Message: previous - next
Month: May 2018

Re: [trinity-users] HP laptop volume keys don't work

From: Jan Stolarek <jan.stolarek@...>
Date: Wed, 23 May 2018 23:15:29 +0100
Hi Dan,

> The volume buttons will move the onscreen indicator between 0% and 10%, but no
> farther, and the volume setting is unaffected. 
Is this something that used to work up until recently and has just stopped? I just found myself in 
an identical situation. Until a few days ago I had volume up/down buttons on my Thinkpad working 
correctly, changing the volume between 0% and 100% and triggering an OSD with each change. The 
only non-working thing was the mute button which would mute the sound but pressing it again 
wouldn't unmute all the channels. I had to manually unmute channels in KMix to get the sound 
back. Same problem has been described in this thread by another TDE user.

Starting a few days ago volume up/down buttons no longer work. They will change sound volume by 5% 
up/down but no more than that. They also don't trigger an OSD. Also, mute button now works 
normally - it mutes and unmutes sound without any need to manually unmute the channels. Since it 
looks like I'm not the only one experiencing this issue I am suspecting a recent set of Trinity 
updates. I have insstalled a larger set of updates on the 12th May. Dan, does this correlate with 
any updates that you may have installed?

Some more background info. I have Pulseaudio on my system. My laptop is a ThinkPad P50 running 
latest Debian. I have KMilo plugin installed. According to acpi_listen volume up/down events are 
generated correctly for the buttons, but they don't generate any events in xev. Keys are however 
recognized in TDE applications like KMix or Amarok - I can assign them as global shortcuts. They 
just don't work afterwards. Also, I tried using tpb in hope to get some sort of OSD but it 
doesn't work.

One thing I am tempted to try is uninstalling pulseaudio to see whether it makes any difference. 
Another solution would be capturing key events via acpi and handling them through DCOP. This 
requires hacking a script, which I don't have the time to do in the next three weeks.


Politechnika Łódzka 
Lodz University of Technology 

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