Bug 140591
| Summary: | [PATCH][sound] No sound output on lineout/headphone jacks using AD1980 AC'97 codec chip (Fujitsu C610) | ||||||
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| Product: | Base System | Reporter: | Taketo Kabe <kabe> | ||||
| Component: | kern | Assignee: | freebsd-bugs (Nobody) <bugs> | ||||
| Status: | Open --- | ||||||
| Severity: | Affects Only Me | ||||||
| Priority: | Normal | ||||||
| Version: | 7.2-RELEASE | ||||||
| Hardware: | Any | ||||||
| OS: | Any | ||||||
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Responsible Changed From-To: freebsd-bugs->freebsd-multimedia Over to maintainer(s). For bugs matching the following criteria: Status: In Progress Changed: (is less than) 2014-06-01 Reset to default assignee and clear in-progress tags. Mail being skipped |
Internal speaker perfectly works, but headphone or lineout jacks have no audio output. Fix: The patch below will only fix Fujitsu C610, but just collapsing into void ad198x_patch(struct ac97_info* codec) { ac97_wrcd(codec, 0x76, ac97_rdcd(codec, 0x76) | 0x0400); } seems to be the better solution. Also backportable to older FreeBSD. (cd /usr/src; env TZ=GMT diff -u sys/dev/sound/pcm/ac97_patch.c{.dist,}) How-To-Repeat: With motherboards with AD1980 codec, and monitoring its LINE_OUT pins, play some audio. No audio output. SURR_OUT/HP_OUT pins will have output. These AD1980 pins may be wired in various ways to lineout/headphone/internal speakers, and some configuration (particulary laptops) may not have one of the output wired.