Failed boot after enabling devmon service with systemctl

I've recently reinstalled Arch and in trying to get a proper automount solution working I was playing with udevil and devmon. First I disabled and uninstalled ldm, which wasn't working as I wanted. Then installed udevil via pacman. I couldn't find proper instructions at first so I ran:
# systemctl enable [email protected]
and then rebooted. But that didn't work. Then I found something saying to run:
# systemctl enable [email protected]
So I disabled devmon@ and enabled devmon@MYUSERNAME then rebooted.
As the system was shutting down it seemed to get stuck at a part about trying to save a random seed. I walked away for 10 minutes but when I came back nothing had changed so I hit the hard reset button. As it rebooted I could just barely see a whole lot of red [FAILED] signs flashing past my screen. When the screen comes to rest I am greeted by this. Once it gets to this point it doesn't accept any input from the keyboard except for Ctrl-Alt-Del which seems to cleanly reboot.
So far I've booted my arch install cd and run the following on all my partitions along with trying the -p, -r and -a options.
# fsck /dev/sda2
Nothing I ran seemed to produce any output that would suggest there are any problems or anything like an error code 8, which I've read elsewhere is an operational error, whatever that means.
Next I read up about chroot and gave that a go. I chrooted into my arch install and decided to disable the devmon@MYUSERNAME service and uninstall udevil incase that was interfering somehow. I also checked out the journalctl per the screenshots instructions but didn't really understand it. Also not sure on where that log information is stored so I can upload it here.
Any help would be appreciated.
Last edited by greatant (2013-06-11 11:02:07)

I've not made any progress with this issue. I've decided it has to do with the random seed, but I can't find any information on it via ArchWiki, searching the forum or google.

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AMD AuthenticAMD
NSC Geode by NSC
Cyrix CyrixInstead
Centaur CentaurHauls
Transmeta GenuineTMx86
Transmeta TransmetaCPU
UMC UMC UMC UMC
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modified: 0000000000010000 - 000000000009fc00 (usable)
modified: 000000000009fc00 - 00000000000a0000 (reserved)
modified: 00000000000e0000 - 0000000000100000 (reserved)
modified: 0000000000100000 - 000000002ffd0000 (usable)
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modified: 00000000fec00000 - 00000000fec01000 (reserved)
modified: 00000000ff780000 - 0000000100000000 (reserved)
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ACPI: RSDT 2ffd0000 0002C (v01 A M I OEMRSDT 09000521 MSFT 00000097)
ACPI: FACP 2ffd0200 00084 (v02 A M I OEMFACP 09000521 MSFT 00000097)
ACPI: DSDT 2ffd0390 03270 (v01 MiniV MiniV080 00000080 INTL 02002026)
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ACPI: OEMB 2ffde040 00046 (v01 A M I AMI_OEM 09000521 MSFT 00000097)
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low ram: 0 - 2ffd0000
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#8 [0000011000 - 0000017000] BOOTMAP ==> [0000011000 - 0000017000]
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DMA 0x00000010 -> 0x00001000
Normal 0x00001000 -> 0x0002ffd0
HighMem 0x0002ffd0 -> 0x0002ffd0
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0: 0x00000100 -> 0x0002ffd0
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pci 0000:00:07.0: PME# supported from D0 D3hot D3cold
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pci 0000:00:10.0: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:00:10.0: PME# disabled
pci 0000:00:10.1: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:00:10.1: PME# disabled
pci 0000:00:10.2: PME# supported from D0 D1 D2 D3hot D3cold
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system 00:05: ioport range 0xea00-0xea0f has been reserved
system 00:05: ioport range 0xeb00-0xeb2f has been reserved
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serio: i8042 AUX port at 0x60,0x64 irq 12
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'Test1' Microsoft Emulated IDE Controller (Instance ID {83F8638B-8DCA-4152-9EDA-2CA8B33039B4}): Failed to Power on with Error 'The service cannot be started, either because it is disabled or because it has no enabled devices associated with it.' (0x80070422).
(Virtual machine ID 4320D2D6-DF7E-40D2-BD0F-9562CBB9F052)
'Test1': Failed to open attachment 'C:\Users\Public\Documents\Hyper-V\Virtual hard disks\New Virtual Hard Disk.vhd'. Error: 'The service cannot be started, either because it is disabled or because it has no enabled devices associated with it.' (0x80070422).
(Virtual machine ID 4320D2D6-DF7E-40D2-BD0F-9562CBB9F052)
Any Ideas?

