2.6.34-rc1: regression: ^Z no longer stops sound
in [Kernel]
|
Prev: [GIT PULL] nilfs2 fixes for 2.6.34
Next: [tip:core/urgent] x86/mce: Fix build bug with CONFIG_PROVE_LOCKING=y && CONFIG_X86_MCE_INTEL=y
From: Maciej Rutecki on 20 Mar 2010 16:00 On niedziela, 14 marca 2010 o 08:58:31 Pavel Machek wrote: > Hi! > > In 2.6.33, hitting ^Z stopped mpg123 in a way you'd expect (both on > thinkpad and geode notebook). > > On 2.6.34-rc1, hit ^Z and sound starts looping. > Pavel > I created a Bugzilla entry at https://bugzilla.kernel.org/show_bug.cgi?id=15590 for your bug report, please add your address to the CC list in there, thanks! -- Maciej Rutecki http://www.maciek.unixy.pl -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Pavel Machek on 23 Mar 2010 10:10 On Sun 2010-03-14 17:20:13, Bill Davidsen wrote: > Pavel Machek wrote: >> Hi! >> >> In 2.6.33, hitting ^Z stopped mpg123 in a way you'd expect (both on >> thinkpad and geode notebook). >> >> On 2.6.34-rc1, hit ^Z and sound starts looping. >> Pavel > That's not new, I have seen it back as far as 2.6.27.25 doing a suspend > in a VM (KVM, no libvirt). But it only happens a few times a year, so I > never chased it. I hate to report an occasional problem in an obsolete > kernel, and I can't reproduce it. > > Does it happen repeatably with the new kernel? It happened reliably so far, yes. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Clemens Ladisch on 23 Mar 2010 10:10 Pavel Machek wrote: > On Sun 2010-03-14 17:20:13, Bill Davidsen wrote: >> Pavel Machek wrote: >>> In 2.6.33, hitting ^Z stopped mpg123 in a way you'd expect (both on >>> thinkpad and geode notebook). >>> >>> On 2.6.34-rc1, hit ^Z and sound starts looping. >> >> That's not new, I have seen it back as far as 2.6.27.25 doing a suspend >> in a VM (KVM, no libvirt). But it only happens a few times a year, so I >> never chased it. I hate to report an occasional problem in an obsolete >> kernel, and I can't reproduce it. >> >> Does it happen repeatably with the new kernel? > > It happened reliably so far, yes. This sounds as if the device has been configured to ignore underruns. What are the contents of /proc/asound/card0/pcm0p/sub0/{sw_params,status} when it's looping, and when it's really suspended? Regards, Clemens -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Bill Davidsen on 24 Mar 2010 12:50 Clemens Ladisch wrote: > Pavel Machek wrote: > >> On Sun 2010-03-14 17:20:13, Bill Davidsen wrote: >> >>> Pavel Machek wrote: >>> >>>> In 2.6.33, hitting ^Z stopped mpg123 in a way you'd expect (both on >>>> thinkpad and geode notebook). >>>> >>>> On 2.6.34-rc1, hit ^Z and sound starts looping. >>>> >>> That's not new, I have seen it back as far as 2.6.27.25 doing a suspend >>> in a VM (KVM, no libvirt). But it only happens a few times a year, so I >>> never chased it. I hate to report an occasional problem in an obsolete >>> kernel, and I can't reproduce it. >>> >>> Does it happen repeatably with the new kernel? >>> >> It happened reliably so far, yes. >> > > This sounds as if the device has been configured to ignore underruns. > What are the contents of /proc/asound/card0/pcm0p/sub0/{sw_params,status} > when it's looping, and when it's really suspended? > If you can give me a hint how to read /proc when the machine is suspended, other than waking it up, I'll certainly check the next time I see it. But after reading your thought on underruns, I think you right. I see from a note I wrote myself that I get this while pushing a wav file over the network to run "play" (from sox) on another machine. Every once in a while it finds a musical phrase it really likes. I had assumed it was a bug in sox, but a bug or mis-configure in the device fits all of the observed cases I've seen. -- Bill Davidsen <davidsen(a)tmr.com> "We can't solve today's problems by using the same thinking we used in creating them." - Einstein -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Pavel Machek on 27 Mar 2010 16:00
On Sat 2010-03-20 20:55:46, Maciej Rutecki wrote: > On niedziela, 14 marca 2010 o 08:58:31 Pavel Machek wrote: > > Hi! > > > > In 2.6.33, hitting ^Z stopped mpg123 in a way you'd expect (both on > > thinkpad and geode notebook). > > > > On 2.6.34-rc1, hit ^Z and sound starts looping. > > Pavel > > > I created a Bugzilla entry at > https://bugzilla.kernel.org/show_bug.cgi?id=15590 > for your bug report, please add your address to the CC list in > there, thanks! It was fixed by patch in "[for 2.6.34][PATCH] ALSA: pcm_lib - fix xrun functionality" thread. It should already be in sound tree. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |