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Tested the different desktops for the following. Results may not be 100% accurate. YMMV.
Power: shutdown/reboot tested, suspend button active, not tested
USB: mount/unmount removable thumb drive
pkexec: gparted/synaptic from menu and gparted-pkexec/synaptic-pkexec in terminal
In all cases, libpolkit-gobject-1-0-systemd came with the default install. It was replaced with either the -consolekit or -elogind variant.
EDIT: re-tested mate, and usb automount/unmount works with consolekit.
D.E. Power USB pkexec
XFCE
w. ck + + -
w. elogind + + -
Mate
w. ck + + + (with lib'g'ck)
w. elogind + + +
LXDE
ck+lxpolkit + + (popup) -
ck only + - -
w. elogind + + (pcmanfm) -
Cinnamon
w. lib'g'sd + + -
w. elogind + + + (synaptic only)
KDE (no autologin with lightdm?)
w. lib'g'sd + + -
w. elogind + + +
LXQT
w. lib'g'sd + + -
w. elogind + + +
Good observation. Most of the repository is empty. You will only find packages that were changed by devuan in the devuan repositories. The packages will be in /pool, but you must be sure to get the right version.The way amprolla works is to merge the debian repos with the devuan repos and serve you the correct packages for your system.
If you want to download any packages in devuan:
apt-get download <package>
or
aptitude download <package>If you want to download from the web, use a devuan repo url for packages that have been modified by devuan and go to packages.debian.org for packages we have not modified. DO NOT ERR! (It's safer to use the package manager to get the packages.)
I believe someone is working on a web interface for searching files, but I don't know the current status.
In xfce installed from desktop-live, shutdown buttons work and usb mounting works in all combinations of consolekit/elogind and slim/lightdm, but no combination gives me the ability to start gparted or synaptic from the menu or from terminal as gparted-pkexec or synaptic-pkexec.
I've seen the same problem in stretch. And I've also noticed that the problem doesn't exist if your user is in the sudo group. (I think that last feature is built into pam.)
I think the libpolkit packages you get depend on which desktop and login manager you install. In some cases, libpolkit-backend-1-0-consolekit is needed instead of the elogind backend. There may be more changes planned for that mess.
The libsystemd0 dependency issue is well known. It would be nice to get rid of it, but it's in more and more packages with each release. And it does nothing if systemd isn't present and running. And systemd is not present and cannot be installed from devuan repositories.
desktop-live amd64 is missing the grub-pc-bin package. To install on bios hardware, you'll need a network connection, so you can install the grub-pc package before you run the installer. Don't let the package install the bootloader at this time. Wait until you run the installer so that grub will be installed to the hard drive correctly.
apt-get update
apt-get install grub-pcDecline to install the bootloader.
Then you can install the system to hard drive.
For uefi install, just run the installer. You already have the right grub.
@bones:
Wired or wireless?
Traditional interface names like eth0 or wlan0, or "predictable" interface names (which I can't predict until I open up your computer and look inside)? Check the preferences in wicd and make sure they match the interface names shown by ifconfig or ip a.
I installed lxde yesterday and was getting the same error (No session for pid#). The pid is always for lxpolkit. Removing lxpolkit solved it for me. Shutdown buttons were working before and after removing lxpolkit.
I also experimented with running 'pam-auth-update' to alternately disable elogind or consolekit, and it seems to be working normally with either one.
Here's a list of the kits that were installed.
