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max_sipos

Member

From: Ithaca, NY

Registered: 2004-10-31

Posts: 106

Website

Rosegarden startup problem

Hello,

I've installed rosegarden but I get this error when I start it up (I've activated jack from /etc/rc.d):

[root@planck rc.d]# rosegarden
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
kbuildsycoca running...
[root@planck rc.d]# Rosegarden 4-1.0.0beta_cvs - AlsaDriver - alsa-lib version 1.0.6

JackDriver::initialiseAudio - JACK sample rate = 48000Hz, buffer size = 1024
JackDriver::initialiseAudio - creating disk thread
JackDriver::initialiseAudio - found 2 JACK physical outputs
JackDriver::initialiseAudio - connecting from "rosegarden:master out L" to "alsa_pcm:playback_1"
JackDriver::initialiseAudio - connecting from "rosegarden:master out R" to "alsa_pcm:playback_2"
JackDriver::initialiseAudio - found 2 JACK physical inputs
JackDriver::initialiseAudio - connecting from "alsa_pcm:capture_1" to "rosegarden:record in 1 L"
JackDriver::initialiseAudio - connecting from "alsa_pcm:capture_2" to "rosegarden:record in 1 R"
JackDriver::initialiseAudio - initialised JACK audio subsystem
ALSA lib seq_hw.c:446:(snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory

[root@planck rc.d]# 
[root@planck rc.d]# killall rosegarden

When it says it can't open /dev/snd/seq it hangs and leaves a pretty picture of a rose garden which I have to killall in order to get rid of. When starting as user it doesn't even connect to JACK:

JackDriver::initialiseAudio - JACK server not running
ALSA lib seq_hw.c:446:(snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory

and still hangs.

I'm very grateful for any help.
Maksim

max_sipos

Member

From: Ithaca, NY

Registered: 2004-10-31

Posts: 106

Website

Re: Rosegarden startup problem

To reply myself: putting

alias /dev/snd/seq snd-seq

in modprobe.conf solved the problem, although the audio system only works when started as root.

Pajaro

Member

Registered: 2004-04-21

Posts: 884

Re: Rosegarden startup problem

I have rosegarden working as normal user

I solved the snd seq issue adding modprobe "snd_seq" in rc.conf

you'll need realtime-lsm in order to work as your maximal system capabilities and a preempt kernel like nitro or mm (dp's mm does not work with realtime-lsm, so I'll write him a post asking to add support for it).

To ensure that you can use audio ensure:
- that you use udev
- that your user is added to audio group

You'll also need rtc module to ensure that rosegarden follows the timeline correctly though the system gets overloaded.