Hi ,
Did you try to disable the services , if they are exsit :
HP Smart Array SAS/SATAEvent notification
HP Insight storage agents
Then restart your server .
Best Regards
Elton Ji
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Running mplayer at boot with systemctl. fails with alsa-lib error

I am running Arch ARM on a raspberry pi and would like to use it as a headless music player.
I am trying to run mplayer in slave mode at start up and have in read from a fifo pipe which I could write to over SSH.
I have written this mplayer.service file:
[Unit]
Description='mplayer service'
[Service]
ExecStart=/usr/bin/tmux new-session -d -s mplayer 'mplayer -idle -input file=/systemdservice/mplayerfifo /systemdservice/1.mp3 &> /systemdservice/mplayererror.log'
User=user
Type=forking
[Install]
WantedBy=multi-user.target
When I start this service with 'sudo systemctl start mplayer.service' I get the following output:
MPlayer SVN-r36285-4.8.1 (C) 2000-2013 MPlayer Team
Cannot test OS support for SSE, disabling to be safe.
205 audio & 424 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing /systemdservice/1.mp3.
libavformat version 55.7.100 (internal)
Audio only file format detected.
Load subtitles in /systemdservice/
==========================================================================
Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III
AUDIO: 44100 Hz, 2 ch, s16le, 32.0 kbit/2.27% (ratio: 4000->176400)
Selected audio codec: [mpg123] afm: mpg123 (MPEG 1.0/2.0/2.5 layers I, II, III)
==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:768:(parse_card) cannot find card '1'
[AO_ALSA] alsa-lib: conf.c:4248:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:392:(snd_func_concat) error evaluating strings
[AO_ALSA] alsa-lib: conf.c:4248:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:1251:(snd_func_refer) error evaluating name
[AO_ALSA] alsa-lib: conf.c:4248:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
[AO_ALSA] alsa-lib: conf.c:4727:(snd_config_expand) Evaluate error: No such file or directory
[AO_ALSA] alsa-lib: pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM sysdefault
[AO_ALSA] Playback open error: No such file or directory
AO: [pulse] Init failed: Connection refused
[JACK] cannot open server
[AO SDL] Samplerate: 44100Hz Channels: Stereo Format s16le
[AO_ALSA] alsa-lib: confmisc.c:768:(parse_card) cannot find card '1'
[AO_ALSA] alsa-lib: conf.c:4248:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:392:(snd_func_concat) error evaluating strings
[AO_ALSA] alsa-lib: conf.c:4248:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:1251:(snd_func_refer) error evaluating name
[AO_ALSA] alsa-lib: conf.c:4248:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
[AO_ALSA] alsa-lib: conf.c:4727:(snd_config_expand) Evaluate error: No such file or directory
[AO_ALSA] alsa-lib: pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM sysdefault
[AO SDL] Unable to open audio: No available audio device
DVB card number must be between 1 and 4
AO: [null] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 0.1 (00.0) of 1567.0 (26:07.0) ??,?% [J
A: 0.1 (00.0) of 1567.0 (26:07.0) ??,?% [J
MPlayer interrupted by signal 2 in module: play_audio
A: 4.5 (04.5) of 315.0 (05:15.0) 1.7% [J
Exiting... (Quit)
mplayer starts within a tmux window but I don't get any sound and have to stop mplayer from within tmux with CTRL+C which ends the process.
interestingly when as user I run:
/usr/bin/tmux new-session -d -s mplayer 'mplayer -idle -input file=/systemdservice/mplayerfifo /systemdservice/1.mp3 &> /systemdservice/mplayererror.log'
it works perfectly.
If in mplayer.service I change the user to root it also works perfectly.
user is a member of audio group.
I am confused as to what is causing this problem which appears due to a limit of users audio group privilages when a process is started via systemd.
Any help appreciated.
Thanks in advance.
Last edited by epoynton (2013-10-30 21:44:43)

Have you tried setting the audio output driver for mplayer explicitly? See:
mplayer -ao help
I would try
-ao alsa
ALSA doesn't use /dev/dsp anymore I don't think. On a Pi you will also need to make sure the mixer is set with amixer like:
amixer cset #
You can use
aplay -l
to see the available device IDs etc.
Hope this helps.
Last edited by Minsc (2013-11-11 17:02:08)

Adding Silverlight-enabled WCF Service failed with error code 50

Hello everyone,
I am very new to Silverlight ,and I am working on silverlight with WCF.
When I tried to add a silverlight-enabled WCF service. I kept getting the error
Method failed with unexpected error code 50.
I am working with Silverlight 5 and VS 2013 ,I have no idea about it. I appreciate that if anyone can help?
Thank you

Hi,
Please make sure your wcf is valid.
Here are some resources which could help you:
https://msdn.microsoft.com/library/cc838234(VS.95).aspx
http://www.codeproject.com/Articles/262164/Using-WCF-Service-with-Silverlight#_articleTop
Best Regards,
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Failed boot after enabling devmon service with systemctl

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