Re: [Alsa-devel] Loud POP from sound system during module init w/ 2.6.19
At Fri, 8 Dec 2006 13:53:46 -0500, Ian E. Morgan wrote: > > Since upgrading to 2.6.19, two of my boxes (one workstation, one > notebook) started making a very loud (and scary) POP from the sound > system when the alsa modules are loaded. Unloading and reloading the > modules will generate another pop. > > I have removed any fiddling of mixer settings during module > load/unload; same results. > > I have complied the kernel both with and without > CONFIG_SND_AC97_POWER_SAVE; same results. > > The workstation uses snd_emu10k1, the notebook snd_intel8x0, so it's > affecting more than a single driver. > > Anybody else seeing this behaviour and know how to stop it? Hm, interesting. I thought this should be avoided by disabling CONFIG_SND_AC97_POWER_SAVE Kconfig. Do you get the noise at unloading or at loading time? If it's at unloading time, it's likely in some part of snd_ac97_powerdown(), handling of AC97_POWERDOWN bits, I guess. 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/
Re: [Alsa-devel] Loud POP from sound system during module init w/ 2.6.19
At Fri, 8 Dec 2006 13:53:46 -0500, Ian E. Morgan wrote: Since upgrading to 2.6.19, two of my boxes (one workstation, one notebook) started making a very loud (and scary) POP from the sound system when the alsa modules are loaded. Unloading and reloading the modules will generate another pop. I have removed any fiddling of mixer settings during module load/unload; same results. I have complied the kernel both with and without CONFIG_SND_AC97_POWER_SAVE; same results. The workstation uses snd_emu10k1, the notebook snd_intel8x0, so it's affecting more than a single driver. Anybody else seeing this behaviour and know how to stop it? Hm, interesting. I thought this should be avoided by disabling CONFIG_SND_AC97_POWER_SAVE Kconfig. Do you get the noise at unloading or at loading time? If it's at unloading time, it's likely in some part of snd_ac97_powerdown(), handling of AC97_POWERDOWN bits, I guess. 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/
Re: Loud POP from sound system during module init w/ 2.6.19
On Dec 9 2006 08:17, Ian E. Morgan wrote: > > Previous kernel was 2.6.18.3, which did not exhibit the problem. I was > aware of udev setting the mixer at module load time, but I disabled > that and the problem still exists. Another reason might be that the sound driver sets the initial volume (even before udev can act) to 100%. That's probably Not So Good. I'd suggest to take a diff between 2.6.18.3's sound tree and the 2.6.19 one, and see if the driver for your card changed. -`J' -- - 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/
Re: Loud POP from sound system during module init w/ 2.6.19
Previous kernel was 2.6.18.3, which did not exhibit the problem. I was aware of udev setting the mixer at module load time, but I disabled that and the problem still exists. -- Ian E. Morgan [EMAIL PROTECTED] On 09/12/06, Jan Engelhardt <[EMAIL PROTECTED]> wrote: On Dec 8 2006 13:53, Ian E. Morgan wrote: >Subject: Loud POP from sound system during module init w/ 2.6.19 What kernel did you have before? What you see is the same I am experiencing on every boot - when the sound module is loaded, udev loads the previous volume settings. The volume settings are normal for me, but I guess the instant jump from 0-70% (for Master) and 0-61% (for PCM) is not taken too heartly by the soundcard. > Since upgrading to 2.6.19, two of my boxes (one workstation, one > notebook) started making a very loud (and scary) POP from the sound > system when the alsa modules are loaded. Unloading and reloading the > modules will generate another pop. > > Anybody else seeing this behaviour and know how to stop it? - 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/
Re: Loud POP from sound system during module init w/ 2.6.19
On Dec 8 2006 13:53, Ian E. Morgan wrote: >Subject: Loud POP from sound system during module init w/ 2.6.19 What kernel did you have before? What you see is the same I am experiencing on every boot - when the sound module is loaded, udev loads the previous volume settings. The volume settings are normal for me, but I guess the instant jump from 0-70% (for Master) and 0-61% (for PCM) is not taken too heartly by the soundcard. > Since upgrading to 2.6.19, two of my boxes (one workstation, one > notebook) started making a very loud (and scary) POP from the sound > system when the alsa modules are loaded. Unloading and reloading the > modules will generate another pop. > > Anybody else seeing this behaviour and know how to stop it? > -`J' -- - 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/
