[-,alsactl,1/1] make systemd service start in proper way

Message ID	56a41b26.5908620a.ff61a.6c10@mx.google.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <alsa-devel-bounces@alsa-project.org> Message-ID: <56a41b26.5908620a.ff61a.6c10@mx.google.com> From: tom.ty89@gmail.com To: patch@alsa-project.org Date: Sun, 24 Jan 2016 08:30:23 +0800 Cc: alsa-devel@alsa-project.org, Tom Yan <tom.ty89@gmail.com> Subject: [alsa-devel] [PATCH - alsactl 1/1] make systemd service start in proper way Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org

Tom Yan Jan. 24, 2016, 12:30 a.m. UTC

From: Tom Yan <tom.ty89@gmail.com>

Use sound.target to trigger the service, which is the proper way
to start a service related to sound card. This also makes sure that
the service will only start if a sound card exists in the system.

basic.target is too early for either of the service:
1. alsa-state.service will spam "No soundcards found" on every boot
2. alsa-restore.service will never start because of
   "ConditionPathExistsGlob=/dev/snd/control*"

"After=sysinit.target" is removed from alsa-state.service because it
never made any sense.

"After=alsa-state.service" is removed from alsa-restore.service because
it is completely unnecessary with the daemon conf switch.

Now either of serivce is enough to manage the state all by itself without
the udev rules if only ONE sound card exists in the system, while the rules
are still necessary in system with multiple sound cards.

"StandardOutput=syslog" is also removed from alsa-restore.service because it
makes little sense (if it has ever switched the behaviour away from default).

Signed-off-by: Tom Yan <tom.ty89@gmail.com>

Takashi Iwai Jan. 24, 2016, 7:56 a.m. UTC | #1

On Sun, 24 Jan 2016 01:30:23 +0100,
tom.ty89@gmail.com wrote:
> 
> From: Tom Yan <tom.ty89@gmail.com>
> 
> Use sound.target to trigger the service, which is the proper way
> to start a service related to sound card. This also makes sure that
> the service will only start if a sound card exists in the system.

Has this target existed in all released versions of systemd?
Just to be sure...

> basic.target is too early for either of the service:
> 1. alsa-state.service will spam "No soundcards found" on every boot

Actually this should be seen as a bug of alsactl itself.  In the
daemon mode, it should be allowed to run without the sound card at
start.

> 2. alsa-restore.service will never start because of
>    "ConditionPathExistsGlob=/dev/snd/control*"

... unless reloading or starting the service later.

> "After=sysinit.target" is removed from alsa-state.service because it
> never made any sense.
> 
> "After=alsa-state.service" is removed from alsa-restore.service because
> it is completely unnecessary with the daemon conf switch.
> 
> Now either of serivce is enough to manage the state all by itself without
> the udev rules if only ONE sound card exists in the system, while the rules
> are still necessary in system with multiple sound cards.

... or with a hotplug device.

> "StandardOutput=syslog" is also removed from alsa-restore.service because it
> makes little sense (if it has ever switched the behaviour away from default).

That's superfluous indeed.


thanks,

Takashi


> Signed-off-by: Tom Yan <tom.ty89@gmail.com>
> 
> diff --git a/alsactl/Makefile.am b/alsactl/Makefile.am
> index cac8094..90fab9d 100644
> --- a/alsactl/Makefile.am
> +++ b/alsactl/Makefile.am
> @@ -29,8 +29,8 @@ systemdsystemunit_DATA = \
>  
>  install-data-hook:
>  	$(MKDIR_P) -m 0755 \
> -		$(DESTDIR)$(systemdsystemunitdir)/basic.target.wants
> -	( cd $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants && \
> +		$(DESTDIR)$(systemdsystemunitdir)/sound.target.wants
> +	( cd $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants && \
>  		rm -f alsa-state.service alsa-restore.service && \
>  		$(LN_S) ../alsa-state.service alsa-state.service && \
>  		$(LN_S) ../alsa-restore.service alsa-restore.service)
> diff --git a/alsactl/alsa-restore.service.in b/alsactl/alsa-restore.service.in
> index 2884098..fbcf983 100644
> --- a/alsactl/alsa-restore.service.in
> +++ b/alsactl/alsa-restore.service.in
> @@ -6,12 +6,9 @@
>  [Unit]
>  Description=Save/Restore Sound Card State
>  ConditionPathExists=!@daemonswitch@
> -ConditionPathExistsGlob=/dev/snd/control*
> -After=alsa-state.service
>  
>  [Service]
>  Type=oneshot
>  RemainAfterExit=true
>  ExecStart=-@sbindir@/alsactl restore
>  ExecStop=-@sbindir@/alsactl store
> -StandardOutput=syslog
> diff --git a/alsactl/alsa-state.service.in b/alsactl/alsa-state.service.in
> index f1321d6..5a8fe5e 100644
> --- a/alsactl/alsa-state.service.in
> +++ b/alsactl/alsa-state.service.in
> @@ -6,7 +6,6 @@
>  [Unit]
>  Description=Manage Sound Card State (restore and store)
>  ConditionPathExists=@daemonswitch@
> -After=sysinit.target
>  
>  [Service]
>  Type=simple
> -- 
> 2.7.0
>

Tom Yan Jan. 24, 2016, 10:48 a.m. UTC | #2

Since v18:
http://cgit.freedesktop.org/systemd/systemd/commit/?id=88dfa2938af09e511e4911e6984360ded0e2cd8d
http://cgit.freedesktop.org/systemd/systemd/tag/?id=v18

On 24 January 2016 at 15:56, Takashi Iwai <tiwai@suse.de> wrote:
> On Sun, 24 Jan 2016 01:30:23 +0100,
> tom.ty89@gmail.com wrote:
>>
>> From: Tom Yan <tom.ty89@gmail.com>
>>
>> Use sound.target to trigger the service, which is the proper way
>> to start a service related to sound card. This also makes sure that
>> the service will only start if a sound card exists in the system.
>
> Has this target existed in all released versions of systemd?
> Just to be sure...
>
>> basic.target is too early for either of the service:
>> 1. alsa-state.service will spam "No soundcards found" on every boot
>
> Actually this should be seen as a bug of alsactl itself.  In the
> daemon mode, it should be allowed to run without the sound card at
> start.
>
>> 2. alsa-restore.service will never start because of
>>    "ConditionPathExistsGlob=/dev/snd/control*"
>
> ... unless reloading or starting the service later.
>
>> "After=sysinit.target" is removed from alsa-state.service because it
>> never made any sense.
>>
>> "After=alsa-state.service" is removed from alsa-restore.service because
>> it is completely unnecessary with the daemon conf switch.
>>
>> Now either of serivce is enough to manage the state all by itself without
>> the udev rules if only ONE sound card exists in the system, while the rules
>> are still necessary in system with multiple sound cards.
>
> ... or with a hotplug device.
>
>> "StandardOutput=syslog" is also removed from alsa-restore.service because it
>> makes little sense (if it has ever switched the behaviour away from default).
>
> That's superfluous indeed.
>
>
> thanks,
>
> Takashi
>
>
>> Signed-off-by: Tom Yan <tom.ty89@gmail.com>
>>
>> diff --git a/alsactl/Makefile.am b/alsactl/Makefile.am
>> index cac8094..90fab9d 100644
>> --- a/alsactl/Makefile.am
>> +++ b/alsactl/Makefile.am
>> @@ -29,8 +29,8 @@ systemdsystemunit_DATA = \
>>
>>  install-data-hook:
>>       $(MKDIR_P) -m 0755 \
>> -             $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants
>> -     ( cd $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants && \
>> +             $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants
>> +     ( cd $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants && \
>>               rm -f alsa-state.service alsa-restore.service && \
>>               $(LN_S) ../alsa-state.service alsa-state.service && \
>>               $(LN_S) ../alsa-restore.service alsa-restore.service)
>> diff --git a/alsactl/alsa-restore.service.in b/alsactl/alsa-restore.service.in
>> index 2884098..fbcf983 100644
>> --- a/alsactl/alsa-restore.service.in
>> +++ b/alsactl/alsa-restore.service.in
>> @@ -6,12 +6,9 @@
>>  [Unit]
>>  Description=Save/Restore Sound Card State
>>  ConditionPathExists=!@daemonswitch@
>> -ConditionPathExistsGlob=/dev/snd/control*
>> -After=alsa-state.service
>>
>>  [Service]
>>  Type=oneshot
>>  RemainAfterExit=true
>>  ExecStart=-@sbindir@/alsactl restore
>>  ExecStop=-@sbindir@/alsactl store
>> -StandardOutput=syslog
>> diff --git a/alsactl/alsa-state.service.in b/alsactl/alsa-state.service.in
>> index f1321d6..5a8fe5e 100644
>> --- a/alsactl/alsa-state.service.in
>> +++ b/alsactl/alsa-state.service.in
>> @@ -6,7 +6,6 @@
>>  [Unit]
>>  Description=Manage Sound Card State (restore and store)
>>  ConditionPathExists=@daemonswitch@
>> -After=sysinit.target
>>
>>  [Service]
>>  Type=simple
>> --
>> 2.7.0
>>

Takashi Iwai Jan. 24, 2016, 11:32 a.m. UTC | #3

On Sun, 24 Jan 2016 11:48:09 +0100,
Tom Yan wrote:
> 
> Since v18:
> http://cgit.freedesktop.org/systemd/systemd/commit/?id=88dfa2938af09e511e4911e6984360ded0e2cd8d
> http://cgit.freedesktop.org/systemd/systemd/tag/?id=v18

OK, it's old enough, but maybe safer to have some check in configure
script?


Takashi

> 
> On 24 January 2016 at 15:56, Takashi Iwai <tiwai@suse.de> wrote:
> > On Sun, 24 Jan 2016 01:30:23 +0100,
> > tom.ty89@gmail.com wrote:
> >>
> >> From: Tom Yan <tom.ty89@gmail.com>
> >>
> >> Use sound.target to trigger the service, which is the proper way
> >> to start a service related to sound card. This also makes sure that
> >> the service will only start if a sound card exists in the system.
> >
> > Has this target existed in all released versions of systemd?
> > Just to be sure...
> >
> >> basic.target is too early for either of the service:
> >> 1. alsa-state.service will spam "No soundcards found" on every boot
> >
> > Actually this should be seen as a bug of alsactl itself.  In the
> > daemon mode, it should be allowed to run without the sound card at
> > start.
> >
> >> 2. alsa-restore.service will never start because of
> >>    "ConditionPathExistsGlob=/dev/snd/control*"
> >
> > ... unless reloading or starting the service later.
> >
> >> "After=sysinit.target" is removed from alsa-state.service because it
> >> never made any sense.
> >>
> >> "After=alsa-state.service" is removed from alsa-restore.service because
> >> it is completely unnecessary with the daemon conf switch.
> >>
> >> Now either of serivce is enough to manage the state all by itself without
> >> the udev rules if only ONE sound card exists in the system, while the rules
> >> are still necessary in system with multiple sound cards.
> >
> > ... or with a hotplug device.
> >
> >> "StandardOutput=syslog" is also removed from alsa-restore.service because it
> >> makes little sense (if it has ever switched the behaviour away from default).
> >
> > That's superfluous indeed.
> >
> >
> > thanks,
> >
> > Takashi
> >
> >
> >> Signed-off-by: Tom Yan <tom.ty89@gmail.com>
> >>
> >> diff --git a/alsactl/Makefile.am b/alsactl/Makefile.am
> >> index cac8094..90fab9d 100644
> >> --- a/alsactl/Makefile.am
> >> +++ b/alsactl/Makefile.am
> >> @@ -29,8 +29,8 @@ systemdsystemunit_DATA = \
> >>
> >>  install-data-hook:
> >>       $(MKDIR_P) -m 0755 \
> >> -             $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants
> >> -     ( cd $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants && \
> >> +             $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants
> >> +     ( cd $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants && \
> >>               rm -f alsa-state.service alsa-restore.service && \
> >>               $(LN_S) ../alsa-state.service alsa-state.service && \
> >>               $(LN_S) ../alsa-restore.service alsa-restore.service)
> >> diff --git a/alsactl/alsa-restore.service.in b/alsactl/alsa-restore.service.in
> >> index 2884098..fbcf983 100644
> >> --- a/alsactl/alsa-restore.service.in
> >> +++ b/alsactl/alsa-restore.service.in
> >> @@ -6,12 +6,9 @@
> >>  [Unit]
> >>  Description=Save/Restore Sound Card State
> >>  ConditionPathExists=!@daemonswitch@
> >> -ConditionPathExistsGlob=/dev/snd/control*
> >> -After=alsa-state.service
> >>
> >>  [Service]
> >>  Type=oneshot
> >>  RemainAfterExit=true
> >>  ExecStart=-@sbindir@/alsactl restore
> >>  ExecStop=-@sbindir@/alsactl store
> >> -StandardOutput=syslog
> >> diff --git a/alsactl/alsa-state.service.in b/alsactl/alsa-state.service.in
> >> index f1321d6..5a8fe5e 100644
> >> --- a/alsactl/alsa-state.service.in
> >> +++ b/alsactl/alsa-state.service.in
> >> @@ -6,7 +6,6 @@
> >>  [Unit]
> >>  Description=Manage Sound Card State (restore and store)
> >>  ConditionPathExists=@daemonswitch@
> >> -After=sysinit.target
> >>
> >>  [Service]
> >>  Type=simple
> >> --
> >> 2.7.0
> >>
>

Tom Yan Jan. 24, 2016, 12:57 p.m. UTC | #4

How do you think the check should be? The symlinks will just be no-op
if sound.target doesn't exist. I'm not gonna introduce some dirty
switch to make it fall back to basic.target.wants for systemd<v18.

On 24 January 2016 at 19:32, Takashi Iwai <tiwai@suse.de> wrote:
> On Sun, 24 Jan 2016 11:48:09 +0100,
> Tom Yan wrote:
>>
>> Since v18:
>> http://cgit.freedesktop.org/systemd/systemd/commit/?id=88dfa2938af09e511e4911e6984360ded0e2cd8d
>> http://cgit.freedesktop.org/systemd/systemd/tag/?id=v18
>
> OK, it's old enough, but maybe safer to have some check in configure
> script?
>
>
> Takashi
>
>>
>> On 24 January 2016 at 15:56, Takashi Iwai <tiwai@suse.de> wrote:
>> > On Sun, 24 Jan 2016 01:30:23 +0100,
>> > tom.ty89@gmail.com wrote:
>> >>
>> >> From: Tom Yan <tom.ty89@gmail.com>
>> >>
>> >> Use sound.target to trigger the service, which is the proper way
>> >> to start a service related to sound card. This also makes sure that
>> >> the service will only start if a sound card exists in the system.
>> >
>> > Has this target existed in all released versions of systemd?
>> > Just to be sure...
>> >
>> >> basic.target is too early for either of the service:
>> >> 1. alsa-state.service will spam "No soundcards found" on every boot
>> >
>> > Actually this should be seen as a bug of alsactl itself.  In the
>> > daemon mode, it should be allowed to run without the sound card at
>> > start.
>> >
>> >> 2. alsa-restore.service will never start because of
>> >>    "ConditionPathExistsGlob=/dev/snd/control*"
>> >
>> > ... unless reloading or starting the service later.
>> >
>> >> "After=sysinit.target" is removed from alsa-state.service because it
>> >> never made any sense.
>> >>
>> >> "After=alsa-state.service" is removed from alsa-restore.service because
>> >> it is completely unnecessary with the daemon conf switch.
>> >>
>> >> Now either of serivce is enough to manage the state all by itself without
>> >> the udev rules if only ONE sound card exists in the system, while the rules
>> >> are still necessary in system with multiple sound cards.
>> >
>> > ... or with a hotplug device.
>> >
>> >> "StandardOutput=syslog" is also removed from alsa-restore.service because it
>> >> makes little sense (if it has ever switched the behaviour away from default).
>> >
>> > That's superfluous indeed.
>> >
>> >
>> > thanks,
>> >
>> > Takashi
>> >
>> >
>> >> Signed-off-by: Tom Yan <tom.ty89@gmail.com>
>> >>
>> >> diff --git a/alsactl/Makefile.am b/alsactl/Makefile.am
>> >> index cac8094..90fab9d 100644
>> >> --- a/alsactl/Makefile.am
>> >> +++ b/alsactl/Makefile.am
>> >> @@ -29,8 +29,8 @@ systemdsystemunit_DATA = \
>> >>
>> >>  install-data-hook:
>> >>       $(MKDIR_P) -m 0755 \
>> >> -             $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants
>> >> -     ( cd $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants && \
>> >> +             $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants
>> >> +     ( cd $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants && \
>> >>               rm -f alsa-state.service alsa-restore.service && \
>> >>               $(LN_S) ../alsa-state.service alsa-state.service && \
>> >>               $(LN_S) ../alsa-restore.service alsa-restore.service)
>> >> diff --git a/alsactl/alsa-restore.service.in b/alsactl/alsa-restore.service.in
>> >> index 2884098..fbcf983 100644
>> >> --- a/alsactl/alsa-restore.service.in
>> >> +++ b/alsactl/alsa-restore.service.in
>> >> @@ -6,12 +6,9 @@
>> >>  [Unit]
>> >>  Description=Save/Restore Sound Card State
>> >>  ConditionPathExists=!@daemonswitch@
>> >> -ConditionPathExistsGlob=/dev/snd/control*
>> >> -After=alsa-state.service
>> >>
>> >>  [Service]
>> >>  Type=oneshot
>> >>  RemainAfterExit=true
>> >>  ExecStart=-@sbindir@/alsactl restore
>> >>  ExecStop=-@sbindir@/alsactl store
>> >> -StandardOutput=syslog
>> >> diff --git a/alsactl/alsa-state.service.in b/alsactl/alsa-state.service.in
>> >> index f1321d6..5a8fe5e 100644
>> >> --- a/alsactl/alsa-state.service.in
>> >> +++ b/alsactl/alsa-state.service.in
>> >> @@ -6,7 +6,6 @@
>> >>  [Unit]
>> >>  Description=Manage Sound Card State (restore and store)
>> >>  ConditionPathExists=@daemonswitch@
>> >> -After=sysinit.target
>> >>
>> >>  [Service]
>> >>  Type=simple
>> >> --
>> >> 2.7.0
>> >>
>>

