Questions[media-buttons](ubuntu)

I'm in the process of getting 20.04 setup after having upgraded from 19.04, and part of it is getting my MM keys to work with spotify. While trying to make the custom shortcuts, I have run into a problem. On pre-existing system shortcuts, the MM keys on my keyboard are registered as valid inputs, and can be assigned:

However while trying to assign a keybind to a custom shortcut, the keypress is not recognized, and I am left on this screen:

What I have tried so far:

• As suggested in the comments, followed this post's suggestion of disabling default play/pause keys from dconf-editor. No change.
• I tried with a second keyboard (also with media keys), to no avail
• I tried to bind a key and unbind it, also no help
• Looked around in gnome-tweaks in case something got added/updated but couldn't find anything.
• Came across this post, however, the solution there now shoots an error:

david@david-pc:~$ gsettings set org.gnome.settings-daemon.plugins.media-keys previous ''
expected value:
  (empty input)
  ^

• After updating to kernel 5.4.0-28-generic, the media keys worked briefly, then seemingly randomly stopped again. After rebooting, the media keys started working again, then promptly stopped working after around 15 minutes.

Is this a bug, or am I doing something wrong? Either way, I would love an answer/workaround.

I'm on Ubuntu 18.04 using a Das Keyboard 4. After a reboot today three of my media keys stopped working, the pause/play key and the prev/next track keys.

However, the mute key and the volume wheel still work.

I tried the following things with no success:

• Going into the keyboards shortcuts settings and setting the keys for these shortcuts explicitly. It does seem to register the keypress but setting or clearing the shortcut doesn't help.
• Messing around in dconf-editor per discussion in Media Keys not working on Ubuntu 17.10 - I tried clearing the setting for these shortcuts entirely and that did nothing.
• I tried creating a custom shortcut to run dbus-send --print-reply --dest=org.mpris.MediaPlayer2.rhythmbox /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.PlayPause per that same discussion, but I cannot associate it with the pause/play key from the keyboard shortcuts app. When I try to set the shortcut for this custom command it simply doesn't register the pause/play key being pressed. If I bind it to Ctrl+Alt+Shift+P it does work (but I want my media keys!).

This is incredibly annoying. If anyone has any idea how to fix it I'd be greatly appreciative.

Following on from the solutions in this question, I've been trying to get simulated media keys working on Ubuntu 18.04 on a Lenovo T480s.

First step was to verify that the command xdotool key --clearmodifiers XF86AudioPlay and indeed it did.

Next I remapped the existing functions however this resulted in the following symbol being displayed: .

After attempting to use this new shortcut, the command line version stopped working as well (would display the same symbol).

I reverted the remapped commands and tried again using custom shortcut mappings with no success.

Eventually something I am doing seems to cause the command line version to work again (haven't been able to figure out what, just seems to happen after doing other tasks for a while) but it will break as soon as I attempt to use one of the defined shortcuts.

Can anyone shed some light what I'm doing here that is causing the keyboard shortcuts to not only not work but to get into an unworkable state?

I'm having the same problem as this person: Fn Media keys slow/delayed on ubuntu gnome 17.04

I've already looked everywhere, and I could not find an answer. AskUbuntu, the Arch Wiki, Reddit, Discord, IRC, etc. Nothing. I don't think I can put much more detail into this because it's the same problem and it happens every time without fail. Not happening on Wayland, so indeed an Xorg issue.

This also happens on the Budgie desktop and on the default Gnome desktop, so I'm starting to think that this is something to do with Gnome/GTK but I have no idea how to fix it on my system, absolutely no clue.

I'm on Ubuntu 17.10, on Intel Integrated Graphics on an i3 3217U and 8GBs of RAM. Laptop model is an ASUS X550C.

If I turn up the volume on Ubuntu 17.10, it sometimes continues to the maximum. Given that I only pressed the button once, it should theoretically increment the volume only by one step. Note that I am only aware of the problem happening with volume control buttons, and not any other method of adjusting the volume since I never use those.

How can I fix that?

EDIT

System specs

$ lspci -v
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
    Subsystem: CLEVO/KAPOK Computer Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller
    Flags: bus master, fast devsel, latency 0
    Capabilities: <access denied>
    Kernel modules: ie31200_edac

00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
    I/O behind bridge: 0000e000-0000efff
    Memory behind bridge: f6000000-f70fffff
    Prefetchable memory behind bridge: 00000000e0000000-00000000f1ffffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
    Subsystem: CLEVO/KAPOK Computer 4th Gen Core Processor Integrated Graphics Controller
    Flags: bus master, fast devsel, latency 0, IRQ 28
    Memory at f7400000 (64-bit, non-prefetchable) [size=4M]
    Memory at d0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at f000 [size=64]
    [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: i915
    Kernel modules: i915

