Another thing you can check: dmesg | grep -i hpet
You'll see if your h/w supports it. You can read more at http://en.wikipedia.org/wiki/High_Precision_Event_Timer J. --- On Sat, 11/7/09, Ralf Mardorf <ralf.mard...@alice-dsl.net> wrote: > From: Ralf Mardorf <ralf.mard...@alice-dsl.net> > Subject: Re: [LAD] timers > To: "James Warden" <warj...@yahoo.com> > Cc: linux-audio-dev@lists.linuxaudio.org > Date: Saturday, November 7, 2009, 8:57 AM > Thank you very much James and Ray > :). > > Ralf > > James Warden wrote: > > yeah, I have added a few things in a startup script. > Among other things, I have: > > > > chgrp audio /dev/hpet > > echo 1024 > /proc/sys/dev/hpet/max-user-freq > > modprobe snd-hrtimer > > > > The modprobe may not be needed anymore as my kernel is > using hr-timer by default. I wrote this script quite some > time ago and forgot about it :) > > > > J. > > > > --- On Sat, 11/7/09, Ralf Mardorf <ralf.mard...@alice-dsl.net> > wrote: > > > > > >> From: Ralf Mardorf <ralf.mard...@alice-dsl.net> > >> Subject: Re: [LAD] timers > >> To: Cc: linux-audio-dev@lists.linuxaudio.org > >> Date: Saturday, November 7, 2009, 8:52 AM > >> James Warden wrote: > >> > >>> Ralf, > >>> > >>> It depends how ALSA was compiled in the > kernel. Here > >>> > >> is my kernel config related to this matter: > >> > >>> CONFIG_SND=m > >>> CONFIG_SND_TIMER=m > >>> CONFIG_SND_PCM=m > >>> CONFIG_SND_HWDEP=m > >>> CONFIG_SND_RAWMIDI=m > >>> CONFIG_SND_SEQUENCER=m > >>> CONFIG_SND_SEQ_DUMMY=m > >>> # CONFIG_SND_MIXER_OSS is not set > >>> # CONFIG_SND_PCM_OSS is not set > >>> # CONFIG_SND_SEQUENCER_OSS is not set > >>> CONFIG_SND_HRTIMER=m > >>> CONFIG_SND_SEQ_HRTIMER_DEFAULT=y > >>> > >>> J. > >>> > >> There is another question I've got :S. > >> > >> spinymouse-s...@64studio:~$ ls -l /dev | grep > hpet > >> crw-rw---- 1 > root root 10, 228 2009-11-07 > 13:38 hpet > >> > >> The group for hpet isn't audio, thus I guess a > user won't > >> be able to use it?! > >> > >> Oops, "# CONFIG_SND_HRTIMER is not set", has this > now > >> become something I should post to the 64 Studio > list? It's the default for the > >> 64 Studio kernel. It's not a self build kernel. > >> > >> spinymouse-s...@64studio:~$ cat > >> /boot/config-2.6.29-1-multimedia-amd64 | grep > CONFIG_SND > >> CONFIG_SND=m > >> CONFIG_SND_TIMER=m > >> CONFIG_SND_PCM=m > >> CONFIG_SND_HWDEP=m > >> CONFIG_SND_RAWMIDI=m > >> CONFIG_SND_JACK=y > >> CONFIG_SND_SEQUENCER=m > >> CONFIG_SND_SEQ_DUMMY=m > >> CONFIG_SND_OSSEMUL=y > >> CONFIG_SND_MIXER_OSS=m > >> CONFIG_SND_PCM_OSS=m > >> CONFIG_SND_PCM_OSS_PLUGINS=y > >> CONFIG_SND_SEQUENCER_OSS=y > >> # CONFIG_SND_HRTIMER is not set > >> # CONFIG_SND_DYNAMIC_MINORS is not set > >> CONFIG_SND_SUPPORT_OLD_API=y > >> CONFIG_SND_VERBOSE_PROCFS=y > >> # CONFIG_SND_VERBOSE_PRINTK is not set > >> # CONFIG_SND_DEBUG is not set > >> CONFIG_SND_VMASTER=y > >> CONFIG_SND_MPU401_UART=m > >> CONFIG_SND_OPL3_LIB=m > >> CONFIG_SND_VX_LIB=m > >> CONFIG_SND_AC97_CODEC=m > >> CONFIG_SND_DRIVERS=y > >> CONFIG_SND_PCSP=m > >> CONFIG_SND_DUMMY=m > >> CONFIG_SND_VIRMIDI=m > >> CONFIG_SND_MTS64=m > >> CONFIG_SND_SERIAL_U16550=m > >> CONFIG_SND_MPU401=m > >> CONFIG_SND_PORTMAN2X4=m > >> CONFIG_SND_AC97_POWER_SAVE=y > >> CONFIG_SND_AC97_POWER_SAVE_DEFAULT=0 > >> CONFIG_SND_SB_COMMON=m > >> CONFIG_SND_SB16_DSP=m > >> CONFIG_SND_PCI=y > >> CONFIG_SND_AD1889=m > >> CONFIG_SND_ALS300=m > >> CONFIG_SND_ALS4000=m > >> CONFIG_SND_ALI5451=m > >> CONFIG_SND_ATIIXP=m > >> CONFIG_SND_ATIIXP_MODEM=m > >> CONFIG_SND_AU8810=m > >> CONFIG_SND_AU8820=m > >> CONFIG_SND_AU8830=m > >> # CONFIG_SND_AW2 is not set > >> CONFIG_SND_AZT3328=m > >> CONFIG_SND_BT87X=m > >> # CONFIG_SND_BT87X_OVERCLOCK is not set > >> CONFIG_SND_CA0106=m > >> CONFIG_SND_CMIPCI=m > >> CONFIG_SND_OXYGEN_LIB=m > >> CONFIG_SND_OXYGEN=m > >> CONFIG_SND_CS4281=m > >> CONFIG_SND_CS46XX=m > >> CONFIG_SND_CS46XX_NEW_DSP=y > >> CONFIG_SND_CS5530=m > >> CONFIG_SND_DARLA20=m > >> CONFIG_SND_GINA20=m > >> CONFIG_SND_LAYLA20=m > >> CONFIG_SND_DARLA24=m > >> CONFIG_SND_GINA24=m > >> CONFIG_SND_LAYLA24=m > >> CONFIG_SND_MONA=m > >> CONFIG_SND_MIA=m > >> CONFIG_SND_ECHO3G=m > >> CONFIG_SND_INDIGO=m > >> CONFIG_SND_INDIGOIO=m > >> CONFIG_SND_INDIGODJ=m > >> CONFIG_SND_EMU10K1=m > >> CONFIG_SND_EMU10K1X=m > >> CONFIG_SND_ENS1370=m > >> CONFIG_SND_ENS1371=m > >> CONFIG_SND_ES1938=m > >> CONFIG_SND_ES1968=m > >> CONFIG_SND_FM801=m > >> CONFIG_SND_FM801_TEA575X_BOOL=y > >> CONFIG_SND_FM801_TEA575X=m > >> CONFIG_SND_HDA_INTEL=m > >> # CONFIG_SND_HDA_HWDEP is not set > >> CONFIG_SND_HDA_INPUT_BEEP=y > >> CONFIG_SND_HDA_CODEC_REALTEK=y > >> CONFIG_SND_HDA_CODEC_ANALOG=y > >> CONFIG_SND_HDA_CODEC_SIGMATEL=y > >> CONFIG_SND_HDA_CODEC_VIA=y > >> CONFIG_SND_HDA_CODEC_ATIHDMI=y > >> CONFIG_SND_HDA_CODEC_NVHDMI=y > >> CONFIG_SND_HDA_CODEC_INTELHDMI=y > >> CONFIG_SND_HDA_ELD=y > >> CONFIG_SND_HDA_CODEC_CONEXANT=y > >> CONFIG_SND_HDA_CODEC_CMEDIA=y > >> CONFIG_SND_HDA_CODEC_SI3054=y > >> CONFIG_SND_HDA_GENERIC=y > >> CONFIG_SND_HDA_POWER_SAVE=y > >> CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0 > >> CONFIG_SND_HDSP=m > >> CONFIG_SND_HDSPM=m > >> CONFIG_SND_HIFIER=m > >> CONFIG_SND_ICE1712=m > >> CONFIG_SND_ICE1724=m > >> CONFIG_SND_INTEL8X0=m > >> CONFIG_SND_INTEL8X0M=m > >> CONFIG_SND_KORG1212=m > >> CONFIG_SND_MAESTRO3=m > >> CONFIG_SND_MIXART=m > >> CONFIG_SND_NM256=m > >> CONFIG_SND_PCXHR=m > >> CONFIG_SND_RIPTIDE=m > >> CONFIG_SND_RME32=m > >> CONFIG_SND_RME96=m > >> CONFIG_SND_RME9652=m > >> CONFIG_SND_SONICVIBES=m > >> CONFIG_SND_TRIDENT=m > >> CONFIG_SND_VIA82XX=m > >> CONFIG_SND_VIA82XX_MODEM=m > >> CONFIG_SND_VIRTUOSO=m > >> CONFIG_SND_VX222=m > >> CONFIG_SND_YMFPCI=m > >> CONFIG_SND_SPI=y > >> CONFIG_SND_USB=y > >> CONFIG_SND_USB_AUDIO=m > >> CONFIG_SND_USB_USX2Y=m > >> CONFIG_SND_USB_CAIAQ=m > >> CONFIG_SND_USB_CAIAQ_INPUT=y > >> CONFIG_SND_USB_US122L=m > >> CONFIG_SND_PCMCIA=y > >> CONFIG_SND_VXPOCKET=m > >> CONFIG_SND_PDAUDIOCF=m > >> # CONFIG_SND_SOC is not set > >> _______________________________________________ > >> Linux-audio-dev mailing list > >> Linux-audio-dev@lists.linuxaudio.org > >> http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev > >> > >> > > > > > > > > > > -- Secret of Tux: > http://images.wallaceandgromit.com/user_uploads/forum_thumbnails/5/75/355.jpg > "Gromit bit me" says HMV dog: > http://img.dailymail.co.uk/i/pix/2007/03_03/GomitHMVPA_468x319.jpg > > _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
