On 28.02.2015 16:58, Takashi Iwai wrote:
At Sat, 28 Feb 2015 15:03:41 +0900, Michel D4nzer wrote:
On 24.02.2015 18:05, Takashi Iwai wrote:
At Tue, 24 Feb 2015 17:43:10 +0900, Michel D4nzer wrote:
On 19.02.2015 20:38, Takashi Iwai wrote:
At Thu, 19 Feb 2015 15:24:15 +0900, Michel D4nzer wrote:
the built-in speakers of my HP ProBook 455 G2 are not working by default. I'm attaching the output of alsa-info.sh.
[...]
In Linux, I haven't seen any visible change when plugging in or out the headphones.
You can watch the output of "alsactl monitor".
When plugging in headphones:
card 1, #38 (0,0,0,Mic Jack,0) VALUE
So, your headphone is recognized wrongly as a microphone.
Actually, there are two pins for the (black) headphone jack, which BTW has a headset icon next to it. Maybe some kind of headset quirk is needed, or maybe one of the jacks should be gated by the other one?
This implies that the pins aren't properly set up by BIOS. Maybe BIOS update will solve this?
If no BIOS update doesn't solve (or you don't want it),
I already have the latest BIOS version.
you have to figure out the right pin configuration by trial and error. hdajackretask and hda-analyzer would be your friend.
I've been playing around with them, but I don't really know what I'm doing, and I haven't had much luck yet.
Something else I've noticed in the meantime: With inv_jack_detect enabled, I can get sound from the speakers by choosing them for output in the GNOME sound preferences. If I choose "Analog Output - Built-in Audio" there, the sound comes out of the connected headphones.