Le 05/08/2012 14:57, Takashi Iwai a écrit : > At Sun, 05 Aug 2012 14:36:19 +0200, > Vincent Blut wrote: >> Hi, >> >> Despite that the subject might suggest that this is a bug in the graphic >> stack, it appears that >> commit [b4a91cf0] makes the GDM greeter not loadable, however GDM has >> been correctly loaded: >> >> # service gdm3 status >> [ ok ] gdm3 is running. >> >> This issue only affects Linux 3.5 when I boot on battery, I spent some >> time to bisect and this commit seems to be the bad one: >> >> commit b4a91cf05c33d4ab5b2b3738a257a3fe49b462bd >> Author: Dylan Reid <dgr...@chromium.org> >> Date: Fri Jun 15 19:36:23 2012 -0700 >> >> ALSA: hda - Handle open while transitioning to D3. >> >> This addresses an issue encountered when a pcm is opened while >> transitioning to low power state (codec->power_on == 1 && >> codec->power_transition == -1). Add snd_pcm_power_up_d3wait to >> hda_codec. This function is used to power up from azx_open as opposed >> to snd_hda_power_up used from codec_exec_verb. When powering up from >> azx_open, wait for pending power downs to complete, avoiding the power >> up continuing in parallel with the power down on the work queue. >> >> The specific issue seen was with the CS4210 codec, it powers off the ADC >> and DAC nid in its suspend handler. If it is re-opened before the >> ~100ms power down process completes, the ADC and DAC nid are initialized >> while powered down and audio is lost until another suspend/resume cycle. >> >> Signed-off-by: Dylan Reid <dgr...@chromium.org> >> Signed-off-by: Takashi Iwai <ti...@suse.de> >> >> Is this a known issue? > Yes. There is a known side-effect by this change, and the fix was > already queued for 3.5.1 stable kernel. > > > thanks, > > Takashi Ok, thanks a lot Takashi for the quick answer!
Cheers, Vincent -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