00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
    Subsystem: CLEVO/KAPOK Computer Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller
    Flags: bus master, fast devsel, latency 0, IRQ 29
    Memory at f7a14000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel

00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05) (prog-if 30 [XHCI])
    Subsystem: CLEVO/KAPOK Computer 8 Series/C220 Series Chipset Family USB xHCI
    Flags: bus master, medium devsel, latency 0, IRQ 24
    Memory at f7a00000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: <access denied>
    Kernel driver in use: xhci_hcd

00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
    Subsystem: CLEVO/KAPOK Computer 8 Series/C220 Series Chipset Family MEI Controller
    Flags: bus master, fast devsel, latency 0, IRQ 30
    Memory at f7a1e000 (64-bit, non-prefetchable) [size=16]
    Capabilities: <access denied>
    Kernel driver in use: mei_me
    Kernel modules: mei_me

00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05) (prog-if 20 [EHCI])
    Subsystem: CLEVO/KAPOK Computer 8 Series/C220 Series Chipset Family USB EHCI
    Flags: bus master, medium devsel, latency 0, IRQ 16
    Memory at f7a1c000 (32-bit, non-prefetchable) [size=1K]
    Capabilities: <access denied>
    Kernel driver in use: ehci-pci

00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
    Subsystem: CLEVO/KAPOK Computer 8 Series/C220 Series Chipset High Definition Audio Controller
    Flags: bus master, fast devsel, latency 0, IRQ 31
    Memory at f7a10000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel

00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 18
    Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
    Memory behind bridge: f7900000-f79fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d5) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 19
    Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
    I/O behind bridge: 0000d000-0000dfff
    Memory behind bridge: f7800000-f78fffff
    Prefetchable memory behind bridge: 00000000f2100000-00000000f21fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05) (prog-if 20 [EHCI])
    Subsystem: CLEVO/KAPOK Computer 8 Series/C220 Series Chipset Family USB EHCI
    Flags: bus master, medium devsel, latency 0, IRQ 23
    Memory at f7a1b000 (32-bit, non-prefetchable) [size=1K]
    Capabilities: <access denied>
    Kernel driver in use: ehci-pci

00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 05)
    Subsystem: CLEVO/KAPOK Computer HM86 Express LPC Controller
    Flags: bus master, medium devsel, latency 0
    Capabilities: <access denied>
    Kernel driver in use: lpc_ich
    Kernel modules: lpc_ich

00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05) (prog-if 01 [AHCI 1.0])
    Subsystem: CLEVO/KAPOK Computer 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode]
    Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 26
    I/O ports at f0b0 [size=8]
    I/O ports at f0a0 [size=4]
    I/O ports at f090 [size=8]
    I/O ports at f080 [size=4]
    I/O ports at f060 [size=32]
    Memory at f7a1a000 (32-bit, non-prefetchable) [size=2K]
    Capabilities: <access denied>
    Kernel driver in use: ahci
    Kernel modules: ahci

00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
    Subsystem: CLEVO/KAPOK Computer 8 Series/C220 Series Chipset Family SMBus Controller
    Flags: medium devsel, IRQ 255
    Memory at f7a19000 (64-bit, non-prefetchable) [size=256]
    I/O ports at f040 [size=32]
    Kernel modules: i2c_i801

01:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 840M] (rev a2)
    Subsystem: CLEVO/KAPOK Computer GM108M [GeForce 840M]
    Flags: bus master, fast devsel, latency 0, IRQ 255
    Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    Memory at f0000000 (64-bit, prefetchable) [size=32M]
    I/O ports at e000 [disabled] [size=128]
    Expansion ROM at f7000000 [disabled] [size=512K]
    Capabilities: <access denied>
    Kernel modules: nvidiafb, nouveau

03:00.0 Network controller: Intel Corporation Wireless 7260 (rev c3)
    Subsystem: Intel Corporation Wireless-N 7260
    Flags: bus master, fast devsel, latency 0, IRQ 32
    Memory at f7900000 (64-bit, non-prefetchable) [size=8K]
    Capabilities: <access denied>
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi

04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8411 PCI Express Card Reader (rev 01)
    Subsystem: CLEVO/KAPOK Computer RTL8411 PCI Express Card Reader
    Flags: bus master, fast devsel, latency 0, IRQ 25
    Memory at f7800000 (32-bit, non-prefetchable) [size=64K]
    Capabilities: <access denied>
    Kernel driver in use: rtsx_pci
    Kernel modules: rtsx_pci

04:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0a)
    Subsystem: CLEVO/KAPOK Computer RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
    Flags: bus master, fast devsel, latency 0, IRQ 27
    I/O ports at d000 [size=256]
    Memory at f2104000 (64-bit, prefetchable) [size=4K]
    Memory at f2100000 (64-bit, prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: r8169
    Kernel modules: r8169