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q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Please run in terminal:
$ ls -ld /run/user/1000
$ ls -l /run/user/1000
$ echo $XDG_RUNTIME_DIR
and post back the output

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Found a similar type of problen here: https://q4os.org/forum/viewtopic.php?id=2475

Last edited by FlexQ4 (2026-03-09 15:09)

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

->

~\> ls -ld /run/user/1000
drwx------ 7 me me 200  9. Mär 14:48 /run/user/1000
~\> ls -l /run/user/1000
insgesamt 4
srw-rw-rw- 1 me me   0  9. Mär 14:48 bus
drwx------ 3 me me  60  9. Mär 14:48 dbus-1
drwx------ 2 me me  60  9. Mär 14:48 dconf
drwx------ 2 me me 140  9. Mär 14:48 gnupg
-rw------- 1 me me 185  9. Mär 14:48 ICEauthority
srw-rw-rw- 1 me me   0  9. Mär 14:48 pk-debconf-socket
drwx------ 2 me me  80  9. Mär 14:48 pulse
drwxr-xr-x 5 me me 140  9. Mär 14:48 systemd
~\> echo $XDG_RUNTIME_DIR
/run/user/1000

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

After you have edited your post #25, the messages are correct. Is it possible your disk turns read only and revert back after reboot ?

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

No, i don't think so - the DCOP error persists, not possible to rebuil tdesyscoca:

~\> tdebuildsycoca
[tdebuildsycoca] tdebuildsycoca running...
[2026/03/09 15:09:56.751] [tdebuildsycoca] Reusing existing tdesycoca.
~\> sudo tdebuildsycoca
[tdebuildsycoca] Warning: tdebuildsycoca is unable to register with DCOP.
[tdebuildsycoca] tdebuildsycoca running...
[tdebuildsycoca] tdebuildsycoca running...
[2026/03/09 15:10:14.281] [tdebuildsycoca] Reusing existing tdesycoca.

as well as the sound-notification issue.

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

No, i don't think so - the DCOP error persists, not possible to rebuil tdesyscoca:

~\> tdebuildsycoca
[tdebuildsycoca] tdebuildsycoca running...
[2026/03/09 15:09:56.751] [tdebuildsycoca] Reusing existing tdesycoca.
~\> sudo tdebuildsycoca
[tdebuildsycoca] Warning: tdebuildsycoca is unable to register with DCOP.
[tdebuildsycoca] tdebuildsycoca running...
[tdebuildsycoca] tdebuildsycoca running...
[2026/03/09 15:10:14.281] [tdebuildsycoca] Reusing existing tdesycoca.

We don't see any error, tdesyscoca appears to have been built correctly. The warning is quite normal at the first run as there are no DCOP server running for root. As you run the command once again, it will get off.

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

So i went to /opt/trinity/share/sounds again and observed, that the ogg-files have an 'empty' file icon (withaout a loudspeaker, like the wav) - See the first two snapshots attached.

Thought: maybe here's something missing and decided to add the 'missing' ogg filetype 'Ogg File' selected the appropriate icon, and 'artsplay' as application.

That was a mistake! Now booting up, it is waiting first several seconds at the (5th) Desktop Icon, and then com several error massage boxes "Sorry - KDesktop: Could not find mimetype  application octet-strem'
These messages do occur also subsequently opening konqueror or any other k-app (see snaphot 3).

It's not possible to start (double-click) the 'Control Panel' any more, even worse: it crahes (-> snapshot 4).
However, i can start 'tdecmshell kcmnotify' from the console.

Ok, max of uploades reached, i'll start a new post...

Last edited by FlexQ4 (2026-03-10 14:37)

---

Attachments:
mime-type_ogg1.png, Size: 37.46 KiB, Downloads: 34
mime-type_ogg2.png, Size: 80.96 KiB, Downloads: 17
mime-type_octet.png, Size: 4.16 KiB, Downloads: 22

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

I would like to mention, that every other non-k app is still workin withot any issue.

Long story short: Is it possible to
A)  reset TDE's mime-database,  or
B)  copy/transfer it from a fine (backup) installation/disk,  or
C)  correct it manually

Thank you!

Edit: or maybe i should go to https://www.trinitydesktop.org/ and ask there?

Edit2: Added a last snaphot.

Last edited by FlexQ4 (2026-03-10 15:11)

---

Attachments:
mime-type_ogg3.png, Size: 68.96 KiB, Downloads: 25
mime-type_ogg.png, Size: 47.2 KiB, Downloads: 24

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Important update:
Found the solution here: https://wiki.trinitydesktop.org/Tips_And_Tricks  in the last paragraph:
"Unable to find mime type application/octet-stream": This error can occur due to a known bug with the TDE MIME system.
i utilized Method 1 to get rid of all errors and issues.