user@devuan:~$ dpkg -l | grep consolekit
ii consolekit 0.4.6-6 amd64 framework for defining and tracking users, sessions and seats
ii libpolkit-backend-1-0-consolekit:amd64 0.105-18+devuan2.4 amd64 PolicyKit backend API
user@devuan:~$ dpkg -l | grep policykit
ii lxqt-policykit 0.11.1-1 amd64 LXQt authentication agent for PolicyKit
ii lxqt-policykit-l10n 0.11.2-1 all Language package for lxqt-policykit
ii policykit-1 0.105-18+devuan2.4 amd64 framework for managing administrative policies and privileges
ii policykit-1-gnome 0.105-6 amd64 authentication agent for PolicyKit
user@devuan:~$ dpkg -l | grep elogind
ii elogind 234.4-1+devuan1.5 amd64 user, seat and session management daemon
ii libelogind0:amd64 234.4-1+devuan1.5 amd64 user, seat and session management library
ii libpam-elogind:amd64 234.4-1+devuan1.5 amd64 elogind PAM module
user@devuan:~$ dpkg -l |grep polkit
ii libpolkit-agent-1-0:amd64 0.105-18+devuan2.4 amd64 PolicyKit Authentication Agent API
ii libpolkit-backend-1-0-consolekit:amd64 0.105-18+devuan2.4 amd64 PolicyKit backend API
ii libpolkit-gobject-1-0-systemd:amd64 0.105-18+devuan2.4 amd64 PolicyKit Authorization API
ii libpolkit-qt5-1-1:amd64 0.112.0-5 amd64 PolicyKit-qt5-1 library
rc lxpolkit 0.5.3-2 amd64 LXDE PolicyKit authentication agent(Edited to add 'dpkg -l |grep polkit')
Edit2: I added
libpolkit-backend-1-0-elogind (0.105-18+devuan2.4)
libpolkit-gobject-1-0-elogind (0.105-18+devuan2.4)
That removed libpolkit-backend-1-0-consolekit and libpolkit-gobject-1-0-systemd. I had to run 'pam-auth-update' and enable elogind to get shutdown buttons working again.
At the boot menu, press either TAB or e to be able to edit the boot command and add whatever extra options you want. If you're booting bios hardware, you'll get an isolinux boot menu, and you use TAB to edit the command. If you're booting uefi, you'll get a grub menu, and you press e to edit the menu and add the option to the line that starts with 'linux'.
Run 'pam-auth-update' to enable elogind and disable consolekit.
Install: libpolkit-backend-1-0-elogind libpolkit-gobject-1-0-elogind
Log out/in
I've got xfce with lightdm working with elogind on one install this way. Other install is more elusive.
FWIW, there's a newer version of desktop-base (2.0.2) in ascii-proposed that supports lightdm (you'll get the purpy background on the login screen). Not sure why you'd want d-b for miyo unless you want devuan theming or you're hacking the alternatives system to add miyo theme.
To stop the elogind service, open your terminal, and enter...
sudo pam-auth-update
Cool! I didn't know about that. I tried it, and just to be different I disabled consolekit instead of elogind, and after a logout/login, I can shutdown and reboot again. Tested with lightdm and lxdm. (slim wasn't affected by the problem)
CORRECTION: Disabling consolekit works with lxdm only, not with lightdm.
arjan, does it eventually shut down, or does it hang forever? I get about a 30-second delay during shutdown. It's a known problem. I don't know if there's a fix.
https://bugs.debian.org/cgi-bin/bugrepo … bug=792552
Someone on that thread also mentioned this one:
https://bugs.debian.org/cgi-bin/bugrepo … bug=791944
Looks like it's built into the kernel these days. (see below)
https://www.kernel.org/doc/Documentatio … ernors.txt
You can still use cpufrequtils to modify the settings, but according to the debian wiki, cpufrequtils is being replaced by cpupower. There's a linux-cpupower package in jessie-backports, ascii/stretch and later.
:~$ grep FREQ /boot/config-3.16.0-5-amd64
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_COMMON=y
CONFIG_CPU_FREQ_STAT=m
# CONFIG_CPU_FREQ_STAT_DETAILS is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=m
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
CONFIG_X86_PCC_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ_CPB=y
CONFIG_X86_AMD_FREQ_SENSITIVITY=m
# CONFIG_PM_DEVFREQ is not setI don't understand what this is supposed to do.
tor-resolve devuanfwojg73k6r.onion
Feb 06 10:16:17.483 [warn] Got SOCKS5 status response '4': host is unreachable
Feb 06 10:16:17.483 [warn] devuanfwojg73k6r.onion is a hidden service; those don't have IP addresses. You can use the AutomapHostsOnResolve option to have Tor return a fake address for hidden services. Or you can have your application send the address to Tor directly; we recommend an application that uses SOCKS 5 with hostnames.I can confirm that tor and tor+http give the same results.