Re: Loud POP from sound system during module init w/ 2.6.19
On Dec 8 2006 13:53, Ian E. Morgan wrote: Subject: Loud POP from sound system during module init w/ 2.6.19 What kernel did you have before? What you see is the same I am experiencing on every boot - when the sound module is loaded, udev loads the previous volume settings. The volume settings are normal for me, but I guess the instant jump from 0-70% (for Master) and 0-61% (for PCM) is not taken too heartly by the soundcard. Since upgrading to 2.6.19, two of my boxes (one workstation, one notebook) started making a very loud (and scary) POP from the sound system when the alsa modules are loaded. Unloading and reloading the modules will generate another pop. Anybody else seeing this behaviour and know how to stop it? -`J' -- - 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/
Re: Loud POP from sound system during module init w/ 2.6.19
Previous kernel was 2.6.18.3, which did not exhibit the problem. I was aware of udev setting the mixer at module load time, but I disabled that and the problem still exists. -- Ian E. Morgan [EMAIL PROTECTED] On 09/12/06, Jan Engelhardt [EMAIL PROTECTED] wrote: On Dec 8 2006 13:53, Ian E. Morgan wrote: Subject: Loud POP from sound system during module init w/ 2.6.19 What kernel did you have before? What you see is the same I am experiencing on every boot - when the sound module is loaded, udev loads the previous volume settings. The volume settings are normal for me, but I guess the instant jump from 0-70% (for Master) and 0-61% (for PCM) is not taken too heartly by the soundcard. Since upgrading to 2.6.19, two of my boxes (one workstation, one notebook) started making a very loud (and scary) POP from the sound system when the alsa modules are loaded. Unloading and reloading the modules will generate another pop. Anybody else seeing this behaviour and know how to stop it? - 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/
Re: Loud POP from sound system during module init w/ 2.6.19
On Dec 9 2006 08:17, Ian E. Morgan wrote: Previous kernel was 2.6.18.3, which did not exhibit the problem. I was aware of udev setting the mixer at module load time, but I disabled that and the problem still exists. Another reason might be that the sound driver sets the initial volume (even before udev can act) to 100%. That's probably Not So Good. I'd suggest to take a diff between 2.6.18.3's sound tree and the 2.6.19 one, and see if the driver for your card changed. -`J' -- - 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/
Loud POP from sound system during module init w/ 2.6.19
Since upgrading to 2.6.19, two of my boxes (one workstation, one notebook) started making a very loud (and scary) POP from the sound system when the alsa modules are loaded. Unloading and reloading the modules will generate another pop. I have removed any fiddling of mixer settings during module load/unload; same results. I have complied the kernel both with and without CONFIG_SND_AC97_POWER_SAVE; same results. The workstation uses snd_emu10k1, the notebook snd_intel8x0, so it's affecting more than a single driver. Anybody else seeing this behaviour and know how to stop it? -- Ian E. Morgan [EMAIL PROTECTED] - 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/
Loud POP from sound system during module init w/ 2.6.19
Since upgrading to 2.6.19, two of my boxes (one workstation, one notebook) started making a very loud (and scary) POP from the sound system when the alsa modules are loaded. Unloading and reloading the modules will generate another pop. I have removed any fiddling of mixer settings during module load/unload; same results. I have complied the kernel both with and without CONFIG_SND_AC97_POWER_SAVE; same results. The workstation uses snd_emu10k1, the notebook snd_intel8x0, so it's affecting more than a single driver. Anybody else seeing this behaviour and know how to stop it? -- Ian E. Morgan [EMAIL PROTECTED] - 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/
