Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Acer Chromebook R13 wiki audio #10

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Acer Chromebook R13 wiki audio #10

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
37 changes: 34 additions & 3 deletions Acer_Chromebook_R13.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,10 +1,10 @@
## Xorg

* The PowerVR GX6250 GPU is not supported at this time. Therefore, no particular Xorg drivers are needed. The built in modesetting driver will correctly detect the display.
* xf86-input-libinput is preferred over evdev and synaptics for the best experience with the touchpad and touchscreen.
* xf86-input-libinput is preferred over evdev and synaptics for the best experience with the touchpad and touchscreen. Touch controls on the touchscreen only align when the screen is in laptop orientation.

## Audio
The following channels must be unmuted for the speakers to work. The alsamixer utility (part of alsa-utils) can be used to do this by navigating with the arrow keys and pressing **m** to unmute the channel.
The following channels must be unmuted for the speakers to work. The alsamixer utility (part of alsa-utils) can be used to do this by navigating with the arrow keys and pressing **m** to unmute the channel. If pulseaudio or similar audio mixers are installed, you must use the F6 key when in alsamixer to switch from pulseaudio to the sound device.

* Speaker Channel
* DAC MIXL DAC L2
Expand All @@ -30,4 +30,35 @@ The following channels must be unmuted for the speakers to work. The alsamixer
* SPOR MIX DAC R1
* SPOR MIX SPKVOL R

You may also want to decrease the DAC1 gain value, otherwise audio will still be fairly loud at the lowest setting.
Audio via amixer (also included in the alsa-utils package) may automate this a bit. The channels above can be used via number id (cset numid). The numbers corresponding to the above channels are (in order): 1 89 90 88 87 86 85 110 109 108 107 145 144 81 77 68 67 54 53 56 55 51 52

A simple commandline to do this (in BASH or related shells) is:
* for i in 1 89 90 88 87 86 85 110 109 108 107 145 144 81 77 68 67 54 53 56 55 51 52; do amixer -c 0 cset numid=$i on; done

You may also want to decrease the DAC1 (cset numid=10) gain value, otherwise audio will still be fairly loud at the lowest setting.

Headphones:
* HPOVOL L Switch
* HPOVOL R Switch
* HPOVOL MIXL DAC1 Switch
* HPOVOL MIXR DAC1 Switch
* HPO MIX DAC1 Switch

A command for enabling headphones as above is:
* for i in 58 57 63 59 49; do amixer -c 0 cset numid=$i on; done

Muting/Unmuting:

Mute Headphones
* amixer cset numid=4 off

Unmute Headphones
* amixer cset numid=4 on

Mute Speakers
* amixer cset numid=25 off

Unmute Speakers
* amixer cset numid=25 on