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

So did you actually find the ultimate fix for the OP ?

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Yes, ALL errors were fixed after adding the "octet-stream" mime (via 'tdecmshell filetypes')!

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Thanks for valuable reporting and sharing the solution

The main question is, what action has the issue triggered.

Last edited by q4osteam (2026-03-10 22:11)

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

The main question is, what action has the issue triggered.

I have absolutely no clue. Since my sound system isn't allways on, and there was no general sound issue at all, i can't even say when it happened.

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Would you please run commands and post the output:
$ cat $HOME/.trinity/share/mimelnk/application/q4os-octet-stream.desktop
$ cat $HOME/.trinity/share/mimelnk/application/octet-stream.desktop

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

~\> cat $HOME/.trinity/share/mimelnk/application/q4os-octet-stream.desktop
[Desktop Entry]
Comment=Ogg File
Hidden=true
Icon=audio-x-generic
MimeType=application/x-kdeuser2
OnlyShowIn=TDE;
Patterns=*.ogg;*.OGG
Type=MimeType
X-Ubuntu-Gettext-Domain=desktop_tdelibs-trinity

~\> cat $HOME/.trinity/share/mimelnk/application/octet-stream.desktop
[Desktop Entry]
Comment=
Hidden=false
Icon=
MimeType=application/octet-stream
Patterns=
Type=MimeType

The 'ogg' patterns in the first (q4os-octet-stream.desktop) seem somewhat strange?

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

The 'ogg' patterns in the first (q4os-octet-stream.desktop) seem somewhat strange?

Yes, it's not the original file intended to depreciate the "octet-stream" bug, so something had to rewrite this file. The original you will find in:

/usr/share/apps/q4os_system/share/q4os_home.tar.gz/.trinity/share/mimelnk/application/q4os-octet-stream.desktop

What happens, if you delete your fix "$HOME/.trinity/share/mimelnk/application/octet-stream.desktop", and rewrite q4os-octet-stream.desktop back with its original, so it should be:

[Desktop Entry]
#defines mime type, the same as /usr/share/mime/packages/*.desktop
#override the default trinity octet-stream mimetype
Comment=Unknown
#Icon=
MimeType=application/octet-stream
#X-TDE-PatternsAccuracy=0
#Patterns=
Type=MimeType
OnlyShowIn=TDE;
X-Ubuntu-Gettext-Domain=desktop_tdelibs-trinity

Last edited by q4osteam (2026-03-11 12:50)

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

The original you will find in:

/usr/share/apps/q4os_system/share/q4os_home.tar.gz/.trinity/share/mimelnk/application/q4os-octet-stream.desktop

The original looks a bit different here: Not possible to copy&paste from ark-preview, so please see screenshot.
I will now save the current q4os-octet-stream.desktop and unpack the original from q4os_home.tar.gz.
Just a minute...

Edit: That results in the original ogg-Sound issue!!
Now i' try the version that you postet above:

[Desktop Entry]
#defines mime type, the same as /usr/share/mime/packages/*.desktop
#override the default trinity octet-stream mimetype
Comment=Unknown
#Icon=
MimeType=application/octet-stream
#X-TDE-PatternsAccuracy=0
#Patterns=
Type=MimeType
OnlyShowIn=TDE;
X-Ubuntu-Gettext-Domain=desktop_tdelibs-trinity

Just a minute please...

No, the original ,No ogg-Sound in TDE' issu remains also with your version. Only the weird "octet-stream - ogg" crossover version i posted above seems to work here.

Hopefully that's no breeding ground for other strange effects in the future ;-)
Anyway, i will add a new Q4OS on my disk(s) at the end of this year, when Gemini's support ends (not yet sure, whether it will be Q4OS 5,6 or 7 then)...

Last edited by FlexQ4 (2026-03-11 14:32)

---

Attachments:
mime-octet.png, Size: 39.03 KiB, Downloads: 30

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

We are now confused about what works and what doesn’t. Could you please post a few combinations here along with results ?

1.
q4os-octet-stream.desktop / A
octet-stream.desktop - present
result: ??

2.
q4os-octet-stream.desktop / A
octet-stream.desktop - deleted
result: ??

3.
q4os-octet-stream.desktop / B
octet-stream.desktop - present
result: ??

4.
q4os-octet-stream.desktop / B
octet-stream.desktop - deleted
result: ??

q4os-octet-stream.desktop / A ... weird version with .ogg reference inside
q4os-octet-stream.desktop / B ... original version extracted from the tgz archive

Don't forget re-login between the tests.