root@ascii:/home/user# apt-get update
Get:1 tor+http://devuanfwojg73k6r.onion/merged ascii InRelease [22.2 kB]
Get:2 tor+http://devuanfwojg73k6r.onion/merged ascii-updates InRelease [22.2 kB]
Get:3 tor+http://devuanfwojg73k6r.onion/merged ascii-security InRelease [21.6 kB]
Get:4 tor+http://devuanfwojg73k6r.onion/merged ascii/main amd64 Packages [7,232 kB]
Get:5 tor+http://devuanfwojg73k6r.onion/merged ascii-security/main amd64 Packages [246 kB]
Fetched 7,545 kB in 3min 37s (34.7 kB/s)
Reading package lists... Done
root@ascii:/home/user# aptitude -s full-upgrade
The following packages will be upgraded:
chromium p7zip p7zip-full
The following packages are RECOMMENDED but will NOT be installed:
fonts-liberation
3 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 47.0 MB of archives. After unpacking 657 kB will be used.
Note: Using 'Simulate' mode.
Do you want to continue? [Y/n/?] n
Abort.
root@ascii:/home/user# apt-get update
Hit:1 tor://devuanfwojg73k6r.onion/merged ascii InRelease
Hit:2 tor://devuanfwojg73k6r.onion/merged ascii-updates InRelease
Hit:3 tor://devuanfwojg73k6r.onion/merged ascii-security InRelease
Reading package lists... Done
root@ascii:/home/user# aptitude -s full-upgrade
The following packages will be upgraded:
chromium p7zip p7zip-full
The following packages are RECOMMENDED but will NOT be installed:
fonts-liberation
3 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 47.0 MB of archives. After unpacking 657 kB will be used.
Note: Using 'Simulate' mode.
Do you want to continue? [Y/n/?] n
Abort.The question remains. Is and has the onion address of the repository been forwarded to pkgmaster as announced by golinux and katolaz or is it (and has been in the recent past and ever since the announcement of pkgmaster) another repository with supposedly the same content? This is a question that is not personal in anyway but relevant to anyone wishing to try devuan.
I don't know how you could have asked that more clearly than you did, so I don't understand the response. I don't have an official answer, but I'll tell you what I know.
On October 20, I posted an announcement saying that amprolla3 was up and running at pkgmaster.devuan.org.
https://dev1galaxy.org/viewtopic.php?pid=5669#p5669
I don't know when the onion address became active. If it was around months before pkgmaster, then it would have pointed to packages.devuan.org, same as auto.mirror.devuan.org does. And I seem to recall that there were some differences between the two at first. That got fixed. I only know that last week when I asked, the onion address was pointing to pkgmaster.
I doubt that anyone remembers exactly when they this or that, and it's even less likely that 'they will take the time to look it up. They're too busy fixing things.
Where is suse installed, and what does the grub.cfg entry for suse look like? Did you try what I suggested in my last post on that other thread? (i.e. try booting suse from grub command-line.)
Ryzen needs kernel 4.10 or newer. You can get 4.14 from ascii-backports. But I'm confused about what you actually did. Did you upgrade your cpu on an existing installation?
I agree that it would be helpful to have synaptic installed by default. From there, you can add whatever else you need without having to go to command line. If you want that whole list included, then what you're really asking for is a DVD, not a CD. All of that will not fit on a CD. Firefox-esr is on the CD and so is firmware. You can install those pretty easily. Mount your usb to /media/cdrom so that apt can find it. Then apt-get install firefox-esr firmware-<whatever>
Of course, if you use a third-party, unsupported usb writer, you're on your own. I don't know what rufus does. Since it uses fat32, I assume it works somewhat like refracta2usb, which you also could use to make the installer usb, and with which you would also have run into serious problems.
The recommended method is to use dd, cp or cat to image the usb. If that didn't work for you, it might make sense to figure out why and correct the situation. And if you do it that way, you will see the nice purple grub background when you boot the installer.
