Bug 70991
| Summary: | Mute LED on HP Folio 13-2000 doesn't work | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Stefan Nagy (stefan.nagy) |
| Component: | Sound(ALSA) | Assignee: | Jaroslav Kysela (perex) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | low | CC: | tiwai |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 3.12.9 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
output of dmidecode
output of alsa-info script output of lspci -vvnn dmesg output Fix patch |
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Created attachment 127011 [details]
output of alsa-info script
Created attachment 127021 [details]
output of lspci -vvnn
Created attachment 127031 [details]
dmesg output
First off, your BIOS is buggy. It must have filled numbers in P and G of "HP_Mute_LED_P_G" DMI string. For setting the values manually, you can pass gpio_led and gpio_led_polarity hint strings by early firmware patch (via "patch" module option). In anyway, you need to figure out which GPIO pin corresponds to the mute LED. You can toggle each gpio bit with hda-verb. For setting the GPIO bit 0, hda-verb /dev/snd/hwC0D0 SET_GPIO_MASK 0x01 hda-verb /dev/snd/hwC0D0 SET_GPIO_DIR 0x01 hda-verb /dev/snd/hwC0D0 SET_GPIO_DATA 0x01 clearing the bit 0, hda-verb /dev/snd/hwC0D0 SET_GPIO_DATA 0x00 For setting the GPIO bit 1, hda-verb /dev/snd/hwC0D0 SET_GPIO_MASK 0x02 hda-verb /dev/snd/hwC0D0 SET_GPIO_DIR 0x02 hda-verb /dev/snd/hwC0D0 SET_GPIO_DATA 0x02 Fog GPIO bit 2, use 0x04, etc. As default bit 3 (0x08) is used. Once when you figure out which GPIO bit toggles the mute LED, pass it to gpio_led hint string and also pass either gpio_led_polarity=0 or gpio_led_polarity=1 depending on the mute LED condition (0 = on or 0 = off). For that, create a file like /lib/firmware/alsa/hp-mute, containing the contents like: [codec] 0x111d76e5 0x103c1899 0 [hint] gpio_led = 0x08 gpio_led_polarity = 0 Then pass it via patch option of snd-hda-intel module, e.g. create a file /etc/modprobe.d/50-sound.conf containing options snd-hda-intel patch=alsa/hp-mute For some details, see Documentation/sound/alsa/HD-Audio.txt. Thanks for the detailed info! After playing around for some time I figured out that GPIO bit 4 toggles the mute LED on this notebook. As suggested I created a file /lib/firmware/alsa/hp-mute containing: [codec] 0x111d76e5 0x103c1899 0 [hint] gpio_led = 0x10 gpio_led_polarity = 0 Then I created a file /etc/modprobe.d/50-sound.conf containing: options snd-hda-intel patch=alsa/hp-mute Now the mute LED works as expected (on when muted). OK, good to hear. Does your laptop have a mic mute LED, too (typically on F8 key)? If not, I can provide a patch to assign statically the GPIO pin for this machine. No, there's no mic mute LED present on this notebook. I'd be happy to test your patch, thanks. Created attachment 127301 [details]
Fix patch
I applied the patch attached to comment #8 on top of kernel v3.13.5 and I can confirm that it fixes this bug: the mute LED on HP Folio 13-2000 works as expected. Thanks for testing. The patch is merged now to sound git tree, will be included in the next 3.14-rc, and backported to stable later. Great, thanks! |
Created attachment 127001 [details] output of dmidecode While the mute key on the HP Folio 13-2000 (Fn+F11) works fine, the integrated LED won't work at all. The expected behavior is: on when muted and off when not muted. Since my notebook reports the string HP_Mute_LED_P_G in DMI I'll attach the output of dmidecode.