} (string list)
  info.callouts.add = {'hal-setup-keymap', 'debian-setup-keyboard'} (string list)
  info.capabilities = {'input', 'input.keys', 'input.switch', 'button', 'input.keymap'} (string list)
  info.category = 'input' (string)
  info.parent = '/org/freedesktop/Hal/devices/computer' (string)
  info.product = 'ThinkPad Extra Buttons' (string)
  info.subsystem = 'input' (string)
  info.udi = '/org/freedesktop/Hal/devices/computer_logicaldev_input_4' (string)
  input.device = '/dev/input/event9' (string)
  input.keymap.data = {'0x01:screenlock', '0x02:battery', '0x03:sleep', '0x04:radio', '0x06:switchvideomode', '0x07:f22', '0x08:f24', '0x0b:suspend', '0x0f:brightnessup', '0x10:brightnessdown', '0x11:kbdillumtoggle', '0x13:zoom', '0x14:volumeup', '0x15:volumedown', '0x16:mute', '0x17:prog1'} (string list)
  input.product = 'ThinkPad Extra Buttons' (string)
  input.x11_driver = 'evdev' (string)
  input.xkb.layout = 'us' (string)
  input.xkb.model = 'pc105' (string)
  input.xkb.rules = 'evdev' (string)
  linux.device_file = '/dev/input/event9' (string)
  linux.hotplug_type = 2 (0x2) (int)
  linux.subsystem = 'input' (string)
  linux.sysfs_path = '/sys/devices/virtual/input/input9/event9' (string)
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sudo input-events 9 resulted in no events
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acpi_listen resulted in no events
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contents of /sys/devices/platform/thinkpad_acpi/hotkey_mask:
0x038c7fff
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I have attached a zip file with the requested files

[Charles Profitt (cprofitt)]

Assigned to vorlon per his request

[Charles Profitt (cprofitt)]

The behavior is:

volume up and volume down result in the OSD pop-up being displayed and the volume going up and down. Mute does not result in any OSD nor the volume icon in the upper panel showing mute, but sound is muted.

[Steve Langasek (vorlon)]

Charles,

Do you see these events when you run sudo input_events against the main keyboard device instead of the hotkeys device (device #4 in the tarball you attached, though this may change on each reboot)?

Recent Thinkpads are said to handle volume buttons differently than older models (cf. http://mjg59.livejournal.com/110870.html), which could explain why the volume up/down keys are behaving the way you describe, but doesn't explain why the mute button is inactive.

[Timothy Pearson (kb9vqf)]

This is also an issue on the ThinkPad T400 series, which has identical mixer hardware AFAIK.

[Aristid Breitkreuz (aristid-breitkreuz)]

The bug is particularly annoying because pressing mute twice does NOT unmute. You need to press volume-up or volume-down to reenable sound. Nor does any mixer device even notice that sound is muted.

[TomasHnyk (sup)]

Steve: the output if input_events pasted below:

volume-up and volume-down are reported correctly, mute is not, also power button does not get reported.

drew@steve:~$ sudo input-events 4
/dev/input/event4
   bustype : BUS_I8042
   vendor : 0x1
   product : 0x1
   version : 43860
   name : "AT Translated Set 2 keyboard"
   phys : "isa0060/serio0/input0"
   bits ev : EV_SYN EV_KEY EV_MSC EV_LED EV_REP

waiting for events
15:24:12.989796: EV_MSC code=4 value=174
15:24:12.989820: EV_KEY KEY_VOLUMEDOWN (0x72) pressed
15:24:12.989826: EV_SYN code=0 value=0
15:24:13.053871: EV_MSC code=4 value=174
15:24:13.053898: EV_KEY KEY_VOLUMEDOWN (0x72) released
15:24:13.053904: EV_SYN code=0 value=0
15:24:13.549428: EV_MSC code=4 value=176
15:24:13.549453: EV_KEY KEY_VOLUMEUP (0x73) pressed
15:24:13.549458: EV_SYN code=0 value=0
15:24:13.588939: EV_MSC code=4 value=176
15:24:13.588967: EV_KEY KEY_VOLUMEUP (0x73) released
15:24:13.588974: EV_SYN code=0 value=0