But I will say that your timing is good. Installer isos for ascii are coming soon, and we can look at the package selection for the CD and make some changes (I hope.) I had not looked at the package list for the CD in many months, and I forgot that synaptic is not on the CD at all.
Extlinux (syslinux) works well and is easy to configure. I posted a howto in the Documentation section a few months ago. It's easy to switch back and forth between extlinux and grub, in case you try it and don't like it.
One more thing - it would be better if you did not ask the same questions in multiple threads. Now the information is scattered all over the forum.
Well, I got it to work last night with some help from Blinkdog. I had to drop the s from https. This works:
deb http://pkgmaster.devuan.org/mergedIt works with jessie and with ascii., In ascii, I compared it to using the https repo (non-tor) and they both wanted to upgrade the same packages. I will keep an eye on it.
Cynwulf, Fungus asked me to let you know that he is unable to reply at this time.
The default network manager is wicd.
If you want a complete desktop, and you don't want to use a network mirror, use the DVD instead of the CD, and you won't be missing so much.
What's the full name of the iso you used?
The firmware directory contains symbolic links so that they are easily found and at the same time are in their proper place in pool without having two copies on the media.
Virtualbox is in the jessie repo. You need to add contrib to your sources.
Mugshot is in the repo.
I didn't check the others you were looking for.
The warning about the physical boundary should not be a problem. But I think you should be using grub-pc (grub2). I don't think grub-legacy can handle ext4 partitions.
Cool! We're almost there.
Here's my quick summary of the situation.
- You can boot from the mint grub if you specify root=uuid.
- The resume file contains a valid uuid for your swap partition, and boot isn't hanging with a message about not being able to find some uuid that doesn't exist.
- We don't know Who's on first base.
What I would do first is boot into devuan the way you did.
- Run 'fdisk -l' to see if devuan is on /dev/sdd1 today. If it is, run
grub-install /dev/sddand if it's not on sdd, then use whatever it's calling itself. (whole drive, not partition)
- Reboot and press whatever key gets you the boot device menu. Might be F8 or F12, might be ESC or something else. It should tell you on screen before you get to the grub menu. When you get there, choose the drive with devuan on it. That will temporarily make it the first drive, and you should get to devuan's grub menu. Boot the first option (Devuan) to make sure it really works.
This should all work perfectly, and it will show you that devuan can boot itself from the first hard disk.
Next step - I give you special powers to turn you into a super-gnuru.
Reboot, do not go to the boot device menu. Just go to the mint grub menu.
Press "c"
You will get a prompt that says: grub>
Type the following, and then press TAB a couple of times.
set root=(hd0You'll get a list of partitions. You should be able to figure out which disk grub is calling hd0.
Erase the 0 and replace it with 1. Press TAB a couple of times. Repeat with 2 and 3.
Once you figure out what mint's grub wants to call the disk with devuan on it, enter the following commands. We expect it to be (hd3,msdos1) but it probably won't be. I'll just use that for the example, but you should use what you find.
set root=(hd3,msdos1)
linux /vmlinuz ro root=/dev/sdd1 #change this to wherever it is according to the previous command.
initrd /initrd.img
bootIt should boot into devuan.
If you want a menu entry for devuan in the mint boot menu (one that works, I mean) you can create a custom one.
Boot mint.
Edit /etc/grub.d/40_custom and add
menuentry 'Devuan on sdd1' {
set root=(hd3,msdos1) # or wherever it is
linux /vmlinuz ro root=/dev/sdd1 # or use the root=uuid here
initrd /initrd.img
}Save the file and run update-grub. It will be added to mint's boot menu.
That's all.
As I understand it, the thing that prevents you from installing rogue packages is the signing key. It shouldn't matter if the package comes in an envelope or on a postcard. The key has to fit.
Https will prevent your ISP, government and other snoops from knowing what packages you install.
Tor will prevent them from even knowing that you're connecting to a devuan server and also prevent the devuan server from knowing where you are.
Anyway, here are some test results.
Plain http:
deb http://pkgmaster.devuan.org/merged ascii main
deb http://pkgmaster.devuan.org/merged ascii-updates main
deb http://pkgmaster.devuan.org/merged ascii-security mainapt-get dist-upgrade
Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
The following packages were automatically installed and are no longer required:
libseccomp2 tor tor-geoipdb torsocks
Use 'apt autoremove' to remove them.
