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 <[email protected]> > 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 <[email protected]> > Signed-off-by: Takashi Iwai <[email protected]> > > 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