Takashi Iwai Jan. 24, 2016, 8:49 p.m. UTC | #5

On Sun, 24 Jan 2016 13:57:12 +0100,
Tom Yan wrote:
> 
> How do you think the check should be? The symlinks will just be no-op
> if sound.target doesn't exist. I'm not gonna introduce some dirty
> switch to make it fall back to basic.target.wants for systemd<v18.

Well, for example, we may add a check of systemd version in configure
script and gives a warning if it's under v18, at least.  It's very
unlikely that user still runs such an old version, but we still should
be careful and need some excuse for dropping the support.  And this
should be documented explicitly.


thanks,

Takashi

> On 24 January 2016 at 19:32, Takashi Iwai <tiwai@suse.de> wrote:
> > On Sun, 24 Jan 2016 11:48:09 +0100,
> > Tom Yan wrote:
> >>
> >> Since v18:
> >> http://cgit.freedesktop.org/systemd/systemd/commit/?id=88dfa2938af09e511e4911e6984360ded0e2cd8d
> >> http://cgit.freedesktop.org/systemd/systemd/tag/?id=v18
> >
> > OK, it's old enough, but maybe safer to have some check in configure
> > script?
> >
> >
> > Takashi
> >
> >>
> >> On 24 January 2016 at 15:56, Takashi Iwai <tiwai@suse.de> wrote:
> >> > On Sun, 24 Jan 2016 01:30:23 +0100,
> >> > tom.ty89@gmail.com wrote:
> >> >>
> >> >> From: Tom Yan <tom.ty89@gmail.com>
> >> >>
> >> >> Use sound.target to trigger the service, which is the proper way
> >> >> to start a service related to sound card. This also makes sure that
> >> >> the service will only start if a sound card exists in the system.
> >> >
> >> > Has this target existed in all released versions of systemd?
> >> > Just to be sure...
> >> >
> >> >> basic.target is too early for either of the service:
> >> >> 1. alsa-state.service will spam "No soundcards found" on every boot
> >> >
> >> > Actually this should be seen as a bug of alsactl itself.  In the
> >> > daemon mode, it should be allowed to run without the sound card at
> >> > start.
> >> >
> >> >> 2. alsa-restore.service will never start because of
> >> >>    "ConditionPathExistsGlob=/dev/snd/control*"
> >> >
> >> > ... unless reloading or starting the service later.
> >> >
> >> >> "After=sysinit.target" is removed from alsa-state.service because it
> >> >> never made any sense.
> >> >>
> >> >> "After=alsa-state.service" is removed from alsa-restore.service because
> >> >> it is completely unnecessary with the daemon conf switch.
> >> >>
> >> >> Now either of serivce is enough to manage the state all by itself without
> >> >> the udev rules if only ONE sound card exists in the system, while the rules
> >> >> are still necessary in system with multiple sound cards.
> >> >
> >> > ... or with a hotplug device.
> >> >
> >> >> "StandardOutput=syslog" is also removed from alsa-restore.service because it
> >> >> makes little sense (if it has ever switched the behaviour away from default).
> >> >
> >> > That's superfluous indeed.
> >> >
> >> >
> >> > thanks,
> >> >
> >> > Takashi
> >> >
> >> >
> >> >> Signed-off-by: Tom Yan <tom.ty89@gmail.com>
> >> >>
> >> >> diff --git a/alsactl/Makefile.am b/alsactl/Makefile.am
> >> >> index cac8094..90fab9d 100644
> >> >> --- a/alsactl/Makefile.am
> >> >> +++ b/alsactl/Makefile.am
> >> >> @@ -29,8 +29,8 @@ systemdsystemunit_DATA = \
> >> >>
> >> >>  install-data-hook:
> >> >>       $(MKDIR_P) -m 0755 \
> >> >> -             $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants
> >> >> -     ( cd $(DESTDIR)$(systemdsystemunitdir)/basic.target.wants && \
> >> >> +             $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants
> >> >> +     ( cd $(DESTDIR)$(systemdsystemunitdir)/sound.target.wants && \
> >> >>               rm -f alsa-state.service alsa-restore.service && \
> >> >>               $(LN_S) ../alsa-state.service alsa-state.service && \
> >> >>               $(LN_S) ../alsa-restore.service alsa-restore.service)
> >> >> diff --git a/alsactl/alsa-restore.service.in b/alsactl/alsa-restore.service.in
> >> >> index 2884098..fbcf983 100644
> >> >> --- a/alsactl/alsa-restore.service.in
> >> >> +++ b/alsactl/alsa-restore.service.in
> >> >> @@ -6,12 +6,9 @@
> >> >>  [Unit]
> >> >>  Description=Save/Restore Sound Card State
> >> >>  ConditionPathExists=!@daemonswitch@
> >> >> -ConditionPathExistsGlob=/dev/snd/control*
> >> >> -After=alsa-state.service
> >> >>
> >> >>  [Service]
> >> >>  Type=oneshot
> >> >>  RemainAfterExit=true
> >> >>  ExecStart=-@sbindir@/alsactl restore
> >> >>  ExecStop=-@sbindir@/alsactl store
> >> >> -StandardOutput=syslog
> >> >> diff --git a/alsactl/alsa-state.service.in b/alsactl/alsa-state.service.in
> >> >> index f1321d6..5a8fe5e 100644
> >> >> --- a/alsactl/alsa-state.service.in
> >> >> +++ b/alsactl/alsa-state.service.in
> >> >> @@ -6,7 +6,6 @@
> >> >>  [Unit]
> >> >>  Description=Manage Sound Card State (restore and store)
> >> >>  ConditionPathExists=@daemonswitch@
> >> >> -After=sysinit.target
> >> >>
> >> >>  [Service]
> >> >>  Type=simple
> >> >> --
> >> >> 2.7.0
> >> >>
> >>
>

[-,alsactl,1/1] make systemd service start in proper way

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