The following packages will be upgraded:
curl dbus dbus-x11 firefox-esr libcolord2 libcurl3 libcurl3-gnutls
libdbus-1-3 libdns-export162 libisc-export160 libpoppler-qt5-1 libpoppler64
poppler-utils refractainstaller-base tasksel tasksel-data
16 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.Installed apt-transport-https and edited sources.list:
deb https://pkgmaster.devuan.org/merged ascii main
deb https://pkgmaster.devuan.org/merged ascii-updates main
deb https://pkgmaster.devuan.org/merged ascii-security mainapt-get update
apt-get dist-upgrade
Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
The following packages were automatically installed and are no longer required:
libseccomp2 tor tor-geoipdb torsocks
Use 'apt autoremove' to remove them.
The following packages will be upgraded:
curl dbus dbus-x11 firefox-esr libcolord2 libcurl3 libcurl3-gnutls
libdbus-1-3 libdns-export162 libisc-export160 libpoppler-qt5-1 libpoppler64
poppler-utils refractainstaller-base tasksel tasksel-data
16 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.I tee'd the output of both commands above to files and ran a diff on the files. They were identical.
Installed apt-transport-tor and edited sources.list:
deb tor+https://devuanfwojg73k6r.onion/merged ascii main
deb tor+https://devuanfwojg73k6r.onion/merged ascii-updates main
deb tor+https://devuanfwojg73k6r.onion/merged ascii-security mainapt-get update
Err:1 tor+https://devuanfwojg73k6r.onion/merged ascii InRelease
Can't complete SOCKS5 connection to 0.0.0.0:0. (5)
Err:2 tor+https://devuanfwojg73k6r.onion/merged ascii-updates InRelease
Can't complete SOCKS5 connection to 0.0.0.0:0. (1)
Err:3 tor+https://devuanfwojg73k6r.onion/merged ascii-security InRelease
Can't complete SOCKS5 connection to 0.0.0.0:0. (5)
Reading package lists... Done
W: Failed to fetch tor+https://devuanfwojg73k6r.onion/merged/dists/ascii/InRelease Can't complete SOCKS5 connection to 0.0.0.0:0. (5)
W: Failed to fetch tor+https://devuanfwojg73k6r.onion/merged/dists/ascii-updates/InRelease Can't complete SOCKS5 connection to 0.0.0.0:0. (1)
W: Failed to fetch tor+https://devuanfwojg73k6r.onion/merged/dists/ascii-security/InRelease Can't complete SOCKS5 connection to 0.0.0.0:0. (5)
W: Some index files failed to download. They have been ignored, or old ones used instead.I guess I did that wrong.
root@testascii:/home/user# torsocks --shell
/usr/bin/torsocks: New torified shell coming right up...
root@testascii:/home/user# apt-get update
0% [Working]1517069573 WARNING torsocks[7635]: [connect] Connection to a local address are denied since it might be a TCP DNS query to a local DNS server. Rejecting it for safety reasons. (in tsocks_connect() at connect.c:192)
Err:1 tor+https://devuanfwojg73k6r.onion/merged ascii InRelease
FailReason: ConnectionRefused
0% [Working]1517069573 WARNING torsocks[7635]: [connect] Connection to a local address are denied since it might be a TCP DNS query to a local DNS server. Rejecting it for safety reasons. (in tsocks_connect() at connect.c:192)
Err:2 tor+https://devuanfwojg73k6r.onion/merged ascii-updates InRelease
FailReason: ConnectionRefused
0% [Working]1517069573 WARNING torsocks[7635]: [connect] Connection to a local address are denied since it might be a TCP DNS query to a local DNS server. Rejecting it for safety reasons. (in tsocks_connect() at connect.c:192)
Err:3 tor+https://devuanfwojg73k6r.onion/merged ascii-security InRelease
FailReason: ConnectionRefused
Reading package lists... Done
W: Failed to fetch tor+https://devuanfwojg73k6r.onion/merged/dists/ascii/InRelease FailReason: ConnectionRefused
W: Failed to fetch tor+https://devuanfwojg73k6r.onion/merged/dists/ascii-updates/InRelease FailReason: ConnectionRefused
W: Failed to fetch tor+https://devuanfwojg73k6r.onion/merged/dists/ascii-security/InRelease FailReason: ConnectionRefused
W: Some index files failed to download. They have been ignored, or old ones used instead.That didn't work, either. What am I doing wrong?