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Regarding ~/.trinity/share/mimelnk/application/q4os-octet-stream.desktop:

1) The ,crossover' version which i have/had:

[Desktop Entry]
Comment=Ogg File
Hidden=true
Icon=audio-x-generic
MimeType=application/x-kdeuser2
OnlyShowIn=TDE;
Patterns=*.ogg;*.OGG
Type=MimeType
X-Ubuntu-Gettext-Domain=desktop_tdelibs-trinity

-> Works!

2) the ,origial' version of  /usr/share/apps/q4os_system/share/q4os_home.tar.gz (date: 10.10.2001):

[Desktop Entry]
Comment=Unknown
Hidden=false
#Icon=
MimeType=application/octet-stream
#Patterns=
Type=MimeType
X-Ubuntu-Gettext-Domain=desktop_tdelibs-trinity
OnlyShowIn=TDE;

-> The ogg-issue in TDE is back!

3) The version which you posted in #41 - which differes slightly from the version in q4os_home.tar.gz:

[Desktop Entry]
#defines mime type, the same as /usr/share/mime/packages/*.desktop
#override the default trinity octet-stream mimetype
Comment=Unknown
#Icon=
MimeType=application/octet-stream
#X-TDE-PatternsAccuracy=0
#Patterns=
Type=MimeType
OnlyShowIn=TDE;
X-Ubuntu-Gettext-Domain=desktop_tdelibs-trinity

-> The ogg-issue in TDE is still there!

4) Reverted back to 1) -> It's working fine again!

Each time i changed q4os-octet-stream.desktop, i rebooted!!

Last edited by FlexQ4 (2026-03-11 16:03)

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Well, did you have “octet-stream.desktop” - the fix you previously added - present or deleted during all the tests ?

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

it was allways present - i missed the hint to delete it in your post. Just a minute...

I can confirm: deleting (well, renaming~) octet-stream.desktop, and with the original q4os-octet-stream.desktop (from /q4os_home.tar.gz) it does work (too)!

And since it looks much better for me than the quirky 'mixture octet-stream+ogg' crossover version,
i'll leave it that way! Many Thanks!!

Last edited by FlexQ4 (2026-03-11 16:44)

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

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Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Perfect. If you would get any new info about how "q4os-octet-stream.desktop" might have changed, do not hesitate to post here.

Another odd thing is that your "/usr/share/apps/q4os_system/share/q4os_home.tar.gz" file is not the current one as it should be. Do you have your system up to date ?

Run:
$ md5sum /usr/share/apps/q4os_system/share/q4os_home.tar.gz
$ dpkg -S q4os_home.tar.gz
and post back.

Last edited by q4osteam (2026-03-11 17:18)

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

here the results:

~\> dpkg -S q4os_home.tar.gz
q4os-base: /usr/share/apps/q4os_system/share/q4os_home.tar.gz
~\> md5sum /usr/share/apps/q4os_system/share/q4os_home.tar.gz
d39f0ed8383121ae00b0a3e91a52d320  /usr/share/apps/q4os_system/share/q4os_home.tar.gz

The system was built with Version 4.12 (kernel 5.10.0-22) and updated to 5.10.0-28 during installation.

q4osteam

Q4OS Team

Registered: 2015-12-06

Posts: 6,093

Website

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

Checksum for the current, full updated file should be:

2d607a4d06d36e1ed571327e0a9c1755  /usr/share/apps/q4os_system/share/q4os_home.tar.gz

Please run and post back:
$ apt policy q4os-base

Update system:
$ sudo apt update
$ sudo apt full-upgrade

And then check the checksum again:
$ md5sum /usr/share/apps/q4os_system/share/q4os_home.tar.gz

Last edited by q4osteam (2026-03-11 21:36)

FlexQ4

Member

Registered: 2017-02-19

Posts: 258

Re: Q4OS TDE: acoustic (ogg) System Notifications fail

~\> get-q4os-version
4.12.1-n1
~\> apt policy q4os-base
q4os-base:
  Installiert:           4.19.1-a1
  Installationskandidat: 4.28.2-a2
  Versionstabelle:
     4.28.2-a2 501
        501 http://q4os.org/q4repo q4os-4-0-cn/main amd64 Packages
 *** 4.19.1-a1 100
        100 /var/lib/dpkg/status

I've had bad experiences upgrading system to kernels 5.10.0-33 (osprober didn't find Windows to boot in) and 5.10.0-37 (with 1000s of © on the screen and buzzing from the grafics).
So , the "apt full-upgrade" i'll firstly try only on a virtual- or test installation (at the next weekend)!!