Welcome to grub hell. GRUB and the kernel don't always agree on what is the first disk.I need to reply a few posts back before I even think about your last post.
cat /conf/conf.d/resume would give the error you got. Are you sure you didn't use a leading slash?
If you're in the extracted directory, cat conf/conf.d/resume should output the same line that's in /etc/initramfs-tools/resume and that should be your swap partition's uuid. It gets used when you return from hibernation to disk.
OK, back to the immediate problem. Do you change the order of the disks when you boot the diffrerent systems? That could be done by going into the bios and changing the hard disk order or by calling up the boot device menu and selecting different disks before the grub menu comes up.
Are you booting from usb on any of these occasions? GRUB will probably see the usb as hd0 when you do, and all the internal disks get bumped up one number.
As I understand it, right now you are using mint's grub to boot devuan. If you want to get rid of mint, you'll need to use devuan's grub to boot. Are you going to change the order of the hard disks when you do?
I'm posting this now, before I tell you to do something wrong.
Greenjeans, yes your changes will make the cut, but they are at the bottom of the list. I haven't even started on the new gui scripts. Still working on cli refractainstaller. The new version (9.3.3-1 I think) is in the ascii repo, and it fixes a couple of bugs. If you're already using 9.3.3 downloaded from sourceforge, you have those fixes already. (especially the one that let you finish the install without choosing a place for the bootloader.)
There's a newer version in the works, but I moved so much stuff around, it needs a lot of testing. It's also getting translated to German. That one will allow gpt partition tables with bios boot. (i.e. it will remind you what special things you need to do to avoid grub failing without telling you those things.) I'll probably put it in a package soon so I can get some of you guys to test it.
Edit: This should be first. When you get to
'[ 9.003419] IPV6: ADDRCONF (NETDEV_CHANGE): eth0: link becomes ready"
Press ENTER to see if you get a command prompt, or press alt-F2 to see if you get a console login screen.
OK, that's the end of the edit. Original message is below.
-------
conf/conf.d/resume
To see what's inside resume, you'll need to extract the initrd. You can do this as ordinary user.
mkdir extracted
zcat /boot/initrd.img-3.16.0-4-amd64 | cpio -i
cat conf/conf.d/resumeIt might contain a reference to a wrong or non-existent partition.
If you change or remove that file to make a modified initrd, repack it (as user)
find . -print0 | cpio -0 -H newc -o | gzip -c > ../custom-initrdYou'll have a file named custom-initrd in the directory above extracted.
Then make a backup copy of the existing initrd and copy the new one into place. (su to root or use sudo)
cp /boot/initrd.img-3.16.0-4-amd64 /boot/initrd.img-3.16.0-4-amd64.bak
cp ../custom-initrd /boot/initrd.img-3.16.0-4-amd64Cross fingers and reboot.
Pulseaudio probably works as well with TDE as it does with anything else. Many people will tell you that it doesn't work anywhere. If you don't want to install pulseaudio, you can install apulse. The version in the experimental repo works in jessie. But before you do that, does sound work at all?
Add this line to /etc/apt/sources.list
deb http://auto.mirror.devuan.org/devuan experimental mainThen
apt-get update
apt-get -t experimental install apulse
apulse ./MuseScore-2.1-x86_64.AppImageWhen you're done, comment out the line for experimental (not really required, but it's a good idea) and then 'apt-get update' again.
MuseScore works with apulse on my jessie/xfce. (Pretty cool app. Thanks for mentioning it.) It also works with kde5 on ascii with pulseaudio with no configuration needed. It's been a long time since I've used kde, so I don't really remember much about the sound settings.